Poulan Tiller MRT500 User Manual

OWNER'S MANUAL  
MODEL NO. MRT500  
5 HP 17 Inch  
Tiller  
Assembly  
Operation  
Maintenance  
Service and Adjustments  
Storage  
Troubleshooting  
Repair Parts  
For Parts and Service, contact our authorized distributor: call 1-800-849-1297  
For Technical Assistance: call 1-800-829-5886  
®
188795 08.19.03 TR  
PRINTED IN U.S.A.  
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CUSTOMER RESPONSIBILITIES  
PRODUCT SPECIFICATIONS  
Read and observe the safety rules.  
Follow a regular schedule in maintaining, caring for  
and using your tiller.  
Gasoline Capacity:  
3 Quarts (2.8L)  
Unleaded Regular  
Follow instructions underMaintenanceandStorage”  
sections of this Owner’s Manual.  
Oil (API-SF-SJ):  
(Capacity: 20 oz./0.6L)  
SAE 30 (Above 32°F/0°C)  
SAE 5w-30 (Below 32°F/0°C)  
Spark Plug :  
Champion RC12YC  
IMPORTANT: THIS UNIT IS EQUIPPED WITH AN INTERNAL  
COMBUSTION ENGINE AND SHOULD NOT BE USED ON  
OR NEAR ANY UNIMPROVED FOREST-COVERED, BRUSH-  
COVERED OR GRASS COVERED LAND UNLESS THE  
ENGINE'S EXHAUST SYSTEM IS EQUIPPED WITH A SPARK  
ARRESTER MEETING APPLICABLE LOCAL LAWS (IF ANY).  
IFASPARKARRESTERISUSED,ITSHOULDBEMAINTAINED  
IN EFFECTIVE WORKING ORDER BY THE OPERATOR.  
(Gap: .030"/0.76mm)  
CONGRATULATIONS on your purchase of a new tiller. It  
has been designed, engineered and manufactured to give  
you the best possible dependability and performance.  
Should you experience any problems you cannot easily  
remedy, please contact your nearest authorized service  
center. We have competent, well-trained technicians and  
the proper tools to service or repair this unit.  
IN THE STATE OF CALIFORNIA, A SPARK ARRESTER IS  
REQUIRED BY LAW (SECTION 4442 OF THE CALIFORNIA  
PUBLIC RESOURCES CODE). OTHER STATES MAY HAVE  
SIMILAR LAWS. FEDERAL LAWS APPLY ON FEDERAL  
LANDS. SEE YOUR AUTHORIZED SERVICE CENTER FOR  
SPARK ARRESTER.  
Please read and retain this manual. The instructions will  
enable you to assemble and maintain your tiller properly.  
Always observe the “SAFETY RULES”.  
TABLE OF CONTENTS  
SAFETY RULES ............................................................ 2  
CUSTOMER RESPONSIBILITIES................................. 3  
PRODUCT SPECIFICATIONS....................................... 3  
ASSEMBLY.................................................................4-6  
OPERATION .............................................................7-11  
MAINTENANCE SCHEDULE ...................................... 12  
MAINTENANCE .....................................................12-14  
SERVICE & ADJUSTMENTS .................................15-18  
STORAGE.................................................................... 19  
TROUBLESHOOTING ................................................. 20  
REPAIR PARTS-TILLER.........................................21-27  
WARRANTY................................................................. 28  
3
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ASSEMBLY  
Your new tiller has been assembled at the factory with the exception of those parts left unassembled for shipping purposes.  
To ensure safe and proper operation of your tiller, all parts and hardware you assemble must be tightened securely. Use  
the correct tools as necessary to insure proper tightness.  
TOOLS REQUIRED FOR ASSEMBLY  
A socket wrench set will make assembly easier. Standard  
wrench sizes are listed.  
FRONT  
(1) Utility knife  
(1) Tire pressure gauge  
(1) Pair of pliers  
(1) 9/16" wrench  
LEFT  
RIGHT  
OPERATOR’S POSITION (See Fig. 1)  
When right or left hand is mentioned in this manual, it  
means when you are in the operating position (standing  
behind tiller handles).  
OPERATOR’S  
POSITION  
FIG. 1  
CONTENTS OF HARDWARE PACK  
(1) Carriage Bolt  
3/8-16 UNC x 1 Grade 5  
(1) Center Locknut  
3/8-16 UNC  
(2) Handle Locks  
(1) Handle Lock Lever  
(1) Hairpin Clip  
(1) Flat Washer 13/32 x 1 x 11 Gauge  
(1) Pivot Bolt  
3/8-16 UNC Grade 5  
Extra Shear Pins & Clips  
4
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ASSEMBLY  
UNPACKING CARTON (See Fig. 2)  
Grasp handle assembly. Hold in “upposition. Be sure  
handle lock remains in gearcase notch. Slide handle  
assembly into position.  
CAUTION: Be careful of exposed  
staples when handling or disposing  
of cartoning material.  
HANDLE ASSEMBLY  
"UP" POSITION  
IMPORTANT:  
WHEN UNPACKING AND ASSEMBLING  
TILLER, BE CAREFUL NOT TO STRETCH OR KINK CABLES.  
While holding handle assembly, cut cable ties securing  
handle assembly to top frame. Let handle assembly  
rest on tiller.  
TIGHTEN HANDLE  
LOCK LEVER TO  
HOLD  
Remove top frame of carton.  
Slowly ease handle assembly up and place on top of  
carton.  
Cut down right hand front and right hand rear corners  
of carton, lay side carton wall down.  
Remove packing material from handle assembly.  
LOOSEN HANDLE  
LOCK LEVER TO  
MOVE  
FIG. 4  
HANDLE  
ASSEMBLY  
Rotatehandleassemblydown.Insertrearcarriagebolt  
first, with bolt head on L.H. side of tiller and loosely  
assemble locknut (See Fig. 5).  
Insert pivot bolt in front part of plate and tighten.  
Cut down remaining corners of carton and lay panels  
flat.  
Lower the handle assembly. Tighten nut on carriage  
bolt bolt so handle moves with some resistance. This  
will allow for easier adjustment.  
SHIFT ROD  
Place flat washer on threaded end of handle lock le-  
ver.  
Insert handle lock lever through handle base and  
gearcase. Screw in handle lock lever just enough to  
hold lever in place.  
Insert second handle lock (with teeth inward) in the  
slot of the handle base (just inside of washer).  
With handle assembly in lowest position, securely  
tighten handle lock lever by rotating clockwise. Leav-  
ing handle assembly in lowest position will make it  
easier to remove tiller from carton.  
FIG. 2  
INSTALL HANDLE (See Figs. 3, 4, and 5)  
Insert one handle lock (with teeth facing outward) in  
gearcase notch. (Apply grease on smooth side of  
handle lock to aid in keeping lock in place until handle  
assembly is lowered into position.)  
VIEWED FROM R.H. SIDE OF TILLER  
HANDLE ASSEMBLY  
FLAT  
WASHER  
HANDLE  
LOCK  
HANDLE  
LOCK  
LEVER  
GEARCASE  
SLOT  
GEARCASE NOTCH  
HANDLE LOCK  
REAR  
CARRIAGE  
BOLT  
PIVOT  
BOLT  
FIG. 3  
HANDLE BASE  
LOCKNUT  
FIG. 5  
5
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ASSEMBLY  
CONNECT SHIFT ROD (See Fig. 7)  
ATTACH CLUTCH CABLE (See Fig. 6)  
Insert end of shift rod farthest from bend into hole of  
shift lever indicator.  
