Troy-Bilt 644H-Bronco manual Safety, Keep children and pets away, Never operate the tiller under

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Section 1: Safety

7.Take all possible precautions when leaving the machine unattended. Stop the engine. Disconnect spark plug wire and move it away from the spark plug. Be sure both wheels are in the Wheel Drive position.

8.Before cleaning, repairing, or inspect- ing, stop the engine and make certain all moving parts have stopped. Disconnect the spark plug wire and prevent it from touching the spark plug to prevent acci- dental starting.

9.The flap on the tine hood must be down when operating the tiller.

10.Never use the tiller unless proper guards, plates, or other safety protective devices are in place.

11.Do not run engine in an enclosed area. Engine exhaust contains carbon monoxide gas, a deadly poison that is odorless, colorless, and tasteless.

12.Keep children and pets away.

13.Never operate the tiller under

engine power if the wheels are in the Freewheel position. In the Freewheel position, the wheels will not hold the tiller back and the revolving tines could propel the tiller rapidly, possibly causing loss of control. Always engage the wheels with the wheel drive pins in the Wheel Drive position before starting the engine or engaging the tines/wheels with the Forward Clutch Bail or the Reverse Clutch Control .

14.Be aware that the tiller may unexpect- edly bounce upward or jump backward and be propelled toward you if the tines should strike extremely hard packed soil, frozen ground, or buried obstacles like large stones, roots, or stumps. If in doubt about the tilling conditions, always use the following operating precautions to assist you in maintaining control of the tiller:

a.Walk behind and to one side of the tiller, using one hand on the han- dlebars. Relax your arm, but use a secure hand grip.

b.Use a deep depth regulator setting.

c.Use slower engine speeds.

d.Clear the tilling area of all large stones, roots and other debris.

e.Avoid using downward pressure on handlebars. If need be, use slight upward pressure to keep the tines from digging too deeply.

f.Before contacting hard packed soil at the end of a row, reduce engine speed and lift handlebars to raise tines out of the soil.

g.In an emergency, stop tines and wheels by releasing whichever clutch control is engaged. Do not attempt to restrain the tiller.

15.Do not overload the tiller’s capacity by attempting to till too deeply at too fast a rate.

16.Never operate the tiller at high

transport speeds on slippery surfaces. Look behind and use great care when backing up.

17.Do not operate the tiller on a slope that is too steep for safety. When on slopes, slow down and make sure you have good footing. Never permit the tiller to freewheel down slopes.

18.Never allow bystanders near the unit.

19.Only use attachments and acces-

sories that are approved by the manufac- turer of the tiller.

20.Use tiller attachments and acces- sories when recommended.

21.Never operate the tiller without good visibility or light.

22.Never operate the tiller if you are tired, or under the influence of alcohol, drugs or medication.

23.Operators shall not tamper with the engine-governor settings on the machine; the governor controls the maximum safe operating speed to protect the engine and all moving parts from damage caused by overspeed. Authorized service shall be sought if a problem exists.

24.Do not touch engine parts which may be hot from operation. Let parts cool down sufficiently.

25.Please remember: You can always stop the tines and wheels by releasing the Forward Clutch control or the Reverse Clutch control (whichever control you have engaged), or by moving the throttle control lever on the engine to “OFF” or “STOP”.

26.To load or unload the tiller, see the instructions in Section 4 of this Manual.

27.Use extreme caution when reversing or pulling the machine towards you.

28.Start the engine carefully according to instructions and with feet well away from the tines.

29.Never pick up or carry a machine while the engine is running.

Maintenance and Storage

1.Keep the tiller, attachments and acces- sories in safe working condition.

2.Check all nuts, bolts, and screws at frequent intervals for proper tightness to be sure the equipment is in safe working condition.

3.Never store the tiller with fuel in the fuel tank inside a building where ignition sources are present such as hot water and space heaters, furnaces, clothes dryers, stoves, electric motors, etc.). Allow engine to cool before storing in any enclosure.

4.To reduce the chances of a fire hazard, keep the engine free of grass, leaves, or excessive grease.

5.Store gasoline in a cool, well-ventilated area, safely away from any spark- or flame-producing equipment. Store gasoline in an approved container, safely away from the reach of children.

6.Refer to the Maintenance sections of this Manual and the separate Engine Owner’s Manual for instructions if the tiller is to be stored for an extended period.

7.Never perform maintenance while the engine is running or the spark plug wire is connected, except when specifically instructed to do so.

8.If the fuel tank has to be drained, do this outdoors.

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Contents Operator’s Manual Table of Contents Safety Ments or inspectionsSafety Use a deep depth regulator setting Use slower engine speedsKeep children and pets away Never operate the tiller underOperating Symbols DecalsAssembly Tools/Materials Needed for AssemblyLoose Parts List Qty. Description IntroductionAttach Handlebar AssemblyMove Tiller Off Shipping Platform Install Reverse Clutch Cable Install Forward Clutch CableCheck Level Transmission Gear Oil Check Hardware for TightnessCheck Air Pressure in Tires Tiller is shipped without oil in the engineFeatures and Controls Wheel Drive PinsForward Clutch Bail Depth Regulator Reverse Clutch Control Anti-Reverse StakeForward Clutch Bail Reverse Clutch ControlTo Operate the Forward Clutch Bail To Operate the Reverse Clutch ControlFeatures and Controls Handlebar Height AdjustmentDepth Regulator Lever Anti-Reverse StakeOperation IntroductionInitial Operation Starting and Stopping the EngineUse the Fast throttle speed setting when tilling OperationOperating the Tiller Starting the EngineFor reverse motion of the wheels and tines Turning the Tiller AroundStopping the Tiller and Engine Let the tiller do the work Tilling depthsAvoid tilling soggy, wet soil Avoid making footprintsTilling across slopes without using terraces Clearing the tinesTilling on slopes Tilling up and down slopesLoading and Unloading the Tiller Maintenance Required Maintenance ScheduleEvery HoursMaintenance Transmission Gear OIL ServiceTiller Lubrication Check for OIL LeaksRemoving and Installing Tine Assemblies Removing and Installing Individual TinesTines Tine InspectionPosition To Check Forward Belt TensionReverse Belt Replacement Information Forward Clutch Bail AdjustmentTo Check Reverse Belt Tension Engine OIL Service AIR Cleaner ServiceSpark Plug Service Engine CleaningTroubleshooting TROY-BILT Tiller Lifetime Limited Warranty TROY-BILT LLC, P.O. Box 361131, Cleveland, Ohio 44136-0019