Maxim Tiller MS50B MS30B MS50BR User Manual

Maxim Chain Drive Tiller  
Limited Warranty  
Operator’s Manual and Parts List  
Maxim Manufacturing Corporation, through its dealers will repair or replace any part, or parts  
of the MS50B, MS30B, or MS50BR or handles that are defective in material or workmanship or  
both. Transportation charges on parts submitted for repair or replacement under this  
Warranty must be borne by the purchaser. The original sales receipt must be submitted as  
proof of purchase date. The sales receipt will be returned. Maxim Manufacturing Corporation  
assumes no liability for labor charges made in performance of this warranty.  
The Warranty Periods are as follows:  
A. Frame for 1 year  
B. Handles for 1 year  
C. Transmissions for 1 year  
The Throttle Cable, Tires, Fasteners, and belt are not warranted because during normal service  
they are subject to wear.  
The Warranty on the Frame is Void if:  
A. Frame is broken or bent due to abuse.  
B. Wheels are bent or broken due to impact.  
C. Altering of engine or its components has occurred.  
All warranties are voided if the Tiller has been altered, used under abnormal conditions,  
or subject to abuse, misuse, neglect, improper maintenance, or rented.  
The Engine is warranted by the engine manufacturer, not by Maxim Manufacturing Corporation.  
See Engine Owner’s Manual for information regarding engine warranty.  
Should you experience problems with your tiller take it back to your authorized Maxim  
dealer or distributor to make warranty claims.  
Maxim Manufacturing is not liable for any damage claim or liability claim, personal or oth-  
erwise, resulting from the operation of this tiller in any way.  
MS50B • MS30B • MS50BR  
WARNING  
If incorrectly used this machine can cause severe injury. Those who use and maintain the  
machine should be trained in its proper use, warned of its dangers, and should read the  
entire manual before attempting to set up, operate, adjust or service the machine.  
READ THIS MANUAL.  
RETAIN IT FOR FUTURE REFERENCE.  
Maxim Manufacturing Corporation • Sebastopol, MS 39359 • (601) 625-7471 • 336745 • 2/2003  
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Continued from page 2  
Never adjust the machine or change attachments until the  
a cool, dry place, not in the house or near heating appli-  
Transmission Assembly  
Illustration 4  
engine has been turned off and the spark plug wire discon- ances.  
nected. It is possible that the engine could start while mak-  
ing an adjustment or repair.  
Never store machine with fuel in the fuel tank inside a build-  
ing where open flame or sparks are present. Allow engine  
to cool before storing in any enclosure.  
If carburetor adjustment is necessary, stand to one side  
and keep feet and hands in the clear while making adjust-  
ments.  
Keep the machine and fuel container in locked storage to  
prevent children from playing and tampering with them.  
Keep engine free from accumulations of grass, leaves, or  
excessive grease. An accumulation of these combustible  
materials may result in a fire.  
Maximum operating results and safety can only be expect-  
ed if the machine is maintained and operated correctly.  
Always refer to operator’s manual for important details if  
tiller is to be stored for extended period.  
Store gasoline in a safe container. Store the container in  
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 ARREST-  
ER MEETING APPLICABLE LOCAL LAWS (IF ANY). IF A SPARK ARRESTER IS USED, IF SHOULD BE  
MAINTAINED IN EFFECTIVE WORKING ORDER BY THE OPERATOR.  
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. FED-  
ERAL LAWS APPLY ON FEDERAL LANDS. SEE YOUR AUTHORIZED SERVICE CENTER FOR A  
SPARK ARRESTER.  
WARNING  
The engine exhaust from this product contains chemicals know to the State of  
California to cause cancer, birth defects, or other reproductive harm.  
Specifications  
Contents  
Engine: Briggs & Stratton 4 cycle  
5.5 Intek, 1264120226E1C1032 -- Horiz.  
Safe Practices for Garden Tillers  
Specifications  
2-3  
3
3.5HP #91202 Type 1264  
Air Cleaner: Replaceable Paper Element  
Fuel Tank: 3 Quarts  
Throttle: On Handle Panel  
Transmission: Roller chain and sprocket,  
sealed and running in oil.  
Set-Up Instructions  
General Information  
Operation  
4-5  
5
6
Tines: 14” slasher, self-sharpening  
Tine Speed: Approximately 78 RPM maximum  
Tilling Width: 14” to 26” standard  
Tilling Depth: Up to 12”  
Handle: 14 gauge seamless tubular steel with  
braces  
Adjustments  
7
Maintenance  
7
Parts Lists  
8-11  
12  
Warranty  
Clutch: Hand controlled belt tightener  
Frame: All steel, welded and braced  
Wheels: 10 x 1.75  
Approximate Shipping Weight:  
5hp -- 134 lbs.  
