MAINTENANCE INSTRUCTIONS

SERVICING THE UNIT

Extreme care and knowledge of the system is required when servicing this unit. Service should be performed by qualified service personnel only. Replacement parts for this unit must be identical to the parts they replace. Refer any repair to an authorized service dealer.

INSPECTING/REPLACING THE DRIVE BELT

When servicing the unit, use only original equipment man- ufacturer replacement parts. Inspect the drive belt once a year or every 50 hours of operation, whichever comes first, for wear. If the drive belt needs to be replaced, use the fol- lowing instructions.

To avoid serious

WARNING: personal injury, turn off the unit and allow it to cool. Unplug the unit before you perform any mainte- nance.

1.Remove the 7 screws (A) from the belt case cover (B) using a #T20 torx bit or flat blade screwdriver. (Fig. 7)

2.Remove the flange lock nut (C) and remove the 3 screws (D) from the belt case cover (E) using a #T20 Torx bit or flat blade screwdriver. (Fig. 8)

3.Pull the belt tensioner (F) away from the drive pulley

(G). Remove the damaged or broken belt (H) from the driven pulley (I) and drive pulley inside of the housing. Discard appropriately. (Fig. 9)

4.Loop the new belt around the drive pulley and driven pulley (Fig. 8). Pull the belt tensioner (idler arm) away from the drive pulley to install the belt around the drive pulley.

NOTE: Make sure the washer is still in place on the driven pulley shaft prior to reinstalling the belt case cover.

5.Reinstall the flange lock nut. Torque the nut to 50-100 in• lb (90-11.2 N•m) and reinstall the 3 screws. Torque all screws to 18-23 in• lb (20-2.5 N•m).

6.Reinstall the cover with the 7 screws. To make instal- lation easier, place the narrow part of the cover into the recess of the housing. Install the top 2 screws, then push the rest of the cover down into the recess and over the rotor shaft. Toque all 7 screws to 18-23 in• lb (20-2.5 N•m)

NOTE: If the flange lock nut is damaged, do not replace it with a standard nut. Replace only with an original equip- ment manufacturer replacement part.

A x 7

B

Fig. 7

D

C

E

Fig. 8

F

G

IH

Fig. 9

10

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MTD 31A-020-900 manual Maintenance Instructions, Servicing the Unit, INSPECTING/REPLACING the Drive Belt
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31A-020-900 specifications

The MTD 31A-020-900 is a standout model in the realm of outdoor power equipment, specifically designed for homeowners seeking effective lawn care solutions. Known for its robust construction and user-friendly features, this machine has gained favor among gardening enthusiasts.

One of the key attributes of the MTD 31A-020-900 is its powerful engine. Equipped with a reliable gas engine, the unit provides enough power to tackle a variety of tasks, from mowing to mulching. This engine is designed not only for efficiency but also for fuel economy, minimizing the need for frequent refueling and allowing users to cover larger areas in one go.

The cutting deck of the MTD 31A-020-900 is another highlight. It features a wide cutting path that allows for quick mowing, significantly reducing the time required to maintain your lawn. Additionally, the adjustable cutting height gives users the flexibility to choose their preferred grass length, catering to different lawn types and seasonal requirements.

In terms of maneuverability, the MTD 31A-020-900 is designed with user comfort in mind. Its ergonomic handles and lightweight design make it easy to navigate around obstacles and tight spaces in the garden. The inclusion of large wheels further enhances its stability and performance on uneven terrain, ensuring a smooth mowing experience.

The machine also boasts advanced safety features, including a blade brake that stops the blades quickly when the user releases the throttle. This feature is particularly important for preventing accidents and ensuring that the mowing process is as safe as possible.

Moreover, the MTD 31A-020-900 is equipped with a reliable start system, making it easy for users to get started right away without unnecessary hassle. With its reliable ignition and smooth operation, both novice and experienced users can enjoy a seamless lawn care experience.

In conclusion, the MTD 31A-020-900 stands out as a powerful, efficient, and user-friendly lawn mower. Its strong engine, versatile cutting options, and focus on safety and ease of use make it an excellent choice for anyone looking to maintain a beautiful lawn with minimal effort. This machine is well-suited for residential applications, providing the reliability and performance that today's homeowners desire.
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