Hook end of clutch cable through hole in control bar  
bracket.  
Insert hairpin clip through hole of shift rod to secure.  
SHIFT  
HAIRPIN  
CLIP  
END OF  
CLUTCH CABLE  
CONTROL BAR  
BRACKET  
SHIFT  
ROD  
LEVER  
INDICATOR  
CONTROL BAR  
BRACKET  
CONTROL  
BAR  
FIG. 7  
REMOVE TILLER FROM CRATE  
Make sure shift lever indicator is in “N” position (See  
Fig. 7)  
Tilt tiller forward by lifting handle. Separate cardboard  
cover from leveling shield.  
Rotate tiller handle to the right and pull tiller out of  
carton.  
CLUTCH  
CABLE  
FIG. 6  
CHECK TIRE PRESSURE  
The tires on your unit were overinflated at the factory for  
shipping purposes. Correct and equal tire pressure is im-  
portant for best tilling performance.  
Reduce tire pressure to 20 PSI (1.4 kg/cm2).  
HANDLE HEIGHT  
Handle height may be adjusted to better suit operator.  
(See “TO ADJUST HANDLE HEIGHT” in the Service  
and Adjustments section of this manual).  
6
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OPERATION  
KNOWYOUR TILLER  
READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATINGYOUR TILLER.  
Compare the illustrations with your tiller to familiarize yourself with the location of various controls and adjustments. Save  
this manual for future reference.  
These symbols may appear on your Tiller or in literature supplied with the product. Learn and understand their  
meaning.  
SHIFT LEVER  
THROTTLE CONTROL  
CHOKE CONTROL  
DRIVE  
CONTROL  
BAR  
DEPTH STAKE  
LEVELING  
SHIELD  
RECOIL  
STARTER  
HANDLE  
OUTER SIDE  
SHIELD  
FIG. 8  
MEETS ANSI SAFETY REQUIREMENTS  
Our tillers conform to the safety standards of the American National Standards Institute.  
OUTER SIDE SHIELD - Adjustable to protect small plants  
THROTTLE CONTROL - Used to control engine speed.  
DRIVE CONTROL BAR - Used to engage tiller.  
DEPTH STAKE - Controls depth at which tiller will dig.  
LEVELING SHIELD - Levels tilled soil.  
from being buried.  
SHIFT LEVER - Used to shift transmission gears.  
RECOIL STARTER HANDLE - Used to start the engine.  
CHOKE CONTROL - Used when starting a cold engine.  
7
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OPERATION  
The operation of any tiller can result in foreign objects thrown into the eyes, which can re-  
sult in severe eye damage. Always wear safety glasses or eye shields before starting your  
tiller and while tilling. We recommend a wide vision safety mask over spectacles or standard  
safety glasses.  
DEPTH STAKE (See Fig. 10)  
The depth stake can be raised or lowered to allow you more  
versatile tilling and cultivating, or to more easily transport  
your tiller.  
HOW TO USEYOUR TILLER  
Know how to operate all controls before adding fuel and  
oil or attempting to start engine.  
STOPPING (See Fig. 9)  
TINES AND DRIVE  
SHALLOWEST  
TILLING (CULTIVATING)  
Release drive control bar to stop movement.  
TRANSPORT  
POSITION  
Move shift lever to “N” (neutral) position.  
ENGINE  
Move throttle control to “STOP” position. If equipped  
with stop switch, move switch to “STOP” position.  
Never use choke to stop engine.  
DEEPEST  
TILLING  
SHIFT LEVER  
DRIVE CONTROL BAR  
“ENGAGED” POSITION  
DEPTH  
STAKE  
HANDLE  
_2  
e
k
a
t
th_s  
p
de  
THROTTLE  
CONTROL  
FIG. 10  
TILLING (See Fig. 11)  
Release depth stake pin. Pull the depth stake up for  
increased tilling depth. Place depth stake pin in hole  
of depth stake to lock in position.  
Place shift lever indicator in ( ) till position.  
Hold the drive control bar against the handle to start  
tilling movement. Tines and wheels will both turn.  
DRIVE CONTROL BAR  
“DISENGAGED” POSITION  
Move throttle control to “FAST” position for deep tilling.  
To cultivate, throttle control can be set at any desired  
speed, depending on how fast or slow you wish to  
cultivate.  
FIG. 9  
TINE OPERATION - WITH WHEEL DRIVE  
Always release drive control bar before moving shift  
lever into another position.  
IMPORTANT: ALWAYS RELEASE DRIVE CONTROL  
BAR BEFORE MOVING SHIFT LEVER INTO ANOTHER  
POSITION.  
Tine movement is achieved by moving shift lever to  
( ) till position and engaging drive control bar.  
DEPTH STAKE PIN  
“RELEASED” POSITION  
FORWARD - WHEELS ONLY/TINES  
STOPPED  
Releasedrivecontrolbarandmoveshiftleverindicator  
to “F” (forward) position. Engage drive control bar and  
tiller will move forward.  
REVERSE - WHEELS ONLY/TINES STOPPED  
DO NOT STAND DIRECTLY BEHIND TILLER.  
Release the drive control bar.  
Move throttle control to “SLOW” position.  
Move shift lever indicator to “R” (reverse) position.  
Hold drive control bar against the handle to start tiller  
movement.  
“LOCKED”  
POSITION  
NUT “B”  
OUTER  
SIDE SHIELD  
NUT “A”  
HARD TO SHIFT GEARS  
FIG. 11  
Brieflyengagedrivecontrolbarandreleaseorrocktiller  
forward and backward until are able to shift gears.  
8
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OPERATION  
CHECK ENGINE OIL LEVEL (See Fig. 12)  
TURNING  
The engine in your unit has been shipped, from the  
factory, already filled with SAE 30 summer weight oil.  
Release the drive control bar.  
Move throttle control to “SLOW” position.  
PlaceshiftleverindicatorinF(forward)position. Tines  
will not turn.  
With engine level, clean area around oil filler plug and  
remove plug.  
Engineoilshouldbetopointofoverflowingwhenengine  
is level. For approximate capacity see “PRODUCT  
SPECIFICATIONS” on page 3 of this manual. All oil  
must meet A.P.I. Service Classification SF-SJ.  
Lift handle to raise tines out of ground.  
Swing the handle in the opposite direction you wish  
to turn, being careful to keep feet and legs away from  
tines.  
For cold weather operation you should change oil for  
easier starting (See oil viscosity chart in the Mainte-  
nance section of this manual).  
To change engine oil, see the Maintenance section in  
this manual.  
When you have completed your turn-around, release  
the drive control bar and lower handle. Place shift  
lever in till position and move throttle control to desired  
speed. To begin tilling, hold drive control bar against  
the handle.  
OUTER SIDE SHIELDS (See Fig. 11)  
The back edges of the outer side shields are slotted so  
that the shields can be raised for deep tilling and lowered  
for shallow tilling to protect small plants from being buried.  
Loosen nut “A” in slot and nut “B”. Move shield to desired  
position (both sides). Retighten nuts.  
OIL DRAIN  
PLUG  
TO TRANSPORT  
OIL  
FILLER  
PLUG  
CAUTION: Beforeliftingortransporting,  
allow tiller engine and muffler to cool.  
Disconnect spark plug wire. Drain  
gasoline from fuel tank.  
FIG. 12  
ADD GASOLINE  
AROUND THEYARD  
Fill fuel tank. Use fresh, clean, regular unleaded gaso-  
line. (Use of leaded gasoline will increase carbon and  
lead oxide deposits and reduce valve life.)  