3hp -- 125 lbs.  
10  
3
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SET UP INSTRUCTIONS  
Handle Bar Assembly -- Illustration 2  
UNPACKING  
Ref. Part  
Qty Description  
Throttle Control Assembly  
Do not attempt to lift the tiller from the carton.  
After opening the top, cut all four corners and lay  
the sides flat on the floor or working space. Take  
out all unassembled parts, bag of parts, and pro-  
tective packing. Be careful not to kink the control  
cables.  
1
162007  
1
1
1
1
2
1
1
2
4
4
2
1
1
1
1
1
1
1
2
2
336677  
336676  
130698  
313786  
130699  
130731  
400186  
446136  
443106  
402014  
162029  
359346  
359359  
359327  
359326  
359345  
336683  
400208  
Support LH  
3
Support RH  
4
RH Handle Assembly  
Grip  
5
6
LH Handle Assembly  
Handle Cross Brace  
Screw 5/16 - 18 x 1” Hex  
Lockwasher 5/16 Heavy  
Nut, 5/16 - 18 Hex  
#10 x 3/8” Slot Tapping Scr.  
Cable and Chain Assembly  
Clutch Locking Pin  
Spring  
DEFINITION OF DIRECTIONS  
7
As used throughout this manual, the following  
definitions apply: “Right” and “Left” refer to the  
operator’s right and left when standing behind the  
machine in the normal operating position. “For-  
ward” and “Rearward” likewise to directions from  
the viewpoint of the operator.  
8
9
10  
11  
14  
15  
16  
17  
18  
19  
20  
21  
ASSEMBLY OF HANDLE BARS (Figures 2 & 3)  
1. Attach the lower end of the handle bars to the  
rear of the chassis using four bolts, lock wash-  
ers, and nuts supplied. Assemble nuts but do not  
tighten. Note that the lower belt cover bracket  
goes under the chassis on the left rear handle  
bar bolt.  
Spring  
Clip  
Pin  
Lever  
Figure 2  
5/16 x 18 x 1 3/4 Hex Cap  
2. Assemble the handle bar support brackets to  
the transmission. Note the location of the clutch  
cable guide. Assemble nuts but do not tighten.  
Ref Part  
Qty Description  
Hitch Assembly  
Illustration 2  
1
130670  
1
1
1
2
2
3
2
2
1
Rear Support Assembly  
3
400265  
162034  
162031  
359330  
444721  
460312  
461466  
336685  
Screw, 3/8” - 16 x 1 1/2  
Wheel Yoke Assembly  
Wheel  
3. Assemble the Handle Panel to the handle bars  
and supports. Note the location of the clutch  
cable guide.  
8
13  
14  
16  
18  
19  
21  
Bolt, Wheel  
4. Tighten all bolts and nuts.  
3/8” Center Locknut  
Hairpin  
5. Assemble the throttle control to the underside  
of the panel. Secure the cable to the left handle  
bar with the clip supplied.  
Pin, 3/8” x 2 1/8” Clevis  
Drag Stake  
6. Assemble the clutch spring to the clutch le-  
ver on the handle bar. Crimp lightly so it cannot  
come off.  
7. Route the loop in the end of the clutch cable  
down through the two cable guides and attach it  
level on the idler arm weldment. Attach the chain  
on the other end to the spring on the clutch lever.  
Select a loop that will stretch the spring slightly  
when the clutch lever is pulled against the handle  
bar.  
Figure 3  
IMPORTANT  
ENGINE IS SHIPPED FROM  
FACTORY WITHOUT OIL. DO  
NOT START ENGINE WITHOUT  
ADDING OIL.  
8. With the throttle control in the “OFF” position  
and the clutch lever released, pull the engine  
starter rope several times to be sure that the tines  
do not turn.  
4
9
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Drive Assembly  
Illustration 1  
SET UP INSTRUCTIONS CONTINUED  
TINE ASSEMBLY (Figure 4)  
Assemble the inner tine assemblies to the trans-  
mission. Secure with clevis and hair pins. The  
short end of the tube goes next to the transmis-  
sion. Be sure the cutting edge of the blade faces  
the direction of rotation. Assemble the out tines  
to the inner tine tubes and secure with hair pins  
and clevis pins.  
FINAL SETUP (Figure 5)  
Figure 4  
1. Remove the oil fill plug from the engine. With  
the unit sitting level, fill the crankcase with oil.  
See the engine instruction manual for type and  
further directions (Figure 5).  
