Changing the Transmission Drive Belts

IMPORTANT: It is recommended that the PTO be readjusted after replacing the deck belt. Refer to PTO (POWER TAKE-OFF) ADJUSTMENT in the ADJUSTMENTS section of this manual for the proper procedure.

• Remount the belt guards removed earlier.

	42-Inch Deck	46-Inch Deck
PTO (Top) Belt	754-0472	754-0476
Bottom Belt	N/A	754-0349

CHANGING THE TRANSMISSION DRIVE BELT(S)

All belts on your tractor are subject to wear and should be replaced if any signs of cracking, shredding or rotting are present.

IMPORTANT: The V-belts found on your tractor are specially designed to engage and disengage safely. A substitute (non-OEM) V-belt can be dangerous by not disengaging completely. For a proper working machine, use factory approved belts.

To change or replace the drive belt(s) on your tractor, proceed as follows:

NOTE: It’s recommended that both drive belts be replaced at the same time.

•Remove the cutting deck as instructed earlier in this section.

•After disconnecting the battery cables, remove the battery and battery tray from beneath the seat.

IMPORTANT: When removing the battery, disconnect the NEGATIVE (Black) wire from it’s terminal first, followed by the POSITIVE (Red) wire. Re-install in reverse order.

Upper Drive Belt

•Locate the transmission idler pulley on the upper drive belt by looking through the battery tray opening. See Figure 16.

•Grasp the bracket and pivot the transmission idler pulley toward the rear of the tractor to release tension on the upper drive belt.

•Remove the belt from around the transmission idler pulley.

•Remove the upper drive belt from around the transmission pulley and the variable-speed pulley.

NOTE: Slowly rotate the pulley counterclockwise to roll the belt off of it.

•Remove the upper drive belt by pulling it up through the battery tray opening.

•Reroute the new upper drive belt as shown in Figure 16.

Lower Drive Belt

NOTE: Proper removal of the lower drive belt requires special tools and the removal of several tractor components. Read through the following procedure prior to attempting it to determine if you feel you could successfully complete it. If you don’t, see an authorized MTD service dealer to have the belt changed.

IMPORTANT: Note the routing of the lower drive belt around both the pulleys and the belt keepers BEFORE performing the following steps.

•Locate the variable-speed pulley by looking through the battery tray opening. See Figure 16.

•Remove the variable-speed pulley by loosening the hex bolt that affixes it to the transmission. Use a second wrench to hold the hex nut on the bottom side of the pulley.

•Slide the belt off of the variable-speed pulley as you lift the pulley up and out through the battery tray opening.

NOTE: Jacking the rear of the tractor up off the ground and securing it with jackstands at this point in the procedure will ease the following steps, but is not necessary.

604 specifications

The Troy-Bilt 604 is a versatile and reliable piece of equipment designed to meet the needs of homeowners and landscapers alike. Known for its robust performance and innovative features, this model stands out in the market for those requiring efficient yard maintenance.

One of the standout characteristics of the Troy-Bilt 604 is its powerful engine. Equipped with a reliable 4-cycle engine, it offers ample power for tackling various outdoor tasks, including cultivating, tilling, and soil preparation. This strong engine not only ensures performance but also translates into longevity, allowing users to depend on it for several seasons.

Another notable feature of the Troy-Bilt 604 is its patented front-tine design. This design provides excellent maneuverability in tight spaces, making it easier to work around garden beds and landscaping features. The adjustable tilling width is also a significant advantage, allowing users to switch between a narrow and wide tilling path based on their specific project needs. This flexibility helps optimize efficiency while minimizing time spent on each task.

The Troy-Bilt 604 incorporates advanced technologies that further enhance its functionality. For instance, the model is outfitted with easy-to-use controls, ensuring a user-friendly experience for both seasoned professionals and novice gardeners. The adjustable handlebars can be tailored to different heights, promoting comfort and reducing fatigue during operation.

Durability is a key attribute of the Troy-Bilt 604. Built with high-quality materials and reinforced components, this tiller is designed to withstand the rigors of frequent use in diverse environments. Users can have confidence in the machine's ability to handle tough soil conditions, as well as its resistance to wear and tear.

In addition to its impressive performance, the Troy-Bilt 604 is also designed with maintenance in mind. Features like easy-access air filters and oil drain ports simplify routine maintenance tasks, ensuring that the equipment runs smoothly for years to come.

Overall, the Troy-Bilt 604 combines power, versatility, and durability, making it an excellent choice for anyone looking to enhance their landscaping efforts. Whether you are preparing a new garden bed, tilling soil for planting, or maintaining an existing landscape, the Troy-Bilt 604 provides a reliable solution that meets various gardening needs with ease and efficiency.