Models 643B, 643C, 643D & 645A

MODELS 643B, 643C, 643D & 645A
		40		23
				23
				29
		45
				8
			19
			27
			14
	44
			13
		A
		26	36		12
		33			12
		33
48		28			46
		35			46
		35
	31	22		34	21
	30	22	37
	30		37		48
7				A	48
7	2	32	17	A
	2		17
42
42		15		23
				23

		27
		20	39
			39
		6
		26	5
3		1	5
3		1		23
	10			23
38	10
38	1
44	1
44	4
	4
16	18		MODEL 643C		22
	43				22
	43			33
	11			33
24	11			28
24	15		31	28
	15		31	35
37			30		37
37	9		2		37
			2		17

			42	26
			42	26	15
					15
			18		27
MODEL 643B & 643D		11	18	20
MODEL 643B & 643D		11	43	20
48	50	41
		41
			36
		32
		38		47
		6		47
		6
	49	3
		44
			28

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Troy-Bilt 643B Super Bronco manual Models 643B, 643C, 643D & 645A

643B Super Bronco specifications

The Troy-Bilt 643B Super Bronco represents a robust and versatile addition to the world of outdoor power equipment, designed with the needs of gardeners and landscapers in mind. This rear-tine tiller is a notable choice for those looking to cultivate their gardens efficiently and effectively.

One of the standout features of the Troy-Bilt 643B is its powerful 306cc OHV engine, which provides ample torque and ensures that the tiller can tackle tough soil conditions with ease. This engine is specifically designed for superior performance and reliability, allowing users to till effectively in a variety of soil types, from sandy loam to clay.

The tiller boasts a 12-inch tilling width and a tilling depth of up to 8 inches, making it ideal for preparing garden beds and landscaping areas. The adjustable tilling depth allows gardeners to customize their cultivation process, enabling them to penetrate deeper for planting larger crops or more shallow for seedbed preparation.

Equipped with a rear-tine design, the Super Bronco brings several advantages. The rear-tine configuration provides better control and stability while working, making it easier to maneuver in tight spaces. Furthermore, the counter-rotating tines help to break up compact soil while reducing the chances of soil clumping, resulting in a finer tilled surface.

Another remarkable feature is the Troy-Bilt patented "Smart Till" technology, which allows users to select the most suitable tilling method for their specific soil conditions. This innovative technology enhances efficiency, saves time, and ensures that the tiller delivers optimal results with every pass.

For ease of use, the tiller is equipped with large, easy-grip controls and a comfortable handlebar design that reduces fatigue during extended use. Additionally, the rugged construction and all-terrain tires enable the Troy-Bilt 643B to navigate challenging landscapes without issue.

The maintenance of the Super Bronco is user-friendly, with features that facilitate easy access to essential components for tune-ups and repairs. Overall, the Troy-Bilt 643B Super Bronco combines power, technology, and practicality, making it an excellent choice for both novice and experienced gardeners seeking to enhance their outdoor projects.

Contents

Form no -02357A.fm 11/15/06 Finding Model Number Table of ContentsCustomer Support Safety Alert Symbol Do not put hands or feet near or under rotating parts Refer to the Maintenance sections Keep children and pets awayUse slower engine speeds Check all nuts, bolts, and screws for Maybeusedonthetillerandengine Operating SymbolsTo Avoid Serious Injury Assembly Assembly StepsIntroduction Inspect Unit Install Forward Clutch Cable Use the handlebar to roll the tiller to a flat area While preventing the cable adjuster from turning With the Forward Clutch Bail Y, Fig Check Transmission OIL Level Check all nuts and screws for tightness Ature package to identify the controls on your engine Freewheel Travel Position Shallow Settings To adjust the handlebarsTo operate the Forward Clutch Bail Stop all tiller motion by releasing the Forward Clutch Bail Following steps describe how to start and stop the engine Introduction BREAK-IN OperationStarting and Stopping Change engine oil For forward motion of the wheels and power to the tines Operating the TillerStopping the Engine and Tiller To move the Model 643C in reverse for short distances Tilling Tips & Techniques Tilling Tips & Techniques CON’T Tilling On SlopesClearing the Tines Read the following recommendations before tilling on slopes Loading and Unloading the Tiller Terrace Gardening Transmission Gear OIL Service Tiller LubricationCheck Hardware Check Tire Pressure Removing⁄Installing a Single Tine Removing⁄Installing a Tine AssemblyBolo Tines Tine Inspection Replacement Belt Information Checking and AdjustingTo Check Forward Belt Tension Forward Clutch Bail Adjustment Engine Cleaning AIR Cleaner Service Engine OIL ServiceModels 643B & 645A only To Check Reverse Belt Tension Spark Plug Service Spark Arrester Screen ServiceOFF-SEASON Storage To Change the Engine Oil Troubleshooting Problem Possible Cause CorrectionPage 643C, 643D 645A Models 643B, 643C, 643D & 645A Description GW-1224-3 Models 643B, 643C, 643D & 645A Models 643B, 643C, 643D & 645A 634-43203 Page Page TROY-BILT Tiller Lifetime Limited Warranty

643B Super Bronco specifications