Operator’s Manual

Rear-tine Tiller Models

644H—BroncoTM

645A—BroncoTM

Model 644H Shown (bumper syles vary)

IMPORTANT:READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

Warning: 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 or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available by contacting the service department at Troy-Bilt LLC, P.O. Box 361131 Cleveland, Ohio 44136-0019.

TROY-BILT LLC, P.O. BOX 361131, CLEVELAND, OH 44136-0019

PRINTED IN USA	FROM NO. 769-00585A
	(01/2003)

Page 1

Image 1

Troy-Bilt 645A-Bronco manual Operator’s Manual

Contents

Operator’s Manual Finding Model Number Table of ContentsEngine Information Calling Customer Support Training Safety Keep children and pets away Use a deep depth regulator setting Use slower engine speedsNever operate the tiller under Decals Operating Symbols Tools/Materials Needed for Assembly AssemblyLoose Parts List Qty. Description Introduction Move Tiller Off Shipping Platform Attach Handlebar Install Reverse Clutch Cable Install Forward Clutch Cable Check Hardware for Tightness Check Level Transmission Gear OilCheck Air Pressure in Tires Tiller is shipped without oil in the engine Wheel Drive Pins Features and Controls Reverse Clutch Control Forward Clutch BailTo Operate the Forward Clutch Bail To Operate the Reverse Clutch Control Shallow Settings Deep Handlebar Height AdjustmentTo Adjust the Handlebars Depth Regulator Lever Introduction OperationInitial Operation Starting and Stopping the Engine Operating the Tiller Use the Fast throttle speed setting when tillingStarting the Engine Stopping the Engine and Tiller For reverse motion of the wheels and tines Turning the Tiller AroundStopping the Tiller and Engine Tilling depths Let the tiller do the workAvoid tilling soggy, wet soil Avoid making footprints Clearing the tines Tilling across slopes without using terracesTilling on slopes Tilling up and down slopes Loading and Unloading the Tiller Required Maintenance Schedule MaintenanceEvery Hours Tiller Lubrication Transmission Gear OIL ServiceCheck for OIL Leaks Check Hardware Removing and Installing Individual Tines Removing and Installing Tine AssembliesTines Tine Inspection To Check Forward Belt Tension Position Reverse Belt Replacement Information Forward Clutch Bail AdjustmentTo Check Reverse Belt Tension AIR Cleaner Service Engine OIL ServiceSpark Plug Service Engine Cleaning Troubleshooting Parts List Models 644H & 645A Models 644H & 645A Models 644H & 645A GW-1224-3 Front 619-04013 RIGHT-HAND Tine 2926 Models 644H & 645A TROY-BILT LLC, P.O. Box 361131, Cleveland, Ohio 44136-0019 TROY-BILT Tiller Lifetime Limited Warranty