Release the depth stake pin. Move the depth stake  
down to the top hole for transporting the tiller. Place  
depth stake pin in hole of depth stake to lock in posi-  
tion. This prevents tines from scuffing the ground.  
IMPORTANT: WHENOPERATINGIN TEMPERATURESBELOW  
32°F (0°C), USE FRESH, CLEAN,WINTER GRADE GASOLINE  
TO HELP INSURE GOOD COLD WEATHER STARTING.  
Place shift lever indicator in “F” (forward) position for  
transporting.  
Hold the drive control bar against the handle to start  
tiller movement. Tines will not turn.  
WARNING: Experienceindicatesthatalcoholblendedfuels  
(called gasohol or using ethanol or methanol) can attract  
moisture which leads to separation and formation of acids  
during storage. Acidic gas can damage the fuel system of  
an engine while in storage. To avoid engine problems,  
the fuel system should be emptied before storage of  
30 days or longer. Drain the gas tank, start the engine  
and let it run until the fuel lines and carburetor are empty.  
Use fresh fuel next season. See Storage section of this  
manual for additional information. Never use engine or  
carburetor cleaner products in the fuel tank or permanent  
damage may occur.  
Move throttle control to desired speed.  
AROUND TOWN  
Disconnect spark plug wire.  
Drain fuel tank.  
Transport in upright position to prevent oil leakage.  
BEFORE STARTING ENGINE  
IMPORTANT: BE VERY CAREFUL NOT TO ALLOW DIRT  
TO ENTER THE ENGINE WHEN CHECKING OR ADDING  
OIL OR FUEL. USE CLEAN OIL AND FUEL AND STORE IN  
APPROVED, CLEAN, COVERED CONTAINERS. USE CLEAN  
FILL FUNNELS.  
CAUTION: Fill to within 1/2 inch of top of fuel tank  
to prevent spills and to allow for fuel expansion. If  
gasolineisaccidentallyspilled,movemachineaway  
from area of spill. Avoid creating any source of igni-  
tion until gasoline vapors have disappeared.  
Donotoverfill. Wipeoffanyspilledoilorfuel. Donot  
store, spill or use gasoline near an open flame.  
9
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OPERATION  
TO START ENGINE (See Fig. 13)  
TILLING HINTS  
CAUTION: Keep drive control bar in  
“DISENGAGED” position when start-  
ing engine.  
CAUTION: Untilyouareaccustomedto  
handlingyourtiller,startactualelduse  
with throttle in slow position (mid-way  
between “FAST” and “IDLE”).  
When starting engine for the first time or if engine has run  
out of fuel, it will take extra pulls of the recoil starter to  
move fuel from the tank to the engine.  
Tilling is digging into, turning over, and breaking up  
packedsoilbeforeplanting.Loose,unpackedsoilhelps  
root growth. Best tilling depth is 4" to 6" (10-15 cm).  
A tiller will also clear the soil of unwanted vegetation.  
The decomposition of this vegetable matter enriches  
the soil. Depending on the climate (rainfall and wind),  
it may be advisable to till the soil at the end of the  
growing season to further condition the soil.  
Soilconditionsareimportantforpropertilling.Tineswill  
notreadilypenetratedry,hardsoilwhichmaycontribute  
to excessive bounce and difficult handling of your tiller.  
Hard soil should be moistened before tilling; however,  
extremely wet soil will “ball-up” or clump during tilling.  
Wait until the soil is less wet in order to achieve the  
best results. When tilling in the fall, remove vines and  
long grass to prevent them from wrapping around the  
tine shaft and slowing your tilling operation.  
You will find tilling much easier if you leave a row un-  
tilled between passes. Then go back between tilled  
rows. (See Fig. 14) There are two reasons for doing  
this.First, wide turns are much easier to negotiate than  
about-faces. Second, the tiller won’t be pulling itself,  
and you, toward the row next to it.  
Donotleanonhandle. Thistakesweightoffthewheels  
and reduces traction. To get through a really tough  
section of sod or hard ground, apply upward pressure  
on handle or lower the depth stake.  
Make sure spark plug wire is properly connected.  
Move shift lever indicator to “N” (neutral) position.  
Place throttle control in “FAST” position.  
Turn fuel shut-off valve 1/4 turn to open position.  
Move choke control to choke position.  
Grasp recoil starter handle with one hand and grasp  
tiller handle with other hand. Pull rope out slowly until  
engine reaches start of compression cycle (rope will  
pull slightly harder at this point).  
Pull recoil starter handle quickly. Do not let starter  
handle snap back against starter.  
If engine fires but does not start, move choke control  
to half choke position. Pull recoil starter handle until  
engine starts.  
When engine starts, slowly move choke control to  
"RUN" position as engine warms up.  
NOTE: A warm engine requires less choking to start.  
Move throttle control to desired running position.  
Allow engine to warm up for a few minutes before  
engaging tines.  
NOTE: If at a high altitude (3000 feet) or in cold  
temperatures (below 32°F), the carburetor fuel mixture  
may need to be adjusted for best engine performance.  
See "TO ADJUST CARBURETOR" in the Service and  
Adjustments section of this manual.  
NOTE: If engine does not start, see troubleshooting  
points.  
4
3
2
1
CHOKE CONTROL  
5
6
7
FIG. 14  
RECOIL STARTER  
HANDLE  
TINE SHEAR PINS  
FIG. 13  
The tine assemblies on your tiller are secured to the tine  
shaft with shear pins (See “TINE REPLACEMENT” in the  
Service and Adjustments section of this manual).  
If the tiller is unusually overloaded or jammed, the shear  
pins are designed to break before internal damage occurs  
to the transmission.  
If shear pin(s) break, replace only with those shown in  
the Repair Parts section of this manual.  
10  
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OPERATION  
CULTIVATING  
OUTER VIEW OF TIRE  
Cultivating is destroying the weeds between rows to pre-  
vent them from robbing nourishment and moisture from the  
plants. At the same time, breaking up the upper layer of  
soil crust will help retain moisture in the soil. Best digging  
depth is 1" to 3" (2.5-7.5 cm). Lower the outer side shields  
to protect small plants from being buried.  
CLEVIS  
PIN  
Cultivate up and down the rows at a speed which will  
allow tines to uproot weeds and leave the ground in  
rough condition, promoting no further growth of weeds  
and grass (See Fig. 15).  
HAIRPIN  
CLIP  
tire_1  
FIG. 16  
INNER VIEW OF TIRE  
CLEVIS  
PIN  
FIG. 15  
HAIRPIN  
CLIP  
ADJUST WHEELS FOR CULTIVATING  
(See Figs. 16 and 17)  
Place blocks under right hand side of tiller and remove  
hairpin clip and clevis pin from right hand wheel.  
Move wheel outward approximately 1 inch (2.5 cm)  
until hole in inner wheel hub lines up with inner hole  
in axle.  
Replace clevis pin and hairpin clip on inside of wheel  
and remove blocks.  
Repeat preceding steps on left hand side.  
ti  
2
FIG. 17  
NOTE: In extremely rough conditions and while cultivat-  
ing, the wheels should be moved outward on the axle for  
increased stability.  
