Cub-cadet I-Beam Style User Manual

BOOK 4 CHORE PERFORMERSMTD SERVICE LLCP.O. Box 361131 • Cleveland, Ohio 44136-0019© Copyright 2002Form No. 770-10580

2-1 2 2-1. EDGER.2-1.1 Checking the Clutch Rod Adjustment. The clutch rod on your edger has been pread-justed at the factory. Before operating

3-81331. Remove the right rear hex bolt, flat washer,and lock nut securing the rear tine shield to thegear case assembly using a 1/2" socket and

3-822. Remove both self tapping washer head screwssecuring the gear positioner bracket to thegear case assembly using a 3/8” socket. SeeFigu

3-83313. Clean and grease all the shafts.14. Place a scraper between the two case halvesand work around the perimeter of the gearcase until

3-84NOTEPlace the block of wood directly over the endof the input shaft and tap down on the assem-bly.5. Remove the large thrust washer and the wid

3-853NOTEThe 11T inner gear assembly is stepped onboth the top and bottom. See Figure 3-251.11. Remove the shift lever from the gear case. SeeF

3-86free of the center jack shaft assembly. See Fig-ure 3-254.3 .Pivot the 9T tine input sprocket assembly and#50 chain away from the center jac

3-873NOTEPerform the Tiller Gear Case AssemblyRemoval and the Gear Case Separation sec-tions prior to performing wheel shaft assemblyremoval.

3-885. Remove the upper 44T spur gear from the cen-ter jack shaft.6. Remove the large flat washer and lower 44Tspur gear. See Figure 3-262.7. Make cer

3-89310. Grasp the 33T wheel shaft assembly and 10Twheel input sprocket assembly and raise bothuntil the 10T wheel input sprocket assemblycomes

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2-2 2. Remove belt guard at spindle assembly byremoving two hex bolts, lock washers and hexnuts. See Figure 2-4.3. Remove old belt and reas

4-1 4 REPLACING THE CHIPPER BLADE/REMOVAL ANDREINSTALLATION OF THE IMPELLER ASSEMBLY:Figure 4-1.NOTE Prior to performing impeller removal, remo

4-2 7. Remove the nozzle cover and lower housingfrom the upper housing.8. Remove the hex bolt and lock washer securingthe impeller assembly to

4-3 4 TESTING THE SAFETY SWITCHNOTE A multimeter is a must for this section. If any ofthe following tests do not match, replace thesafety swit

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4-7 4 4-1 During extensive factory testing, shreddermodels were tested above and beyond theirrecommended capabilities. It was discovere

4-8 4-1.6 Removing the Flail Screen. NOTE If the discharge area becomes clogged,remove the flail screen and clean area. WARNING Stop engine. Mak

4-9 4 3. Rotate impeller assembly by hand until youlocate one of the chipper blades in the chipperchute opening. Remove blade using a 3/1

4-104-2.Sharpening or Replacing Shredder Blade.WARNING Disconnect spark plug wire and move it awayfrom spark plug.1. Lower hopper assembly. Block u

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4-11 4 5. Remove center bolt from impeller and pullimpeller assembly off crankshaft.6. The clevis pins can then be removed by tap-ping out sp

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4-144-4. SHREDDER MODEL 650. 4-4.1 Maximum size branches for the hopper is 1/2inch in diameter. Maximum size branches forthe chipper is 2 inc

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4-164-5. CHIPPER-VACUUM (See Figure 4-26). 4-5.1 Do not attempt to shred or chip any materialother than vegetation found in a normal y

4-17 4 4-5.6 Shift Lever. The shift lever may be moved intoone of eight positions. Run engine with throttlein the fast position. Use the shift lever

4-184-5.10 Removing the Flail Screen. If the dischargearea becomes clogged, remove the flail screenand clean areas as follows.1. Stop the engi

4-19 4 6. Remove the other blade in the same manner.Replace or sharpen blades. If sharpening,make certain to remove an equal amount fromeach b

4-204-5.13 Belt Removal and Replacement.WARNING Disconnect the spark plug wire and moveaway from the spark plug.1. Remove the plastic belt

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4-21 4 Use Service Kit Number 753-0673 when experiencingchipping difficulty.Install Service Kit as follows:1. Disconnect the spark plug wire and

4-22 6. Locate one of the chipper blades in the accessplate opening by rotating the impeller assem-bly by hand. Remove the blade using a 3/16&q

