22Section 5: Maintenance

WARNING

Before inspecting, cleaning or servicing the machine, shut off engine, wait for all moving parts to come to a complete stop, disconnect spark plug wire and move wire away from spark plug. Remove the key from the keyswitch on units so equipped.

Failure to follow these instructions can result in serious personal injury or property damage.

CAUTION

Incorrect cable adjustment could cause the wheels and tines to rotate unexpect- edly. Follow adjustment procedures carefully. Failure to do so could result in personal injury or property damage.

Checking Forward Belt Tension

1.Before checking, shut off engine, allow the engine and muffler to cool down, dis- connect the spark plug wire, remove the ignition key on electric start models.

2.The coiled part of the forward clutch spring (E, Figure 5-10) measures 2" in length when the Forward Clutch Control levers are not pulled up. Pull either Forward Clutch Control Lever up against the handlebar and measure the length of the coil on the forward clutch spring. Tension is correct if the length of the extended coil is 2-1/2" (see Figure 5-11). The forward clutch control cable needs adjustment if the extended length of the coil is not 2-1/2". See Adjusting the Forward Clutch Belt for a procedure.

Adjusting the Forward Clutch Cable

Do this procedure if the forward clutch spring measurement is not correct (see Checking Forward Belt Tension).

1.Before adjusting the belt, shut off

engine, allow the engine and muffler to cool down, disconnect the spark plug wire, and remove the ignition key on elec- tric start models.

B

AMore Belt Tension.

Figure 5-12: Move forward clutch cable adjuster down for more belt tension.

2.Belt adjustments are done with the

forward clutch cable adjuster (F, Figure 5- 10). Use two 1/2", open-end wrenches to loosen the two jam nuts (A, Figure 5-12) a few turns.

3.Move cable adjuster (B, Figure 5-12) downward for more belt tension (see Figure 5-12).

4.Hand tighten the jam nuts and pull the Forward Clutch Control levers up against the handlebar. Measure the spring coil (Figure 5-11). The extended length of the coil should be 2-1/2". Repeat this proce- dure until the extended spring length is correct.

5.Tighten both jam nuts securely.

Checking and Adjusting Reverse Clutch Belt Tension

Checking Reverse Clutch Belt Tension

The reverse clutch belt (D, Figure 5-9) needs adjustment if the belt slips in reverse or if there is no reverse. See Adjusting Reverse Clutch Belt below.

Adjusting Reverse Clutch Belt

1.Before adjusting the belt, shut off

engine, allow the engine and muffler to cool down, disconnect the spark plug wire, and remove the ignition key on elec- tric start models.

C

Figure 5-13: Belt cover.

2.Remove the two nuts (C, Figure 5-13) and remove the belt cover.

3.Reverse belt tension adjustments are done with the reverse clutch cable adjuster located on the left side of the machine near the engine (D, Figure 5-14). Use two 1/2" open-end wrenches to loosen the two adjuster jam nuts (E) a few turns.

 

E

D

F

 

Move cable

 

adjuster away

 

from pulleys to

 

increase reverse

 

belt tension.

Figure 5-14: Reverse clutch cable adjuster. Left-side view with belt cover removed.

4.Move the cable adjuster (D, Figure

5-14) away from the pulleys to increase belt tension.

5.Tighten both jam nuts securely.

6.Reinstall the belt cover.

7.Move the unit to an open area and test the reverse operation. Repeat this proce- dure if the unit does not respond when the reverse clutch is engaged.

FORWARD CLUTCH BELT REMOVAL AND REPLACEMENT

The forward clutch belt (K, Figure 5-15) engages the engine pulley (I) and the transmission pulley (J) when either Forward Clutch Control Lever is pulled up against the handlebar. This tightens the forward clutch cable (G) which causes the forward clutch idler pulley (H) to apply pressure to the forward clutch belt. This causes the pulleys to turn for Forward movement.

K I

J

G

H

Figure 5-15: Forward clutch control assembly.

Page 22
Image 22
Troy-Bilt 665B, 664D, E666M manual Checking Forward Belt Tension, Checking and Adjusting Reverse Clutch Belt Tension

E666M, 665B, 664D specifications

Troy-Bilt is a trusted name in outdoor power equipment, and their line of tillers, including the E666M, 664D, and 665B models, exemplifies their commitment to quality and practicality. These tillers are designed to make soil preparation easier and more efficient, catering to both amateur gardeners and seasoned landscapers alike.

The Troy-Bilt E666M is a robust machine tailored for ease of use and reliability. With a powerful engine, it delivers consistent performance, ensuring that users can tackle even the toughest soils. One of its standout features is the adjustable tilling width, which provides flexibility for various gardening needs. This tiller also boasts a Reverse Tillage feature, allowing the operator to break up stubborn soil with ease while enhancing control during operation.

The 664D model takes efficiency a step further with its durable construction and user-friendly design. This tiller is equipped with a dependable engine that provides ample power for deep soil cultivation. The 664D features self-propulsion technology, allowing users to maintain steady speed without exerting excessive effort. The adjustable depth settings further enhance soil penetration, making it possible to cultivate deep for extensive planting or surface till for lighter gardening tasks.

With the 665B, Troy-Bilt introduces advanced engineering for increased maneuverability and performance. This tiller features a patented belt-drive system that improves torque and ensures optimal power transfer to the tines. The 665B is also designed with comfort in mind, featuring ergonomic handles that reduce strain on the operator, making it ideal for longer gardening sessions. Its heavy-duty tines ensure exceptional soil mixing, while the adjustable tilling width and depth allow for customization according to specific gardening requirements.

All three tillers come equipped with Troy-Bilt's signature red oversized drag stake, enabling users to control tilling depth and improve stability during operation. They are designed with durable components that promise longevity and reliability, ensuring that they can withstand rigorous use season after season.

In summary, the Troy-Bilt E666M, 664D, and 665B tillers offer a variety of features and technologies that cater to every gardening need. With their reliable engines, user-friendly designs, and advanced tilling capabilities, these models embody the innovation and durability that Troy-Bilt is known for, making them excellent choices for anyone looking to elevate their gardening experience.