11  
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MAINTENANCE  
MAINTENANCE  
SCHEDULE  
FILL IN DATES  
AS YOU COMPLETE  
REGULAR SERVICE  
SERVICE DATES  
EVERY SEASON  
BEFORE EEAVCEHRUYS5EHEOVEURYS 25EHVOEURRYS50 HOURS  
Check Engine Oil Level  
Change Engine Oil  
1,2  
Oil Pivot Points  
Inspect Spark Arrester / Muffler  
Inspect Air Screen  
Clean or Replace Air Cleaner Cartridge  
Clean Engine Cylinder Fins  
Replace Spark Plug  
2
RH Gear Case Grease Fitting (1oz.)  
1 - Change more often when operating under a heavy load or in high ambient temperatures.  
2 - Service more often when operating in dirty or dusty conditions.  
LUBRICATION CHART  
GENERAL RECOMMENDATIONS  
The warranty on this tiller does not cover items that have  
beensubjectedtooperatorabuseornegligence. Toreceive  
fullvaluefromthewarranty,theoperatormustmaintaintiller  
as instructed in this manual.  
cTHROTTLE CONTROL  
Some adjustments will need to be made periodically to  
properly maintain your tiller.  
d ENGINE  
eRH GEAR CASE  
GREASE FITTING  
All adjustments in the Service and Adjustments section  
of this manual should be checked at least once each  
season.  
Once a year you should replace the spark plug, clean  
or replace air filter, and check tines and belts for wear.  
A new spark plug and clean air filter assure proper  
air-fuel mixture and help your engine run better and  
last longer.  
c DEPTH  
STAKE PIN  
c LEVELING  
SHIELD  
HINGES  
BEFORE EACH USE  
c IDLER  
BRACKET  
Check engine oil level.  
Check tine operation.  
Check for loose fasteners.  
c WHEEL  
HUB  
cSAE 30 OR 10W-30 MOTOR OIL  
dREFER TO MAINTENANCE “ENGINE” SECTION  
LUBRICATION  
Keep unit well lubricated (See “LUBRICATION CHART”).  
eEP #1 GREASE  
12  
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MAINTENANCE  
Disconnect spark plug wire before performing any maintenance (except carburetor adjustment) to prevent  
accidental starting of engine.  
Prevent fires! Keep the engine free of grass, leaves, spilled oil, or fuel. Remove fuel from tank before tipping  
unit for maintenance. Clean muffler area of all grass, dirt, and debris.  
Do not touch hot muffler or cylinder fins as contact may cause burns.  
ENGINE  
LUBRICATION  
Use only high quality detergent oil rated with API service  
classification SF-SJ. Select the oil’s SAE viscosity grade  
according to your expected temperature.  
OIL  
DRAIN  
PLUG  
SAE VISCOSITY GRADES  
SAE 30  
5W-30  
OIL LEVEL  
OIL FILLER  
PLUG  
-20  
0
30  
32 40  
0
100  
60  
80  
F
C
-20  
10  
-30  
-10  
20  
30  
40  
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE  
oil_visc_chart1_e  
FIG. 19  
FIG. 18  
AIR FILTER (See Fig. 20)  
NOTE: Although multi-viscosity oils (5W-30, 10W-30, etc.)  
improve starting in cold weather, these multi-viscosity oils  
will result in increased oil consumption when used above  
32°F (0°C). Check your engine oil level more frequently to  
avoid possible engine damage from running low on oil.  
Yourenginewillnotrunproperlyusingadirtyairlter. Clean  
the foam pre-cleaner after every 25 hours of operation or  
every season. Service paper cartridge every 100 hours of  
operation or every season, whichever occurs first.  
Service air cleaner more often under dusty conditions.  
Change the oil after every 25 hours of operation or at  
least once a year if the tiller is not used for 25 hours in  
one year.  
Remove cover screw and cover.  
TO SERVICE PRE-CLEANER  
Check the crankcase oil level before starting the engine  
and after each five (5) hours of continuous use. Add SAE  
30 motor oil or equivalent. Tighten oil filler plug securely  
each time you check the oil level.  
Remove foam pre-cleaner from air cleaner cover.  
Wash it in liquid detergent and water.  
Squeeze it dry in a clean cloth.  
If very dirty or damaged, replace pre-cleaner.  
Reinstall pre-cleaner into air cleaner cover.  
Reinstall cover and secure screw.  
TO CHANGE ENGINE OIL (See Figs. 18 and 19)  
Determine temperature range expected before oil change.  
All oil must meet API service classification SF-SJ.  
TO SERVICE CARTRIDGE  
Be sure tiller is on level surface.  
Oil will drain more freely when warm.  
Use a funnel to prevent oil spill on tiller, and catch oil  
in a suitable container.  
Carefully remove cartridge to prevent debris from  
entering carburetor. Clean base carefully to prevent  
debris from entering carburetor.  
Clean cartridge by tapping gently on flat surface. If  
very dirty or damaged, replace cartridge.  
Reinstall cartridge, cover with pre-cleaner and secure  
with screw.  
Remove drain plug.  
Tip tiller forward to drain oil.  
After oil has drained completely, replace oil drain plug  
and tighten securely.  
IMPORTANT: PETROLEUMSOLVENTS,SUCHASKEROSENE,  
ARE NOT TO BE USED TO CLEAN THE CARTRIDGE. THEY  
MAY CAUSE DETERIORATION OFTHE CARTRIDGE. DO NOT  
OILCARTRIDGE. DONOTUSEPRESSURIZEDAIRTOCLEAN  
OR DRY CARTRIDGE.  
Remove oil filler plug. Be careful not to allow dirt to  
enter the engine.  
Refillenginewithoil. SeeCHECKENGINEOILLEVEL”  
in the Operation section of this manual.  
13  
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MAINTENANCE  
MUFFLER  
COVER  
KNOB  
Do not operate tiller without muffler. Do not tamper with  
exhaustsystem.Damagedmufflersorsparkarresterscould  
create a fire hazard. Inspect periodically and replace if  
necessary. If your engine is equipped with a spark arrester  
screen assembly, remove every 50 hours for cleaning and  
inspection. Replace if damaged.  
COVER  
FOAM  
PRECLEANER  
AIR CLEANER  
CARTRIDGE  
SPARK PLUG  
Replace spark plugs at the beginning of each tilling sea-  
son or after every 50 hours of use, whichever comes first.  
Spark plug type and gap setting is shown in “PRODUCT  
SPECIFICATIONS” on page 3 of this manual.  
BASE  
TRANSMISSION  
FIG. 20  
Once a season, lubricate the right hand side gear case  
grease fitting with 1 oz. of EP #1 Grease.  
COOLING SYSTEM (See Fig. 21)  
Your engine is air cooled. For proper engine performance  
and long life keep your engine clean.  
CLEANING  
Clean air screen frequently using a stiff-bristled  
brush.  
Do not clean your tiller when the engine and transmission  
are hot. We do not recommend using pressurized water  
(garden hose, etc.) to clean your unit unless the gasket  
area around the transmission and the engine muffler, air  
fi lter and carburetor are covered to keep water out. Water  
in engine will shorten the useful life of your tiller.  
Remove blower housing and clean as necessary.  
Keep cylinder fins free of dirt and chaff.  
CYLINDER FINS  
MUFFLER  
Clean engine, wheels, finish, etc. of all foreign mat-  
ter.  
Keep finished surfaces and wheels free of all gasoline,  
oil, etc.  
BLOWER  
HOUSING  
Protect painted surfaces with automotive type wax.  
AIR SCREEN  
FIG. 21  
14  
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SERVICE AND ADJUSTMENTS  
CAUTION: Disconnect spark plug wire from spark plug and place wire where it cannot come into  
contact with plug.  