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4-244-5.14 Hose Attachment. Hose Attachment Kit partnumber 290-005 is available as optional equip-ment. 4-6. POWER VACUUM MODEl 660 (See Figure

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4-264-7.2 Gear Box (Self-Propelled Models Only). The gear box is lubricated with 3 ounces ofHigh Temp. (450°F) grease. Order part number737-0

4-27 4 4-7.5 Belt Removal or Replacement for Self-Pro-pelled Models Only. 1. Remove nozzle or impeller guard from front ofair duct housing.2. Remov

4-28 4-7.6 Hose Attachment. A 10-foot vacuum hosehaving 4-inch diameter is available for modify-ing the power vacuum. Order part number 290-204

4-29 4 4-8. LEAF BLOWERS MODELS 692 AND 693(See Figure 4-58). 4-8.1 These leaf blowers have twin heavy duty 5inch caster type ball bearin

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3-1 3 3-1. GENERAL. For further information regarding this section,refer to Technical Service Video “Chain CaseTeardown 410- 420 Tiller.”3

5-1 5 (Drive System Related Problems) 1. Clutch lock system not functioning correctly. Either it is staying in the locked mode or it is not locking a

5-2 9. Friction wheel assembly part no. 718-0231 (1992 only) failing either by separation of the rubber frictionmaterial or the brazed hub separ

5-3 5 18. Auger housings 26", 28" and 30" cracking in each front corner at the bottom.a. If the cracking is only less than 1" the

5-4 MODEL YEARS 1992 THROUGH 1996 900 SERIES MODELS (Large Frame) (Drive System Related Problems) 1. Stiff shifting from low speed to high speed and

5-5 5 SNOW THROWER PROBLEM FLOW CHART MODEL YEAR 1997 600/700 Series Snow Throwers Model Year 1997Problem: Friction wheel rubber traction disc part n

5-6 4) Refer to illustration no. 5-2. (Service Bulletin W-102) Place hex bolt with four flat washers through theslot in the lift handle bracket. Secu

5-7 5 OVERVIEW OF “1995” SNOW THROWER CHANGES 1. Failure of the 735-0243 friction wheel rubber. Failure of the rubber ring is dire

5-8 4. Chute tilt cable guide 731-1313A replaces 731-1313. The new guide has significant reinforcement ribs oneach side of the mounting area.5. The n

5-9 5 NEW FOR 1998 SNOW THROWERS —All new 800 series large frame wheel drive snow thrower. This new unit is very similar to the new style900 series l

5-105-1. 21-INCH SNOW THROWERS MODELS 180THROUGH 191. 5-1.1 The only difference between Models 180 and181 is Model 181 is an electric start

3-1 3 3-1. GENERAL. For further information regarding this section,refer to Technical Service Video “Chain CaseTeardown 410- 420 Tiller.”3

5-11 5 5-1.2 Operating Controls. 1. Squeeze control handle to engage augers anddrive unit forward. Pushing downward on han-dle will raise augers

5-125-1.4 Belt Adjustment.NOTE Periodic adjustment of belt tension may berequired due to normal stretch and wear on thebelt. Adjustment is ne

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5-14GASOLINE AND OIL MIXTURE The snow thrower uses a two cycle engine thatrequires a mixture of gasoline and oil for lubri-cation of bearings and oth

5-15 5 ley, measure the spring while the clutch controlon the handle is in the disengaged position.RECORD THIS MEASUREMENT.Pull the clutch co

5-165-2. 20-INCH SNOW THROWER MODEL 225(See Figure 5-11).5-2.1 Drive Clutch Control Adjustment. 1. Hold clutch grip so that grip is approximat

5-17 5 5-2.4 Rear Axle Chain Adjustment. 1. Tip snow thrower forward so it rests on augerhousing.2. Loosen two hex nuts at wheel axle on the righthan

5-18 1. Remove three self-tapping screws from beltcover using a 7/16 inch wrench. See Figure 5-16.2. Remove belt keeper by removing self-tapp

5-19 5 b. Lift belt out of sheave of bottom pulley.c. Slide belt out of bottom of chain case.d. Install new belt.7. Remove drive belt as follows:a. F

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3-2 grease level. If the case is disassembled thegrease can be replaced. See Figure 3-1. For asummary of specifications for Model 031, seeTa

5-21 5 5-3.3 Drive Clutch Adjustment. 1. Unhook spring at the lower end of engagementrod from drive bracket. See Figure 5-23.2. Adjust nut on enga