Figure 5  
2. Fill the gas tank with clean, fresh, regular  
grade gasoline. Do not mix oil and gas.  
3. When cranking the unit, be sure no one is  
standing in front or near the unit. Check for  
proper operation of the clutch lever (see page 7).  
GENERAL INFORMATION  
The Maxim Chain Drive is the most versatile power unit ever developed for the home gardener and  
does a soil preparation job second to none, so a few minutes spent in studying the following instruc-  
tions will pay many dividends.  
The tiller will dig deeper and move forward slower by pushing down on the handles, and it will go  
ahead faster but at a shallower depth by raising up on the handles. The speed of the rotors is con-  
trolled by the use of the throttle.  
Ref. Part  
Qty Description  
Ref. Part  
Qty Description  
To control the depth of tilling, the tiller must be operated with both the proper throttle speed and cor-  
rect up and down hand pressure on the handles. Raising up means going forward. This action  
releases the grip of the drag stake in the soil, allowing the tiller to progress ahead. Pushing down  
means slowing down or even standing still. This directs the drag stake into the soil, thus holding the  
tiller back. Adjust throttle for desired speed of rotors.  
1
2
3
4
5
6
359328  
1
3
1
1
1
2
Belt, V-Drive  
Screw, 1/4” - 20 x 1/2” Hex Cap 15  
408883  
130733  
359383  
271686  
415562  
443109 3 Nut 3/8” - NF5 Hex  
Guard  
16  
17  
18  
19  
359325 1  
359326 1  
445768 3  
359321 1  
Lever  
Key, Pulley Mtg.  
Pulley, Crankshaft (5 hp)  
Clip  
Flange Nut, 1/4” - 20 Hex Cap  
Idler  
When a person is first learning the proper use of the tiller, it is not unlikely that he will encounter an  
uneven or “buckling” action in the operation of this machine. A little practice will accustom the opera-  
tor on how to overcome this. Never push on the machine if it has dug itself into a depth of six or more  
inches in order to get it to move forward. This is accomplished by slightly raising up on the handles  
and tilting the machine slowly from on side to the other.  
Screw, 5/16” - 18 x 5/16”  
Socket Head Cap Pt.  
7
400235  
446145  
162035  
400194  
359343  
336672  
359340  
1
1
1
4
1
1
1
Screw, 1/2” x 3/4” Hex Head  
Lock washer, 1/2 Heavy  
20  
21  
22  
162069 1  
446136 4  
443106 8  
Idler Shaft  
8
Lock washer, 5/16” Heavy  
Nut, 5/16” - 18 Hex  
9
Belt Guide (Honda 162067)  
Your tiller has been carefully designed in both workmanship and material. However, by the very na-  
ture of its operation, common sense and caution must be employed at all times. Read carefully and  
abide by the safety suggestions stated in this operators guide.  
10  
11  
13  
14  
Screw, 5/16” x 1 1/2” Hex Cap 23  
400112  
3
1/4” - 20 x 1 1/4” Hex Head  
Lock washer, 5/16” Heavy  
Nut, 5/16” - Hex  
Bracket Upper  
Pulley  
24  
25  
26  
446136 4  
443106 1  
400208 4  
Bracket Lower  
Screw, 1/4” - 20 x 1 1/4” Hex  
8
5
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ADJUSTMENTS and MAINTENANCE  
OPERATION  
CLUTCH ADJUSTMENT (Figure 7)  
Proper clutch adjustment is very important. Minor adjust-  
ment, if needed, can be made by using the links on the  
clutch cable chain only. However, the friction type clutch  
may need further adjustments as the “V” belt stretches. Ad-  
just as follows:  
DANGER  
For safe operation, the tine drive must disengage immediately when  
clutch lever is released. If it does not, adjust belt and cable tension as de-  
scribed in “ADJUSTMENT” section of this manual.  
1. Remove belt guard.  
Never leave the tiller unattended with the engine running because chil-  
dren might be attracted to a running tiller and could be injured if struck by the  
rotating tines.  
2. Loosen 4 engine mount bolts. Slide engine forward or  
backwards as required.  
3. Unhook clutch cable from load spring.  
4. Push upward on idler pulley to take all slack from the  
drive belt. Distance between the inside of belt at the idler  
pulley should be between 2 7/8 and 3 1/8 of an inch.  
OPERATION OF CHAIN DRIVE TILLER  
Figure 7  
Figure 6  
1. When ground is hard (especially during spring and fall  
plowing), place wheels in up position by removing the clevis  
pin from the wheel clevis, and repositioning the wheel  
frame bar. Replace the clevis pin and the pin clip (Figure  
6). For weeding or cultivating, wheels may be left down if  
you prefer.  
