619-04013

MODELS 644H & 645A

6 7

9	11*
8	10
	10

					12		13
			10		3		13
			10		3
					14
			*	Included with transmission when purchased as an assembly only.
				Remove and discard when installing the transmission on tiller.

REF	PART NO.	DESCRIPTION	REF	PART NO.		DESCRIPTION
NO.	PART NO.	DESCRIPTION	NO.	PART NO.		DESCRIPTION
NO.			NO.

1	GW-9727	Plug, Transmission Oil Fill	8	721-04031		Oil Seal, Wheel Shaft
2	710-04049	Hex Hd. Flange Screw, 5/16-18 x 5/8,Gr. 5	9	619-04013		Transmission Housing Assembly
3	736-0119	Lock Washer, 5/16	10	721-04036		Oil Seal, Tine Shaft
4	1918377	Rear Cover, Transmission	11	736-3008*		Washer, Flat, .344 x .750 x .120
5	1916641	Front Cover, Transmission	12	718-04008		Rear Bearing Cap
6	GW-50032	Gasket, Housing Cover	13	710-04048		Hex Hd. Flange Screw, 5/16-18 x 1
7	721-04030	Oil Seal, Drive Shaft	14	710-3008		Hex Hd. Flange Screw, 5/16-18 x 3/4

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Image 32

Contents

Operator’s Manual Table of Contents Finding Model NumberEngine Information Calling Customer Support Safety Training Never operate the tiller under Use a deep depth regulator setting Use slower engine speedsKeep children and pets away Operating Symbols Decals Assembly Tools/Materials Needed for AssemblyLoose Parts List Qty. Description Introduction Attach Handlebar Move Tiller Off Shipping Platform Install Forward Clutch Cable Install Reverse Clutch Cable Check Level Transmission Gear Oil Check Hardware for TightnessCheck Air Pressure in Tires Tiller is shipped without oil in the engine Features and Controls Wheel Drive Pins Forward Clutch Bail Reverse Clutch ControlTo Operate the Forward Clutch Bail To Operate the Reverse Clutch Control Handlebar Height Adjustment Shallow Settings DeepTo Adjust the Handlebars Depth Regulator Lever Operation IntroductionInitial Operation Starting and Stopping the Engine Use the Fast throttle speed setting when tilling Operating the TillerStarting the Engine Stopping the Engine and Tiller Stopping the Tiller and Engine Turning the Tiller AroundFor reverse motion of the wheels and tines Let the tiller do the work Tilling depthsAvoid tilling soggy, wet soil Avoid making footprints Tilling across slopes without using terraces Clearing the tinesTilling on slopes Tilling up and down slopes Loading and Unloading the Tiller Maintenance Required Maintenance ScheduleEvery Hours Transmission Gear OIL Service Tiller LubricationCheck for OIL Leaks Check Hardware Removing and Installing Tine Assemblies Removing and Installing Individual TinesTines Tine Inspection Position To Check Forward Belt Tension To Check Reverse Belt Tension Forward Clutch Bail AdjustmentReverse Belt Replacement Information Engine OIL Service AIR Cleaner 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 Tiller Lifetime Limited Warranty TROY-BILT LLC, P.O. Box 361131, Cleveland, Ohio 44136-0019

Troy-Bilt 645A-Bronco manual 619-04013

Models: 645A-Bronco

MODELS 644H & 645A

DESCRIPTION