5-22 5-3.6 Changing Friction Wheel. 1. Move shift lever into reverse position. This willmove friction wheel over to the extreme leftside insid

5-23 5 5-3.7 Drive Wheels (Models 550 and 586 Only). The wheels on the Models 550 and 586 snowthrowers may be adjusted for three differentmetho

5-24 6. To remove auger drive belt, remove four shoul-der bolts and belleville washers at auger pul-ley. A 3/4 inch wrench is required. See Fig

5-25 5 5-4. SNOW THROWERS MODELS 552 AND 588(See Figure 5-35). 5-4.1 Drive clutch adjustment. Refer to Models 440and 450 in paragraph 5-3.3.5-

5-26 5-4.6 Track Adjustment.WARNING Disconnect spark plug wire from spark plugand ground against engine. Drain fuel from fueltank. CAUTION The

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5-28 The track lock is located on the right side ofsnow thrower and is used to select the positionof the housing and the method of track ope

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5-305-5.5 Auger Belt Removal and Replacement. 1. Remove chute crank at chute assembly byremoving cotter pin and flat washer.2. Remove side an

3-3 3 3-2A.1 CONTROLLING SPEED AND TILLINGDEPTH: 1. Depth Stake Adjustment: The depth stake actsas a brake for the tiller and controls the depthan

5-31 5 5. Loosen (do not remove) bottom bolts whichattach auger housing to frame assembly.6. Remove two engine pulley belt guards andshou

5-325-6. 28-INCH SNOW THROWERS MODELS 840AND 850 (See Figure 5-51).5-6.1 Drive and Auger Clutch Adjustments. Adjust drive and auger clutch as fol

5-33 5 5-6.2 Shift Rod Adjustment Check . Check shift rodadjustment as follows: WARNING Disconnect spark plug wire and ground itagainst engine.

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5-3556. Assemble new friction wheel so the cuppedside is towards friction wheel adapter.7. Fasten friction wheel to friction wheel adapterwith

5-366. To separate auger housing from frame assem-bly, two people are required. One person is inthe operating position. Squeeze auger clutchgrip

5-375NOTEShoulder of the bolt must go through bothsides of idler bracket assembly.8. Reassemble belt cover and chute crank.5-6.7 Drive Belt R

5-385-7.6 Gear Case Lubrication. The gear case islubricated with 4 ounces Shell Alvania greaseEPR00 (order part number 737-0168). SeeFigur

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5-405-8. SNOW THROWERS MODELS 610E, 640F,660G, 616E, 646F AND 666G (See Figure 5-68).5-8.1 Traction Drive Clutch Adjustment. Adjusttraction dr

3-4 For cultivating, a two to three inch depth isdesirable. The throttle should be set to controlforward movement to a slow walking speed.Wit

5-415NOTEAuger drive and traction lockout rods replacedby cables in 1992.a. Loosen hex nut and thread cable in or outas necessary. See Figure 5-70.b.

5-425-8.5 Blade impellers, in 1991 and prior years, werea 4-blade style. In 1992 they were changed toa 3-blade style. See Figure 5-72.5-8.6 Augers wer

5-4352. Remove self-tapping screws from frame coverunderneath snow thrower.3. Remove klik pins which secure the wheels,and remove wheels from ax

5-442. Remove plastic belt cover on the front ofengine by removing two self-tapping screws.See Figure 5-76.3. Unthread the bottom of a

5-4551994 to Present:NOTEIt is necessary to remove both belts in order tochange either one. If changing just one belt, becertain to check the conditio

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5-525-9. STEERABLE TRACK DRIVE MODELS 612EAND 642F (See Figure 5-85).5-9.1 Traction drive clutch adjustment. Refer tomodel 610E in paragraph 5-8.

5-5355-9.6 Drive System. Completely new drive systemwith fewer moving parts combine PTO frictiondrive that prolongs transmission life andin

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6-1 6 ADDENDUM :The procedure for the removal and replace-ment of seals in the cylinders of current modellog splitters. We are requesting that

6-2 2. Remove and replace the Gibs. Reassemblethe Gib plates, making certain flat washers arein place under the Gib plates.3. Readjust the bol

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1-1 1 Introduction The 22" wheeled string trimmer was intendedfor clearing heavy growth from unimprovedland. This model has a blade brake c

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6-5 6 6-2. LOG SPLITTER MODEL 632 (See Figure 6-3). 6-2.1 The Model 632 log splitter will split hardwoodlogs up to 26 inches long. It is trailer