TIRE CARE  
TILLER  
TO ADJUST HANDLE HEIGHT (See Fig. 22)  
Select handle height best suited for your tilling conditions.  
Handle height will be different when tiller digs into soil.  
CAUTION: When mounting tires, un-  
lessbeadsareseated,overinflationcan  
cause an explosion.  
First loosen handle lock lever.  
Handle can be positioned at different settings between  
“HIGH” and “LOW” positions.  
Maintain 20 PSI (1.4 kg/cm2) of tire pressure. If tire  
pressures are not equal, tiller will pull to one side.  
Keep tires free of gasoline or oil which can damage  
rubber.  
Retighten handle lock lever securely after adjusting.  
TO REMOVE WHEEL (See Fig. 23)  
Place blocks under transmission to keep tiller from  
tipping.  
HANDLE  
(HIGH POSITION)  
Remove hairpin clip and clevis pin from wheel.  
Remove wheel and tire.  
Repair tire and reassemble.  
HANDLE LOCK  
LEVER  
CLEVIS PIN  
HANDLE  
(LOW POSITION)  
HAIRPIN CLIP  
tire_3  
FIG. 23  
FIG. 22  
15  
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SERVICE AND ADJUSTMENTS  
To maintain the superb tilling performance of this  
machine the tines should be checked for sharpness,  
wear, and bending, particularly the tines which are  
next to the transmission. If the gap between the tines  
exceeds 3-1/2 inches (9 cm), they should be replaced  
or straightened as necessary.  
New tines should be assembled as shown in Fig.  
26. Sharpened tine edges will rotate rearward from  
above.  
TINE REPLACEMENT  
(See Figs. 24, 25 and 26)  
CAUTION: Tines are sharp. Wear  
gloves or other protection when han-  
dling tines.  
A badly worn tine causes your tiller to work harder and dig  
more shallow. Most important, worn tines cannot chop and  
shred organic matter as effectively nor bury it as deeply as  
good tines. A tine this worn needs to be replaced.  
tine_3  
NEW TINE  
WORN TINE  
TINE  
TINE  
3-1/2" MAX (9 CM)  
FIG. 24  
FIG. 25  
HAIRPIN CLIP  
COUNTER  
TINE  
ROTATION  
HAIRPIN CLIP  
SHARP EDGE  
SHARP EDGE  
SHARP EDGE  
SHARP EDGE  
SHARP  
EDGES  
SHEAR PIN  
SHEAR PIN  
tine_13  
SHARP EDGE  
FIG. 26  
16  
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SERVICE AND ADJUSTMENTS  
TO REMOVE BELT GUARD (See Fig. 27)  
NOTE: For ease of removal, remove hairpin clip and clevis  
pin from left wheel. Pull wheel out from tiller about 1 inch  
(2.5 cm).  
TO REPLACE GROUND DRIVE BELT (See  
Figs. 27 and 28)  
RemovebeltguardasdescribedinTOREMOVEBELT  
GUARD”.  
Remove old belt by slipping off engine pulley first then  
remove from transmission pulley.  
Place new belt in groove of transmission pulley and  
into engine pulley. BELT MUST BE IN GROOVE ON  
TOP OF IDLER PULLEY. NOTE POSITION OF BELT  
TO GUIDES.  
Remove screws from side of belt guard.  
Remove hex nut and washer from bottom of belt guard  
(located behind wheel).  
Pull belt guard out and away from unit.  
Replace belt guard by reversing above procedure.  
BELT GUARD  
SCREW  
Check belt adjustment as described below.  
Replace belt guard.  
Reposition wheel and replace clevis pin and hairpin  
clip.  
HEX NUT AND  
WASHER  
(LOCATED  
BEHIND TIRE)  
GROUND DRIVE BELT ADJUSTMENT (See  
Fig. 28)  
For proper belt tension, the extension spring should have  
about 5/8 inch (16 mm) stretch when drive control bar is  
in “ENGAGED” position. This tension can be attained as  
follows:  
Loosen cable clip screw securing the drive control  
cable.  
Slide cable forward for less tension and rearward for  
more tension until about 5/8 inch (16 mm) stretch is  
obtained while the drive control bar is engaged.  
HAIRPIN CLIP AND  
SCREW  
CLEVIS PIN  
FIG. 27  
Tighten cable clip screw securely.  
CABLE CLIP  
SCREW  
ENGINE  
PULLEY  
DRIVE  
CONTROL  
CABLE  
LESS  
TENSION  
MORE  
TENSION  
5/8"  
EXTENSION  
SPRING  
IDLER  
PULLEY  
TRANSMISSION  
PULLEY  
FIG. 28  
17  
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SERVICE AND ADJUSTMENTS  
ENGINE  
TO ADJUST CARBURETOR  
Thecarburetorhasbeenpresetatthefactoryandadjustment  
should not be necessary. However, engine performance  
can be affected by differences in fuel, temperature, altitude  
or load. If the carburetor does need adjustment, contact  
your nearest authorized service center/department  
IMPORTANT: NEVERTAMPERWITHTHEENGINEGOVERNOR,  
WHICH IS FACTORY SET FOR PROPER ENGINE SPEED.  
OVERSPEEDING THE ENGINE ABOVE THE FACTORY HIGH  
SPEED SETTING CAN BE DANGEROUS. IF YOU THINK THE  
ENGINE-GOVERNED HIGH SPEED NEEDS ADJUSTING,  
CONTACTYOURNEARESTAUTHORIZEDSERVICECENTER/  
DEPARTMENT, WHICH HAS THE PROPER EQUIPMENT AND  
EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS.  
TO ADJUST THROTTLE CONTROL CABLE  
(See Fig. 29)  
The throttle control has been preset at the factory and  
adjustment should not be necessary. If adjustment is  
necessary, proceed as follows:  
With engine not running, move remote throttle control  
lever to “FAST” position.  
If throttle lever on engine touches high speed stop, no  
further adjustment is necessary. If throttle lever does  
not touch high speed stop, continue with adjustment  
procedure.  
Loosen cable clamp screw.  
Move throttle lever up until it touches high speed stop,  
and hold in this position.  
Tighten cable clamp screw securely.  
CLAMP SCREW  
CASING  
AND WIRE  
engine_art_78  
THROTTLE  
CONTROL  
FIG. 29  
18  
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STORAGE  
Immediately prepare your tiller for storage at the end of the  
ENGINE OIL  
Drainoil(withenginewarm)andreplacewithcleanoil. (See  
“ENGINE” in the Maintenance section of this manual).  
season or if the unit will not be used for 30 days or more.  
CAUTION: Never store the tiller with  
gasoline in the tank inside a building  
where fumes may reach an open flame  
orspark. Allowtheenginetocoolbefore  
storing in any enclosure.  
CYLINDER(S)  
Remove spark plug.  
Pour 1 ounce (29 ml) of oil through spark plug hole into  
cylinder.  
TILLER  
Pull starter handle slowly several times to distribute  
oil.  
Replace with new spark plug.  
Cleanentiretiller(SeeCLEANINGintheMaintenance  
section of this manual).  
Inspect and replace belts, if necessary (See belt re-  
placement instructions in the Service and Adjustments  
section of this manual).  
Lubricate as shown in the Maintenance section of this  
manual.  
Be sure that all nuts, bolts and screws are securely  
fastened. Inspect moving parts for damage, breakage  
and wear. Replace if necessary.  
OTHER  
Do not store gasoline from one season to another.  
Replace your gasoline can if your can starts to rust.  
