L

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. J

Remove the key from the keyswitch on units so equipped.

J

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

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

CheckingForwardBelt Tension

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

2.The coiled part of the forward clutch spring (E, Figure5-10) measures 2" in length when the Forward Clutch Control leversare not pulled up. Pull either ForwardClutch Control Lever up against the handlebarand measurethe length of the coil on the forward clutch spring. Tension is correct if the length of the extendedcoil is 2-1/2" (see Figure5-11). The forward clutch control cable needs adjustment if the extended length of the coil is not 2-1/2". See Adjusting the Forward Clutch Beltfor a procedure.

Adjustingthe ForwardClutchCable

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

1.Beforeadjusting the belt, shut off

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

A

Tension.

Figure5-12: Move forwardclutch cable adjuster down for more belt tension,

2. Belt adjustments aredone with the

forward clutch cable adjuster (F,Figure 5- 10). Usetwo 1/2", open-end wrenches to loosen the two jam nuts (A, Figure5-12) afew turns.

3.Move cable adjuster (B, Figure 5-12)

downward for more belt tension (see Figure 5-12).

4.Handtighten the jam nuts and pull the Forward Clutch Control leversup against the handlebar. Measurethe spring coil (Figure 5-11). The extendedlength of the coil should be 2-1/2". Repeatthis proce-

dure until the extendedspring length is correct.

5. Tighten both jam nuts securely.

Checking and AdjustingReverse ClutchBelt Tension

CheckingReverse ClutchBelt Tension

The reverseclutch belt (D, Figure 5-9) needsadjustment if the belt slips in reverseor if there is no reverse. See Adjusting ReverseClutch Belt below.

AdjustingReverse ClutchBelt

1.Beforeadjusting 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.

Figure5-13: Beltcover.

2.Removethe two nuts (C, Figure5-13) and removethe belt cover.

3.Reversebelt tension adjustments are donewith the reverseclutch cable

adjuster located on the left side of the machine nearthe engine (D, Figure 5-14). Usetwo 1/2" open-endwrenches to

loosen the two adjuster jam nuts (E) a few turns.

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

4.Move the cable adjuster (D, Figure

5-14) awayfrom the pulleys to increase belt tension.

5.Tighten both jam nuts securely.

6.Reinstall the belt cover.

7.Move the unit to an open areaand test the reverseoperation. Repeatthis proce- dure if the unit does not respond when the reverseclutch is engaged.

FORWARD CLUTCH BELT REMOVAL

AND REPLACEMENT

Theforward clutch belt (K, Figure 5-15) engagesthe 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 causesthe forward clutch idler pulley (H) to apply pressure to the forward clutch belt. This

causesthe pulleysto turn for Forward movement.

Figure5-15: Forwardclutchcontrol assembly.

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Troy-Bilt 664D, E666M Checking and AdjustingReverse ClutchBelt Tension, Loosen the two adjuster jam nuts E a few turns

E666M, 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.