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6-7 6 3. The original factory setting for the unloadingvalve is designed to provide maximum flowwhile remaining below engine stalling loa

6-8CAUTION The user should not attempt to adjust orchange the setting of the relief valve.5. Because of the potential for system damage,

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6-10 There are two log splitter cylinder manufactur-ers. To identify Best Metal, the company’sname and part number will be cast on the cyl-inde

6-10 There are two log splitter cylinder manufactur-ers. To identify Best Metal, the company’sname and part number will be cast on the cyl-inde

6-11 6 CAUTION The beam needs to be in the down positionwhile using the splitter to avoid oil dischargefrom the vent. The front stand

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6-13 6 6-3.3 Belt Removal or Replacement.WARNING Disconnect spark plug wire from spark plugand ground it against engine block.1. Drain gasoline

3-7 3 3-2.5 Disassembly of Tine Chain Case. Proceedas follows:1. Remove chain case from tiller. 2. Remove self-tapping screws, hex bolts, lockw

6-13 6 6-3.3 Belt Removal or Replacement.WARNING Disconnect spark plug wire from spark plugand ground it against engine block.1. Drain gasoline

6-14 6-4.2 Specifications. For summaries of the speci-fications of Models 642 and 645, see Tables 6-4 and 6-5. Log Splitters 2.fm Page 14 Wed

6-15 6 6-4.3 The hydraulic pump is one of two types. Ascomplete units, the two pumps are inter-changeable (refer to parts list for part

6-16 All two-stage log splitter pumps have the samebasic hydraulic circuit. Two gearsets (one largeand one small) use a common inlet and outlet.A se

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3-8 9. To remove the tine shaft assembly simply pullthe complete assembly out of the housing. SeeFigure 3-15. NOTE The chain case is lubricated with

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6-28COMPACT DESIGNCAST IRON CONSTRUCTION Two Volume High/Low Hydraulic Pumps are compact, two stage, external gear pumps designed foruse at elevated

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6-32DO 1. Use clean oil.2. Use an oil filter (preferable at the pump inlet).3. Mount the pump properly (check alignment).4. Use flexible “spider-t

3-9 3 NOTE The dust caps have a molded lip on the IDwhich seats into a groove in the bearing huballowing for a tight fit.3. Careful

6-32DO 1. Use clean oil.2. Use an oil filter (preferable at the pump inlet).3. Mount the pump properly (check alignment).4. Use flexible “spider-t

6-33 6 Directing the flow to the rear of the cylindercauses it to extend. The cylinder will extendquickly until it meets resistanc

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6-36 LOG SPLITTER WORK SHEET FOR TEST KIT PART NUMBER 759-3742 WORK SHEET VIDEO TEXTWORK SHEET VIDEO TEXT This program covers testing procedures for

6-37 6 ________PSI The pressure gauge should read zero if the pump is operating correctly.(should be O)Begin at the top and close the needle valve s

6-38 Open the needle valve to a fully open position.Start the engine and run it at full throttle.Hold the valve handle in the fully open position unt

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6-33 6 Directing the flow to the rear of the cylindercauses it to extend. The cylinder will extendquickly until it meets resistanc

3-9 3 NOTE The dust caps have a molded lip on the IDwhich seats into a groove in the bearing huballowing for a tight fit.3. Careful

6-41 6 NOTE Make certain that all staples are removed orbent over before continuing.20. Remove the plastic bag covering all the logspli

6-42Beam Support/Latch Bracket Installation 1. Separate all the components of the beam sup-port/latch bracket using a 9/16" socket and a

6-43 6 NOTE The hardware that is used to assemble thissection will be found in place on the frameassembly and the tongue assembly.

6-44 1. Locate the hex bolts, flat washers, lock wash-ers and hex nuts used to secure the fenders tothe frame assembly. See Figure 6-32. NOTE This h

6-45 6 2. Disconnect the high pressure hydraulic hosefrom the 45 degree pump adapter using two7/8" wrenches.3. With a partner or

6-463. Remove the plastic protective cap from the fit-ting on top of the filter head housing.4. Attach the free end of the return hose to the fil-ter

6-476Engine PreparationNOTESee engine operating and maintenanceinstructions manual.Log Splitter Preparation1. With engine oil, lubricate the

6-4810. Retract the wedge assembly fully.11. Shut the engine off and fill the reservoirassembly to the correct level.12. Start the engine