Rust and/or dirt in your gasoline will cause problems.  
If possible, store your unit indoors and cover it to give  
protection from dust and dirt.  
Cover your unit with a suitable protective cover that  
does not retain moisture. Do not use plastic. Plastic  
cannot breathe which allows condensation to form and  
will cause your unit to rust.  
Touch up all rusted or chipped paint surfaces; sand  
lightly before painting.  
ENGINE  
IMPORTANT: NEVER COVER TILLER WHILE ENGINE AND  
EXHAUST AREAS ARE STILL WARM.  
FUEL SYSTEM  
IMPORTANT:ITISIMPORTANTTOPREVENTGUMDEPOSITS  
FROMFORMING INESSENTIALFUEL SYSTEM PARTS SUCH  
ASTHE CARBURETOR, FUEL FILTER, FUEL HOSE, ORTANK  
DURING STORAGE. ALSO, EXPERIENCE INDICATES THAT  
ALCOHOL BLENDED FUELS (CALLED GASOHOL OR USING  
ETHANOLORMETHANOL)CANATTRACTMOISTUREWHICH  
LEADSTOSEPARATIONANDFORMATIONOFACIDSDURING  
STORAGE. ACIDIC GAS CAN DAMAGE THE FUEL SYSTEM  
OF AN ENGINE WHILE IN STORAGE.  
Empty the fuel tank by starting the engine and let it run  
until the fuel lines and carburetor are empty.  
Never use engine or carburetor cleaner products in the  
fuel tank or permanent.  
NOTE: Fuel stablizer is an acceptable alternative in  
minimizing the formation of fuel gum deposits during  
storage. Add stabilizer to gasoline in fuel tank or storage  
container. Always follow the mix ratio found on stablizer  
container. Run engine at least 10 minutes after adding  
stablizer to allow the stabilizer to reach the carburetor.  
Do not empty the gas tank and carburetor if using fuel  
stabilizer.  
19  
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TROUBLESHOOTING POINTS  
PROBLEM  
CAUSE  
CORRECTION  
Will not start  
1. Out of fuel.  
1. Fill fuel tank.  
2. Engine not “CHOKED” properly.  
3. Engine flooded.  
4. Dirty air cleaner.  
5. Water in fuel.  
2. See “TO START ENGINE” in Operation section.  
3. Wait several minutes before attempting to start.  
4. Clean or replace air cleaner cartridge.  
5. Empty fuel tank and carburetor, and refill tank with  
fresh, clean gasoline.  
6. Clogged fuel tank.  
6. Remove fuel tank and clean.  
7. Loose spark plug wire.  
7. Make sure spark plug wire is seated properly on  
plug.  
8. Bad spark plug or improper gap.  
9. Carburetor out of adjustment.  
8. Replace spark plug or adjust gap.  
9. Make necessary adjustments.  
Hard to start  
1. Throttle control not set properly.  
2. Dirty air cleaner.  
3. Bad spark plug or improper gap.  
4. Stale or dirty fuel.  
1. Place throttle control in “FAST” position.  
2. Clean or replace air cleaner cartridge.  
3. Replace spark plug or adjust gap.  
4. Empty fuel tank and refill tank with fresh, clean  
gasoline.  
5. Loose spark plug wire.  
5. Make sure spark plug wire is seated properly on  
plug.  
6. Carburetor out of adjustment.  
6. Make necessary adjustments.  
Loss of power  
1. Engine is overloaded.  
2. Dirty air cleaner.  
3. Low oil level/dirty oil.  
4. Faulty spark plug.  
5. Oil in fuel.  
1. Set depth stake for shallower tilling.  
2. Clean or replace air cleaner cartridge.  
3. Check oil level/change oil.  
4. Clean and regap or change spark plug.  
5. Empty and clean fuel tank and refill, and clean  
carburetor.  
6. Stale or dirty fuel.  
7. Water in fuel.  
6. Empty fuel tank and refill tank with fresh, clean  
gasoline.  
7. Empty fuel tank and carburetor, and refill tank with  
fresh clean gasoline.  
8. Clogged fuel tank.  
8. Remove fuel tank and clean.  
9. Connect and tighten spark plug wire.  
10. Clean engine air screen.  
11. Clean/replace muffler.  
12. Make necessary adjustments.  
13. Contact an authorized service center/department.  
9. Spark plug wire loose.  
10. Dirty engine air screen.  
11. Dirty/clogged muffler.  
12. Carburetor out of adjustment.  
13. Poor compression.  
Engine overheats  
1. Low oil level/dirty oil.  
2. Dirty engine air screen.  
3. Dirty engine.  
4. Partially plugged muffler.  
5. Improper carburetor adjustment.  
1. Check oil level/change oil.  
2. Clean engine air screen.  
3. Clean cylinder fins, air screen, and muffler area.  
4. Remove and clean muffler.  
5. Adjust carburetor to richer position.  
Excessive bounce/  
difficult handling  
1. Ground too dry and hard.  
1. Ground too wet.  
1. Moisten ground or wait for more favorable soil  
conditions.  
Soil balls up or clumps  
1. Wait for more favorable soil conditions.  
Engine runs but tiller  
won’t move  
1. Drive control bar is not engaged.  
2. V-belt not correctly adjusted.  
3. V-belt is off pulley(s).  
1. Engage drive control.  
2. Inspect/adjust V-belt.  
3. Inspect V-belt.  
Engine runs but labors  
when tilling  
1. Tilling too deep.  
2. Throttle control not properly adjusted.  
3. Carburetor out of adjustment.  
1. Set depth stake for shallower tilling.  
2. Check throttle control setting.  
3. Make necessary adjustments.  
Tines will not rotate  
1. Shear pin(s) broken.  
1. Gears not timed.  
1. Replace shear pin(s).  
Hard to shift into gear  
1. Briefly engage drive control bar and release or rock  
tiller forward and backward until are able to shift  
gears.  
Tiller shuts off when  
drive control bar  
engaged  
1. Shift lever set in between counter rotating till  
position and forward rotating till position.  
2. Tines jammed.  
1. Shift to either counter rotating till position or forward  
rotating till position.  
2. Clear tines.  
20  
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REPAIR PARTS  
TILLER - - MODEL NUMBER MRT500 (MXR500Q)  
HANDLE ASSEMBLY  
10  
8
36  
41  
42  
35  
15  
2
39  
38  
34  
21  
37  
26  
4
16  
11  
20  
18  
19  
17  
31  
handle_assy_21  
KEY PART  
NO. NO.  
KEY PART  
NO. NO.  
DESCRIPTION  
DESCRIPTION  
1
180634  
Control, Throttle  
Grip, Handle  
Bar, Control  
Screw, Pan Hd. #10-24  
Grip, Handle  
Clip, Hairpin  
Rod, Shift  
Bolt, Carriage 3/8-16 x 1 Gr. 5  
Lock, Handle  
29  
31  
34  
35  
36  
37  
38  
39  
41  
42  
73731000  
Nut, Keps #10-24 Unc  
Bolt, Pivot  
Bracket, Clutch Cable  
Grommet, Handle  
2
150744  
150696  
145821  
146480  
4
8
159227  
71191008  
8389J  
10  
11  
15  
16  
17  
18  
19  
20  
21  
26  
180456X505 Bracket, Handle  
4497H  
102604X  
73800500  
10040500  
72110514  
121248X  
Grip, Bar Control  
Locknut 5/16-18  
Washer, Lock 5/16  
Bolt, Carriage 5/16-18 x 1-3/4  
Bushing, Snap  
108281X  
72110608  
109229X  
73680600  
19131611  
109228X  
150217  
Nut Crownlock 3/8-16 Unc  
Washer 13/32 x 1 x 11 Ga.  