5. Retighten engine mounting bolts.  
6. Remove all the slack from clutch cable and hook spring  
in proper chain link.  
7. Check your adjustment by starting the tiller and hold-  
ing the tines off the ground. If the tines turn without any  
hand pressure on the clutch lever, the adjustment is too  
tight. Unhook the clutch load and hook into next chain link  
to lengthen clutch cable. If the cable spring on the clutch  
handle doesn’t stretch when you hold the clutch handle all  
the way in, the adjustment is too loose. Unhook spring end  
from chain and hook next link to shorten clutch cable.  
2. Adjust the drag stake for comfortable operation. This  
is done by removing the pin clip from the drag stake clevis  
pin, removing the clevis pin, and sliding the drag stake up  
or down. The drag stake should be set so that when it is  
firmly in the ground, and your hands are on the tiller handle,  
your arms hang comfortably with the elbows slightly bent.  
3. Move the throttle control to center position. Start the en-  
gine and allow it to warm up, then set the throttle at about  
half speed. After you have become familiar with the tiller,  
you may want to run the engine a little faster.  
machine time to do its job.  
CHECK TRANSMISSION OIL  
Figure 8  
4. Concentrate on keeping your arms relaxed (There is a  
natural tendency for any beginner to tense up.). Operating  
the tiller actually takes very little effort. Let the tiller do the  
work.  
Check transmission oil by removing oil level check plug  
(See Figure 8). If you cannot see oil from the check plug.  
Refit plug and add 90 weight gear oil from the oil fill plug.  
Do not overfill. This will cause leakage. Recheck level. Oil  
should just ooze from Oil level check plug.  
4. Press down firmly on the handles, and then squeeze the  
clutch lever. The tines will begin to turn, but the tiller should  
not move forward. If it does, don’t pull backwards -- merely  
press down harder on the handles. When you find the right  
amount of downward pressure so that the tines are digging  
and the tiller is not moving forward, release the pressure  
slightly. As you release it you’ll notice the tiller beginning to  
move forward.  
5. When tilling on sloping ground, turn the front of the  
machine uphill to sufficiently counteract the tendency to run  
downhill.  
CLEAN COOLING SYSTEM (Figure 9)  
Grass or chaff may clog cooling system after prolonged  
service. Continued operation with a clogged cooling sys-  
tem causes severe overheating and possible engine dam-  
age. Remove blower housing and clean regularly.  
6. For best results, operate at reduced throttle settings  
when ground is extremely hard or rough.  
Figure 9  
7. When cultivating, raise drag stake until the handles are  
the proper height as described in Item 1 or set rear wheels  
in position. Proceed at a slow walk, watching the rotor as it  
tills along the row.  
OPERATING TIPS  
BELT REPLACEMENT  
To acquire the knack of letting the tiller do the work without  
effort on the part of the operator, we offer the following sug-  
gestions:  
The drive belt is located on the left side of the machine. To replace a worn or slipping belt proceed as follows:  
1. Remove belt guard.  
8. Tighten all nuts and bolts periodically.  
1. Adjust drag stake so the handles are at such a height  
that your arms hang straight down to contact them. Rear  
wheels should be in up position for deep tillage or ease of  
turning in confined areas.  
2. Make sure clutch lever is in disengaged position.  
TILLING PATTERN  
3. Start at the top of 10” pulley and begin removing belt in clockwise direction (facing tiller from left side). If tension on  
belt is too great the idler pulley may be pulled downward to relieve pressure on belt.  
Whenever possible till the soil in the direction in which the  
planting or rows will run. If the soil is extremely hard and  
dry, it may be advisable to till across the plot on the first  
digging and then obtain the depth you want by tilling in the  
direction the planting will be done.  
4. Once belt is off 10” pulley, remove it from smaller pulley.  
5. Replace belt by reversing sequence of steps above.  
6. Replace belt guard with screws.  
2. Operate the tiller at about three fourths (3/4) throttle.  
3. Don’t hurry the job -- proceed at a slow walk -- give the  
TRANSPORT  
IMPORTANT!  
KEEP HANDS CLEAR OF BELT AND  
TINES WHILE ENGINE IS RUNNING.  
To transport tiller from garden to storage area, lift the  
handles until the drag stake is above ground level, set  
the engine throttle at slow speed and walk the tiller on the  
tines.  
DANGER  
To avoid possible serious bodily injury, when performing any adjustments other than carburetor  
adjustment on engine, remove the spark plug wire and place the wire away from the plug to prevent  
accidental starting.  
6
7
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