6-496IMPORTANT: As normal wear occurs, thewedge assembly must be adjusted to makecertain the tolerances are correct for smoothoperati

6-5021. Shut the log splitter off.22. Make certain the face and back side of thebeam assembly are well lubricate where thewedge assemb

3-10 3-3.3 Clutch Adjustment. WARNING Disconnect spark plug wire and ground itagainst engine before performing any adjust-ments, repairs o

6-516IMPORTANT: Periodically remove and inspectthe adjustable gibs between the wedge plateand the back plate as follows: See Figure 6-55.NOTEThe

6-523. Remove, inspect, and replace the adjustablegibs if necessary. See Figure 6-58.4. Assemble the left Gib adjustment assembly inthe reverse

6-536Test Kit Components. See Figure 6-59.IMPORTANT: The following test kit informationand systematic questioning allows diagnosesof the hydraulic

6-54NOTEMake certain the spark plug wire has beenremoved from the spark plug, and it isgrounded to the engine block. Simply graspt

6-55610. Quickly reconnect the suction hose and secureit in place using a 5/16" socket._____11. Check the fluid level and replace the lo

6-564. Set the high pressure hydraulic hose into an oildrain container.Test Kit Installation ProceduresNOTEThe pressure gauge side of the test

6-5762. Start the engine and move the throttle (ifequipped) to fast._____NOTEMost log splitters do not have a throttle control,they are set to

6-589. Record the PSI._____NOTEThe PSI reading should be between 300 and700 PSI.10. Record the GPM._____NOTEThe GPM reading should be between 1

6-596Control Valve and Hydraulic Cylinder TroubleshootingNOTEThis section is to be used after the Gen-eralInspection and Pump Troubleshooti

6-6012. If the (PSI “B”) is less than the recorded (PSI“A”) in the Final Pump Pressure Test, theremay be a problem with the control valve,

3-11 3 2. Remove self-tapping screws, hex bolts, lockwashers and hex nuts from the outer edge ofchain case.3. Remove hex bolt, lock washer and hex

6-616NOTEThe pressure gauge side of the test kit con-nects to the control valve, and the flow gaugeside of the test kit connects to the rear p

6-623200 PSI limit, the Pressure Relief ValveAdjustment section must be performed tolower the PSI._____11. If the recorded PSI “C” is

6-63610. Momentarily close the needle valve com-pletely, record the PSI gauge and immediatelyopen the needle valve back up._____CAUTIONThis ste

6-643. Start the engine and move the throttle (ifequipped) to fast._____NOTEMost log splitters do not have a throttle control,they are set to

6-656Log Splitter Hydraulic Pump RemovalIMPORTANT: Make certain the log splitter islocked into the horizontal position. See Figure6-93.1. Loose

6-668. Cap the hydraulic pressure hose and position itout of the way.9. Remove both hex nuts and lock washerssecuring the gear pump to the cou

6-67614. Remove the lower coupling half from the gearpump input shaft. See Figure 6-101.NOTEIf the lower coupling half will not come off theinput sha

6-683. Identify all the sections left to right (1 through4), and Slowly separate and inspect them. SeeFigure 6-105.a. Section 4—Left inside face. Se

6-696c. Section 3—Right face with “O” ring. See Figure6-108d. Section 2—Left face. See Figure 6-111.e. Section 2—Left face with drive pinion g

6-70g. Section 2—Left face with componentsremoved. See Figure 6-114.h. Section 1—Right inside face. See Figure 6-115.4. Assemble in the

3-12CAUTION When reassembling, make certain the stepspacers and washers are positioned properlyor damage to the shaft assembly and/or bear-

6-7162. Place the square key into the crankshaft key-way making certain it is flush with the end ofthe crankshaft.3. Tap the key into the k

6-72Control Valve1. Loosen the hose clamp securing the returnhose to the control valve return elbow using a5/16" socket or a flat-blade

6-7365. Remove the 90 degree return elbow from thecontrol valve using a 7/8" wrench and a largeadjustable wrench. See Figure 6-125.6. Remo

6-741. Remove the cotter pin and clevis pin securingthe control lever assembly to the control leverbracket using a pair of needle nose pliers. SeeFig

6-75612. Grasp the control valve assembly and rotate itto the vertical position with the kickoff valvespool bracket end down.13. Apply light

6-7621. Inspect all components for damage or wear.See Figure 6-135.22. Inspect the kickoff valve spool for damage orwear. See Figure 6-