Lever, Lock, Handle  
Handle  
NOTE: All component dimensions given in U.S. inches.  
1 inch = 25.4 mm  
159232  
Cable, Clutch  
21  
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REPAIR PARTS  
TILLER - - MODEL NUMBER MRT500 (MXR500Q)  
MAINFRAME, LEFT SIDE  
7
9
6
8
39  
10  
1
5
3
11  
2
3
2
12  
13  
21  
4
65  
38  
14  
37  
33  
16  
32  
36  
35  
34  
27  
31  
19  
40  
29  
22  
30  
28  
3
23  
44  
24  
15  
40  
26  
25  
mainframe_left_13  
KEY PART  
NO. NO.  
KEY PART  
NO. NO.  
DESCRIPTION  
DESCRIPTION  
1
2
3
4
5
6
7
8
9
73510500  
Nut, Keps 5/16-18  
Washer, Lock 3/8  
Nut, Hex 3/8-16  
Shield, Inner Belt Guard  
Pin Spirol Flared  
Lever, Shift  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
44  
65  
126875X  
4497H  
Rivet, Drilled  
Clip, Hairpin  
10040600  
73220600  
170127  
165501X505 Guard, Belt  
132801  
Belt, V  
164329  
104679X  
12000032  
159229  
Pulley, Idler  
Ring, Klip  
Bracket, Idler  
110111X  
72110404  
8700J  
Bolt, Carriage 1/4-20 x 1/2 Gr. 5  
Plate, Shift Indicator  
102384X  
102141X  
74760616  
102383X  
74760524  
102331X  
130812  
74760544  
140062  
170488  
Bolt, Hex 5/16-16 x 12  
Shaft, Idler Arm  
Bolt, Hex 3/8-16 x 1  
Counterweight, L. H.  
Bolt, Hex 5/16-18 x 1-1/2  
Bracket, Reinforcement, L. H.  
Sheave, Engine  
Bolt, Fin Hex 5/16-18 x 2-3/4  
Cap, Plunger  
86777  
Screw, Hex, Washer Head, Slotted  
#10-24 x 1/2  
10  
11  
12  
13  
14  
15  
16  
19  
21  
22  
23  
9484R  
Clip  
10040400  
73220400  
23230506  
156117  
Washer, Lock 1/4  
Nut, Hex 1/4-20  
Screw, Set, Hex 5/16-18 x 3/8  
Spacer, Split 0.327 x 0.42 x 1.220  
Washer 11/32 x 11/16 x 16 Ga.  
Sheave, Transmission  
Ring, Retainer  
19111116  
145102  
12000028  
110652X  
74770508  
102190X  
Screw Hex Wsh Slt # 10-24 x .50  
Nut, Lock 5/16-18  
Nut, Lock Hex Flange  
73800500  
73970500  
Spacer, Split 0.327 x 0.42 x 2.09  
Bolt, Fin Hex 5/16-24 x 1/2  
Tire  
NOTE: All component dimensions given in U.S. inches.  
183122X624 Rim  
795R Tire Valve  
1 inch = 25.4 mm  
22  
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REPAIR PARTS  
TILLER - - MODEL NUMBER MRT500 (MXR500Q)  
MAINFRAME, RIGHT SIDE  
16  
15  
2
13  
12  
5
10  
7
8
9
11  
10  
KEY PART  
KEY PART  
NO. NO.  
NO. NO.  
DESCRIPTION  
Nut, Lock Hex Flange  
Bracket, Reinforcement  
Counter Weight, R.H.  
Washer, Lock 3/8  
Nut, Hex 3/8-16  
Bolt, Hex 5/16-18 x 1-1/2  
Clip, Hairpin  
Rivet, Drilled  
DESCRIPTION  
2
73970500  
13  
15  
16  
102190X  
Tire  
5
102332X  
102173X  
10040600  
73220600  
74760524  
4497H  
183122X624 Rim  
7
795R  
- - - - - - -  
Tire Valve  
8
Engine, Briggs Model 120302  
(Order parts from engine manufac-  
turer)  
9
10  
11  
12  
7192J  
Tie Cable  
126875X  
NOTE: All component dimensions given in U.S.inches.  
1 inch = 25.4 mm  
23  
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REPAIR PARTS  
TILLER - - MODEL NUMBER MRT500 (MXR500Q)  
TRANSMISSION  
12  
13  
9
15  
11  
60  
10  
16  
48  
9
14  
25  
24  
8
5
18  
31  
7
23  
29  
44  
6
22  
18  
21  
30  
5
18  
19  
4
18  
18  
43  
34  
42  
40  
41  
20  
28  
33  
53  
32  
27  
49  
38  
37  
3
39  
37  
2
35  
36  
50  
24  
25  
52  
53  
44  
58  
51  
transmission_19.5b  
KEY PART  
NO. NO.  
KEY PART  
NO. NO.  
DESCRIPTION  
DESCRIPTION  
29  
30  
31  
32  
33  
34  
35  
36  
102134X  
Chain #35-50 Pitch  
1
180677  
Transmission Assembly (Includes  
Key Nos. 2-54)  
Gearcase, L.H. w/Bearing (Includes  
Key No. 4)  
150737  
Ground Shaft Assembly  
143008  
Bearing, Shaft, Ground Drive R.H.  
Spacer 0.70 x 1.00 x 1.150  
Sprocket and Gear Assembly  
Shaft, Reduction (2nd)  
Screw, Whiz, Lock 5/16-18 x 3-1/2  
Sprocket Assembly w/Bearing (In-  
cludes Key Nos. 37 and 38)  
Bearing, Needle  
Sprocket, Tine  
Gear, Cluster, Red 1st & 2nd  
Gear, Reverse  
Shaft, Reduction (1st)  
Washer, Thrust  
Spacer 1.01 x 1.75 x 0.760  
Seal, Asm. Oil  
Gearcase, R.H. w/Bearing (In-  
cludes Key No. 8)  
Shaft, Tine  
Chain, Roller #50-50 Pitch  
Screw 1/4-20 x 1/2  
Nut, Hex 5/16-18  
2
180627  
106388X  
102121X  
102112X  
102101X  
154355  
3
161963  
5020J  
1370H  
137335  
145101  
4895H  
154467  
7392M  
100371K  
106160X  
142145  
8353J  
12000039  
154466  
4358J  
Gasket, Gearcase  
Bearing, Needle  
Washer, Thrust 5/8 x 1.10 x 1/32  
Pinion, Input  
4
5
6
7
Shaft, Input  
37  
38  
39  
40  
41  
42  
43  
44  
48  
4422J  
8
Bearing, Needle  
Washer, Seal  
154356  
105345X  
105346X  
8358J  
9
10  
11  
12  
13  
14  
15  
16  
18  
19  
20  
Ball, Steel  
Spring, Shift, Fork  
O-Ring  
4220R  
Bracket, Shift  
106146X  
155236  
180631  
Fork, Shift  
Ring, Klip  
Shaft, Shift  
Washer  
49  
50  
51  
52  
53  
58  
60  
- -  
132688  
106147X  
12000040  
102114X  
Ring, Klip  
Gear, Assembly, Reverse Idler (In-  
cludes Key Nos. 21 and 22)  
Gear, Reverse Idler  
Bearing, Needle  
Shaft, Reverse Idler  
Washer, Lock 7/16  
Nut, Hex 7/16-20  
Bearing, Shaft, Ground Drive L.H.  
