STEP 6: CHECK TRANSMISSION OIL LEVEL

The transmission was filled with gear oil at the factory. However, you should check the gear oil level at this time to make certain it is correct.

IMPORTANT: Do not operate the tiller if the gear oil level is low. Doing so will result in severe damage to the transmission com- ponents.

1.With the tiller on level ground, pull the Depth Regulator Lever (FF, Fig. 2-10) back and then all the way up until the lowest notch in the lever is engaged.

2.Remove the oil fill plug (GG, Fig. 2-11) from the transmission housing cover and locate the main drive shaft situated inside the housing.

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

4.If the oil level is low, add gear oil by re- ferring to A. To Check the Transmission Gear Oil Level in Section 5.

FF

STEP 7: ADD MOTOR OIL

The tiller is shipped without oil in the en- gine.

IMPORTANT: Do not start the engine with- out first adding motor oil. Severe engine damage will result if the engine is run with- out oil.

1.Refer to the separate Engine Owner’s Manual for engine oil specifications and capacities.

2.With the tiller on level ground, move the Depth Regulator Lever (FF, Fig. 2-10) up or down until the engine is level.

3.Add motor oil as described in the En- gine Owner’s Manual.

4.Move the Depth Regulator Lever all the way down until the highest notch is en- gaged. This places the tines in the “travel” position, which allows the tiller to be moved without the tines touching the ground.

STEP 8: CHECK HARDWARE

Check all nuts and screws for tightness.

STEP 9: CHECK AIR PRESSURE IN TIRES (units with pneumatic tires)

Check the air pressure with a tire gauge. Deflate or inflate the tires equally to be- tween 15 PSI and 20 PSI (pounds per square inch). Be sure that both tires are in- flated equally or the unit will pull to one side.

Fig. 2-10: Adjust Depth Regulator Lever.

GG

Fig. 2-11: Remove gear oil fill plug.

IMPORTANT: This completes the assembly steps. Be- fore operating your tiller, make sure you read the follow- ing sections in this Manual, as well as the

separate Engine Owner’s Manual:

•Section 1: Safety

•Section 3: Features and Controls

•Section 4: Operation

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Troy-Bilt 643B Super Bronco manual Check Transmission OIL Level, Check all nuts and screws for tightness
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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.
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