6-7765. Remove the relief valve spring and steel ballfrom the control valve body using a small mag-net.NOTEMake certain the spring is ins

6-78IMPORTANT: Prior to performing this section,perform the Control Valve Removal section.1. Remove all four hex cap screws and lock nutssecuring th

6-796NOTETap the rod cap in uniformly around the perim-eter.7. Remove the large retaining ring from the cylin-der by raising it up and pulling outwar

6-80NOTEThe thin flat backup seal washer goes to thefront, and the round “O” ring seal goes towardsthe rear of the end cap. See Figure 6-148.1

3-13 3 8. Reattach tines/wheels with the hardwareremoved in step 3. 3-3.7 Input Shaft Bearing Replacement.WARNING Disconnect spark plug wire and

6-816NOTEThe rear position contains two seals: First, athin “O” ring goes into the groove position, andthen a second thin flat seal sits righ

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7-1 7 MOWER TERMS: Full Baffled Housing: A front and rear weldedhousing underneath the deck to create an entirecircular deck. This in

7-2Convertible Mower: Converts from reat baggingto side discharge style mower. Gives the versatilityof two mowers in one. If a mulching kit wer

7-3 7 Gear and Pinion Steering: A very smooth typesteering where a gear on the end of the steeringshaft meets another gear calle

7-4Bushel: One bushel equals 8 gallons. Gasoline: We recommend regular unleaded gas.Do not leave gas in tank over the winter unlessf

7-5 7 work. The larger the horsepower rating of anengine, the greater is its ability to handle the job. Solid State Ignition: Solid state

7-6Hydraulic Motor: A device that converts hydraulicfluid power into mechanical force and motion bytransfer of flow under pressure. Hydraulic

3-13 3 8. Reattach tines/wheels with the hardwareremoved in step 3. 3-3.7 Input Shaft Bearing Replacement.WARNING Disconnect spark plug wire and

1-2 3. Uncross the two lines so that they are roughlyparallel.The line will be trimmed to final length by theblade mounted under the deflector.• 22&q

3-14 6. Reassemble the new belt following instructionsin reverse order. 3-4.2 Reverse Drive Belt Removal and Replace-ment. 1. To remove rev

3-15 3 NOTE The drive system has 3 chain reduction steps.Each step reduces the speed and increasesthe torque or power down to the axle shaft. T

3-16CAUTION When reassembling, make certain the stepspacer and washer are positioned properly ordamage to the shaft assembly and/or bearingswi

3-17 3 Make certain new seal is completely seatedagainst shaft bearing.7. Reassemble dust caps making certain they arefully seated on bearing h

3-17 3 Make certain new seal is completely seatedagainst shaft bearing.7. Reassemble dust caps making certain they arefully seated on bearing h

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3-20 DRIVE SYSTEMTHE 390 SERIES TILLER IS THE SAME AS THE 340EXCEPT THAT IT HAS REVERSE DIRECTION ALSO.THE REVERSE IS 104 RPM. TH

3-21 3 3-5.3 Tine Width Adjustment. 1. The tilling width before adjustment is 22inches. See Figure 3-43.2. The tilling width can be increased to 24 i

3-223-5.5 Reverse Clutch Control Cable Attachment(Model 390 only). If the spring has comeloose, attach the end of the reverse cabl

1-3 1 1. Remove the nuts from the four carriage boltsthat hold the deflector to the trimmer baseusing a 7/16" wrench. See Figure 1-7.2.

3-23 3 2. Lift belt off transmission pulley and engine pul-ley.3. Remove hex nut which secures reverse idlerpulley to idler bracket. Slide idler pull

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3-25 3 3-6.1 Belt Tension Adjustment for Drive and TineClutches. Periodic adjustment of the belt ten-sion may be required due to normal stret

3-25 3 3-6.1 Belt Tension Adjustment for Drive and TineClutches. Periodic adjustment of the belt ten-sion may be required due to normal stret

3-26 5. Slip engine pulley out until belt can beremoved.6. Install new belt. 3-6.3 Removal and Replacement of Short DriveBelt. 1. Remove tine b

3-27 3 NOTE Upon reassembly, refer to your owners guidefor correct assembly of wire belt guard for yourmodel tiller. NOTE If the V-idler or

3-28 10. To remove the wheel shaft assembly simplypull the complete assembly out of the housing.See Figure 3-61. CAUTION When reassembling, make c