Spacer 0.765 x 1.125 x 1.23  
17720408  
73220500  
165140  
179520  
183226  
6066J  
21  
22  
23  
24  
25  
27  
28  
102115X  
6803J  
Kit, Bearing, Tine Shaft  
Bolt Shoulder 1/4-20 x .875  
Fitting Grease  
102111X  
10040700  
73610700  
143009  
Grease, Plastilube #1  
NOTE: All component dimensions given in U.S. inches.  
106390X  
1 inch = 25.4 mm  
24  
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REPAIR PARTS  
TILLER - - MODEL NUMBER MRT500 (MXR500Q)  
TINE SHIELD  
4
5
3
6
7
1
8
14  
13  
2
29  
5
14  
12  
11  
9
18  
10  
12  
28  
11  
12  
12  
11  
23  
11  
24  
23  
33  
25  
32  
16  
5
12  
1
23  
11  
27  
24  
26  
29  
22  
21  
20  
15  
19  
16  
tine_shield_13_in  
KEY PART  
NO. NO.  
KEY PART  
NO. NO.  
DESCRIPTION  
DESCRIPTION  
Nut, Flange 5/16-18  
Shield, Side, Outer L. H.  
Pin, Stake, Depth  
Ring, Klip  
Bolt, Carriage 5/16-18 x 3/4  
Spring  
Bracket, Latch  
Spring, Depth Stake  
1
73900500  
161415  
8393J  
12000035  
180847  
8394J  
8392J  
109230X  
102326X505 Shield, Tine  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
32  
33  
102701X  
Grip  
Nut, Hex 3/8-16  
Stake, Depth  
Bolt, Hex 3/8-16 x 2  
Hinge  
Bolt, Carriage 1/4-20 x 1/2 Gr. 5  
Cap, Vinyl  
Pad, Idler  
2
73220600  
102156X  
74930632  
4440J  
3
4
5
6
72140404  
6712J  
109227X  
7
8
9
102695X505 Shield, Leveling  
10  
11  
12  
13  
14  
15  
16  
18  
72140508  
73220500  
10040500  
72110510  
124343X  
161414  
Bolt, Carriage 5/16-18 x 1  
120588X  
Pin, Hinge  
Nut, Hex 5/16-18  
104085X505 Shield, Side  
Washer, Lock 5/16  
73220400  
10040400  
Nut Fin Hex 1/4-20 UNC  
Washer Lock Hvy Helical 1/4  
Bolt, Carriage 5/16-18 x 1-1/4  
Bracket, Shield Tine  
NOTE: All component dimensions given in U.S. inches.  
Shield, Side, Outer R.H.  
Nut, Hex Flange 1/4-20 UNC  
Bolt, Carriage 1/4-20 x 1-1/4 Gr. 5  
1 inch = 25.4 mm  
73900400  
72040410  
25  
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REPAIR PARTS  
TILLER - - MODEL NUMBER MRT500 (MXR500Q)  
TINE ASSEMBLY  
2
1
1
1
3
5
6
7
1
4
3
11  
2
11  
9
8
9
10  
9
4
9
tine_ipb_1  
KEY PART  
NO. NO.  
KEY PART  
NO. NO.  
DESCRIPTION  
DESCRIPTION  
8
74610616  
4460J  
132728  
6555J  
Bolt, Hex 3/8-24 x 1  
Tine, Outer, R.H.  
Assembly, Hub and Plate, R.H.  
Tine, Inner, R.H.  
1
2
3
4
5
6
7
4459J  
Tine, Outer, L.H.  
Clevis Pin  
Tine, Inner, L.H.  
Retainer, Spring  
Assembly, Hub and Plate, L.H.  
Nut, Hex 3/8-24  
Washer, Lock 3/8  
9
132673  
6554J  
10  
11  
3146R  
132727  
73610600  
10040600  
NOTE: All component dimensions given in U.S. inches.  
1 inch = 25.4 mm  
26  
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REPAIR PARTS  
TILLER - - MODEL NUMBER MRT500 (MXR500Q)  
DECALS  
1
2
3
7
4
10  
13  
8
6
11  
5
12  
9
KEY PART  
NO. NO.  
DESCRIPTION  
1
139072  
139073  
139074  
110678X  
110614X  
102180X  
156199  
171077  
120076X  
157607  
171078  
162384  
175643  
188795  
188796  
Decal, Logo  
Decal, Logo  
Decal, Logo  
Decal, Instruction, Tilling  
Decal, Hand Placement  
Decal, Shift Indicator  
Decal, Pnl Cntrl Reverse  
Decal, OHV.N-I/C  
2
3
4
5
6
7
8
9
Decal, Warning, Rotating Tines  
Decal, Throttle  
10  
11  
12  
13  
- -  
- -  
Decal, Rewind Intek  
Decal, Warning Till  
Decal, B&S Tiller  
Manual, Owner’s (English)  
Manual, Owner’s (French)  
27  
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LIMITED WARRANTY  
The Manufacturer warrants to the original consumer purchaser that this product as manufactured is free from de-  
fects in materials and workmanship. For a period of two (2) years from date of purchase by the original consumer  
purchaser, we will repair or replace, at our option, without charge for parts or labor incurred in replacing parts, any  
part which we find to be defective due to materials or workmanship. This Warranty is subject to the following limita-  
tions and exclusions.  
1. This warranty does not apply to the engine or components parts thereof. Please refer to the applicable manu-  
facturer's warranty on these items.  
2. Transportation charges for the movement of any power equipment unit or attachment are the responsibility of  
the purchaser. Transportation charges for any parts submitted for replacement under this warranty must be paid  
by the purchaser unless such return is requested by Electrolux Home Products.  
3. The Warranty period for any products used for rental or commercial purposes is limited to 90 days from the date  
of original purchase.  
4. ThisWarranty applies only to products which have been properly assembled, adjusted, operated, and maintained  
in accordance with the instructions furnished. This Warranty does not apply to any product which has been  
subjected to alteration, misuse, abuse, improper assembly or installation, delivery damage, or to normal wear  
of the product.  
5. Exclusions: Excluded from this Warranty are belts, tines, tine adapters, normal wear, normal adjustments, stan-  
dard hardware and normal maintenance.  
6. In the event you have a claim under this Warranty, you must return the product to an authorized service deal-  
er.  
Should you have any unanswered questions concerning this Warranty, please contact:  
Electrolux Home Products, Inc.  
Outdoor Products Customer Service Dept.  
250 Bobby Jones Expressway  
Augusta, GA 30909 USA  
In Canada contact:  
Electrolux Canada Corp.  
7075 Ordan Drive  
Mississauga, Ontario  
L5T 1K6  
giving the model number, serial number and date of purchase of your product and the name and address of the  
authorized dealer from whom it was purchased.  
THIS WARRANTY DOES NOT APPLY TO INCIDENTAL OR CONSEQUENTIAL DAMAGES AND ANY IMPLIED  
WARRANTIES ARE LIMITED TO THE SAME TIME PERIODS STATED HEREIN FOR OUR EXPRESSED WAR-  
RANTIES. Some areas do not allow the limitation of consequential damages or limitations of how long an implied  
Warranty may last, so the above limitations or exclusions may not apply to you.This Warranty gives you specific legal  
rights, and you may have other rights which vary from locale to locale.  
This is a limited Warranty within the meaning of that term as defined in the Magnuson-Moss Act of 1975.  
®
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