Troy-Bilt 630B-Tuffy, 634F-Bronco, 634B-Super Bronco Bolo Tines, Maintenance, Tine Inspection

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18Section 5: Maintenance

WARNING

Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, disconnect spark plug wire and move wire away from spark plug.

Failure to follow these instructions can result in serious personal injury or property damage.

4.The gear oil level is correct if the gear oil is approximately halfway up the side of the main drive shaft.

5.If the gear oil level is low, add gear oil as described next. If the gear oil level is okay, securely replace the oil fill plug.

IMPORTANT: Do not operate the tiller if the gear oil level is low. Doing so will result in severe damage to the transmis- sion components.

B

A B

Figure 5-2: Remove oil fill plug (A) to check gear oil level and to add gear oil. Remove four cover screws (B) to drain gear oil.

6.If adding only a few ounces of gear oil, use API rated GL-4 or GL-5 gear oil having a viscosity of SAE 140, SAE 85W-140 or SAE 80W-90. If refilling an empty trans- mission, use only GL-4 gear oil having a viscosity of SAE 85W-140 or SAE 140.

IMPORTANT: Do not use automatic trans- mission fluid or motor oil in the transmis- sion.

7.While checking frequently to avoid

overfilling, slowly add gear oil into the oil fill hole until it reaches the halfway point on the drive shaft.

8.Securely replace the oil fill plug.

B. To Drain the Transmission Gear Oil:

The transmission gear oil does not need to be changed unless it has been contami- nated with dirt, sand or metal particles.

1.Drain gasoline from the fuel tank or run the engine until the fuel tank is empty. See “DANGER” statement below.

DANGER

Gasoline is highly flammable and its vapors are explosive. Follow these safety practices to prevent personal injury or property damage from fire or explosion.

Allow the engine and muffler to cool for at least two minutes before draining the tiller’s gasoline tank.

Do not allow open flames, sparks, matches or smoking in the area.

Wipe away spills and push tiller away from spilled fuel.

Use only an approved fuel container and store it safely out of the reach of children.

Do not store gasoline in an area where its vapors could reach an open flame or spark, or where ignition sources are present (such as hot water and space heaters, furnaces, clothes dryers, stoves, electric motors, etc.)

2.Drain the oil from the engine.

3.Remove four screws (B, Figure 5-2) and remove transmission cover and gasket.

4.Remove the left-side wheel.

5.Tilt the left-side wheel shaft into a drain pan and allow the gear oil to drain through the top of the transmission.

6.Reinstall the wheel.

7.Install a new gasket (do not reuse old gasket) and reinstall the transmission cover.

8.Refill the transmission using GL-4 gear oil (SAE 85W-140 or SAE 140).

9.Refill the engine with motor oil and replenish the fuel tank with gasoline.

BOLO TINES

The bolo tines will wear with use and should be inspected at the beginning of each tilling season and after every 30 operating hours. The tines can be replaced either individually or as a com- plete set. See the Parts List pages for tine identification and part numbers.

A. Tine Inspection:

With use, the tines will become shorter, narrower and pointed. Badly worn tines will result in a loss of tilling depth, and reduced effectiveness when chopping up and turning under organic matter.

B. Removing/Installing a Single Tine:

1.With the engine shut off and the spark plug wire disconnected, remove the two screws (A, Figure 5-3), lockwahers (E) and nuts (B) that attach a single tine to a tine holder. If needed, use penetrating oil on the nuts.

2.When installing a single tine, be sure to position it so that its cutting edge (sharp) will enter the soil first as the tiller moves forward.

C. Removing/Installing a Tine Assembly:

1.A tine assembly consists of eight tines mounted on a tine holder.

2.If removing both tine assemblies, mark them “left” and “right” before removal. Remove the screw (C, Figure 5-3), lock washer (E) and locknut (D) that secure the tine assembly to the tine shaft. If neces- sary, use a rubber mallet to tap the tine assembly outward off the shaft.

3.Before reinstalling the tine assembly, inspect the tine shaft for rust, rough spots or burrs. Lightly file or sand, as needed. Apply a thin coat of grease to the shaft.

4.Install each tine assembly so that the cutting (sharp) edge of the tines will enter the soil first when the tiller moves forward. Secure the tine assembly to the tine shaft using the screw and locknut previously removed.

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Contents Operator’s Manual Table of Contents Safety Alert Symbol Know how to stop the unit and disengage the controls quicklyKeep children and pets away SafetyExercise caution to avoid slipping or falling Use slower engine speedsDecals To Avoid Serious InjuryAssembly Steps IntroductionInspect Unit Clutch Cable Assembly Install Reverse Clutch Cable Models 634F and 634B onlyCheck AIR Pressure Check Level of Transmission Gear OILCheck all nuts and screws for tightness Engine Controls Wheel Drive PinsIntroduction Reverse Clutch Control Models 634F/634BForward Clutch Bail Features and ControlsHandlebar Height Adjustment Depth Regulator LeverStarting and Stopping the Engine Pre-Start ChecklistIntroduction BREAK-IN Operation Starting the EngineTines will cause injury Stopping the Engine and Tiller Operating the TillerOperation Stopping the Tiller and EngineClumps of soil that can interfere with Your freshly tilled or cultivated soilBy successive passes at one Quarter width see Fig Read the following recommendations before tilling on slopes Tilling Up and Down Slopes Vertical TillingTerrace Gardening Clearing the Tines Loading and Unloading the TillerTiller Lubrication Maintenance ScheduleTransmission Gear OIL Service Check for OIL LeaksRemoving/Installing a Tine Assembly MaintenanceRemoving/Installing a Single Tine Bolo TinesChecking and Adjusting Replacement Belt InformationTo Check Forward Belt Tension Checking and Adjusting Reverse Drive Belt Tension Forward Clutch Bail AdjustmentEngine Cleaning AIR Cleaner Service Engine OIL Service To Check Reverse Belt TensionCARBURETOR/GOVERNOR Control Adjustments Spark Plug ServiceSpark Arrester Screen Service OFF Season StorageOEM-290-256 fits Tuffy, OEM-290-254 fit Bronco TroubleshootingProblem Possible Cause Correction OEM-290-265 fits Tuffy, Bronco & Super BroncoParts List Drawing noPart Description Parts List Parts List Drawing no DRAWING/PARTS List noPart Description QTY For Model 630B GW-9727 24 3 1917326 Left Side Right Side Hold Tine With Blunt End Toward You50049-02 TROY-BILT Tiller Lifetime Limited Warranty