3-29 3 3-6.5 Disassembly of Tine Chain Case. Disassem-ble as follows:1. Remove chain case from tiller. 2. Remove self-tapping screws, hex bolts, loc

3-30 9. To remove tine shaft assembly simply pullcomplete assembly out of housing. See Figure3-67. CAUTION When reassembling, make certain step

3-31 3WARNINGDisconnect spark plug wire and ground itagainst engine.1. Remove self-tapping screws which securebearing housing to tiller housing

1-4 5. Remove the V-belt from the idler pulley. SeeFigure 1-11. Figure 1-11 6. Grasp the idler bracket asse

3-31 3WARNINGDisconnect spark plug wire and ground itagainst engine.1. Remove self-tapping screws which securebearing housing to tiller housing

3-323. To remove reverse drive belt, lift up on smallidler pulley. Slip belt off outside sheave ofwheel chain case pulley. Remove belt fr

3-333NOTEIf V-idler or flat idler pulleys are removed forany reason, be sure to install with hub sideagainst idler bracket. See Figure

3-343-7.7 Input Shaft Bearing Removal and Replace-ment. Refer to paragraph 3-6.7.3-8. TILLER MODELS 410 AND 420 (Figure 3-78).Tillers.fm Page

3-3533-8.1 Belt Removal and Replacement.CAUTIONDo not use an off-the-shelf belt.Your tiller has been engineered with a beltmade of special m

3-36gear selection lever in NEUTRAL, start theengine.2. Standing on the right side of the tiller, visuallyexamine the belt (inside the belt

3-3732. Remove the self-tapping screw and casingclamp which holds the throttle cable to theengine. Disconnect the throttle control cable“Z

3-385. Remove bolts and nuts securing the LH andRH tine shield brackets, located on inside frontof the tine shield. Remove the nuts and boltson

3-3932. Inspect and clean the tine shaft and wheelshaft. Polish to remove any nicks or burrs. SeeFigure 3-90.3. Remove the 17—1/4-20 taptite screws. S

3-409. Split the housing and remove the upper half bysliding evenly over the wheel and tines shafts.See Figure 3-97.10. Remove the gasket. See Figure

1-5 1 BELT REPLACEMENTNOTE There are two different crankshaft pulleys thathave been used in string trimmer production.Some string trimmers have engin

3-41314. Remove the wheel shaft assembly, Part No. 611-0023, along with washer and spacer. SeeFigure 3-102. 15. Remove the washer, spacer, gear idler

3-4219. Complete drive shaft chain and sprocket disas-sembled. See Figure 3-107.20. Remove the shift fork retaining ring andremove the shift f

3-4333-9. TILLER MODELS 430 AND 447.3-9.1 Dual direction rear tines make the Model 430exceptionally versatile. For light tilling, set thesixteen

3-443.8.2 Clutch Adjustment.WARNINGDisconnect spark plug wire and ground itagainst engine before performing any adjust-ments, repairs or ma

3-4533. Remove belt. Reassemble new belt followinginstructions in reverse order.NOTEUpon reassembly, make certain the belt isrouted over idler p

3-464. Remove cotter pin from hooked end of controlrod at indicator bracket. See Figure 3-116.5. Remove roll pin from indicator bracket. SeeFigure 3-1

3-4738. Remove belt cover from left side of tiller as fol-lows. See Figure 3-120.a. Remove two self-tapping screws and flatwashers from the top of bel

3-4812. Remove handle by removing handle adjust-ment crank and two belleville washers, hex nutand hex bolt. See Figures 3-124 and 3-125.13. Remove dep

3-49316. Remove eight bolts, lock washers and hexnuts at front bottom edge of tine shield andreinforcement bracket. Lift off tine shield. Se

3-5020. Remove wheels from wheel shaft by removinghex bolt and belleville washer. See Figure 3-133.21. Remove V-pulley by removing hex bolt and

1-6 1. Secure the pulley flywheel so that it will notspin during removal of the crankshaft bolt.See Figure 1-17.

3-5132. Remove three hex nuts and flat washers. 3. Remove two gear case brackets. See Figure3-136.NOTEIt is not necessary to remove dust covers

3-527. Remove three spacers. See Figure 3-97. 8. Lift out spur gear from jackshaft. Clean andinspect spur gear for any damage; replace ifnecess

3-53314. Remove shifting bracket and spacer. See Fig-ure 3-144.NOTEIn 1989 and earlier production the shift bracketcould slide out. In 1990 and

3-54Removing the Tiller from the Carton1. Remove the staples from the top of the cartonusing a pair of pliers. See Figure 3-147.2. Carefully slice the

3-553Depth Stake Installation1. Tilt the tiller forward and rest it on the frontcounterweight.2. Locate the depth stake and remove the “T”knob, flat w

3-56NOTEDO NOT remove the lower rear hex cap screwand flange lock nut securing the handle brack-ets and spacer.2. Locate and align the lower handle as

3-5736. Secure the eyebolt to the clutch bail with thecap screw, flat washers, and elastic lock nutusing a 7/16” socket and a 7/16” wrench.7. G

3-58secure it with the hairpin removed earlier. SeeFigure 3-160.Neutral Clutch Cable AdjustmentIMPORTANT: Make certain the engine hasbeen servic

3-5932. Place the gear selector indicator bracket in theForward Wheel Drive position.3. Standing behind the tiller, grasp the upper han-dle bar assemb

3-609. Remove the input pulley from the input shaft. 10. Loosen the lower jam nut securing thethreaded clutch cable end to the tiller cas

1-7 1 4. Roll the belt off of the crankshaft pulley, andslip the belt between the pulley and the rearaxle. See Figure 1-21.

3-6137. Remove the acorn lock nut and flat washersecuring the side belt cover to the tiller casingusing a 7/16” socket.8. Remove the hex screw securin

3-62b. The shift cover label clearly states the gear thetiller is in, and what direction the tines willrotate. See Table 3-6 below.NOTENever e

3-6336. When breaking up sod and performing shallowcultivation, use the setting which gives 1” of till-ing depth (second hole from the top).NOTEMake

3-649. Loosen the center lock jam nut and hex capscrew securing the idler belt keeper to the idlerpulley.10. Remove the V-belt from the unit.

3-653a. Fix: Perform the Clutch Cable Adjustment sec-tions.5. Is the V-belt worn or stretched? See Figure 3-180.a. Fix: Perform the Belt Replacement

3-66a. Fix: Replace the snap ring and run through allthe gear selector positions. Test the unit in nor-mal11. With the spring pin and indicator bracke

3-673NOTEThe detent shaft must be held in place to movethe shift fork.2. Slowly rotate the hexed input shaft counter-clockwise and inspect the followi

3-6818. Does the 33T wheel shaft assembly haveextensive wear or damage?19. Does the weld securing the 33T gear to thewheel shaft assembly appear t

3-69310. Does the 44T spur gear have extensive wearor damage?11. Does the 44T spur gear rotate the 10T wheelinput sprocket assembly?12. Does the 10T w

3-70a. Fix: Proceed to the Interior Gear Case Assem-bly3. Is the spiral pin securing the indicator bracketto the shift lever? See Figure 3-197.• Fix:

1-8 Figure 1-25. There is a debris screen over the cooling fan.Its presence is necessary to prevent the cool-ing fins

3-713a. Fix: Secure the input pulley using a hex bolt,lock washer, and flat washer.9. Does the input pulley rotate the input shaft?See Figure 3-201.a.

3-72NOTEPerform the Tiller Gear Case AssemblyRemoval and the Gear Case Separation sec-tions prior to performing the interior inspection.1. In

3-73311. Does the #50 chain rotate the 18T tine shaftassembly? See Figure 3-206.12. Does the 18T tine shaft assembly have exten-sive wear or damage?13

3-7411. Does the 9T tine input sprocket rotate the #50chain? See Figure 3-209.12. Does the #50 chain have extensive wear ordamage?13. Does the #50 cha

3-753a. Fix: Install a new spiral pin. 3. Is the V-belt too tight, binding up the input pul-ley?a. Fix: Perform the Clutch Cable Adjustment sec-tions.

3-76Interior Gear Case Assembly InspectionNOTEPerform the Tiller Gear Case AssemblyRemoval and the Gear Case Separation sec-tions prior to pe

3-7732. Remove both sets of hex nuts, lock washers,and flat washers securing the front counter-weight to the gear case assembly using a 3/4"

3-78NOTETwo self tapping screws on the right side andone on the left.8. Remove the hex bolt, bell washer, and hex nutsecuring the left rear corner of

3-79315. Remove and discard the zip tie securing theclutch control cable to the lower handle bar.16. Remove the T-knob, flat washer, and hexscrew from

3-8026. Remove the clevis pins and hair pins securingthe right and left tine assemblies. See Figure3-231.27. Remove both tine assemblies from th