23
Installing the Spark Plug
1. Install the spark plug and metal washer. Make sure that
the air gap is set correctly.
2. Tighten the spark plug to 15 ft.-lb. (20 N⋅m).
3. Connect the wire to the spark plug (Fig. 20).
4. Close the hood.
Cleaning the Cooling System
Use a dry brush to clean grass and accumulated debris from
the engine daily.
Important To prevent contamination of the fuel
system, do not use water to clean the engine.
Servicing the Brake
The brake is on the right side of the rear axle, inside the
rear tire (Fig. 22). If the brake does not hold securely or
stopping power is insufficient, an adjustment is required.
m-4981
1
2
0.015 in.
(0.38 mm)
Figure 22
1. Brake arm spring 2. Brake adjusting nut
Checking the Brake
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Remove the ignition key.
4. Move the drive control wire to the Push position; refer
to Pushing the Tractor Manually on page 16.
5. If the rear wheels lock and skid when you push the
tractor forward, you do not need to adjust the brake. If
the wheels turn and do not lock, adjust the brake; refer
to Adjusting the Brake on page 23.
Adjusting the Brake
1. Check the brake before you adjust it; refer to Checking
the Brake on page 23.
2. Remove the brake arm spring (Fig. 22).
3. Remove the cotter pin that secures the brake adjusting
nut and slightly loosen the nut (Fig. 22).
4. Insert a 0.015 in. (0.38 mm) feeler gauge between the
brake disc and the brake puck (Fig. 22).
5. Tighten the nut until you feel a slight resistance on the
feeler gauge when you slide it in and out.
6. Install a new cotter pin and attach the brake arm spring.
7. Check the brake operation again; refer to Checking the
Brake, page 23.
Important With the parking brake released, the rear
wheels should rotate freely when you push the tractor. If
you cannot set the 0.015 in. (0.38 mm) clearance and get
free wheel rotation, contact an Authorized Service Dealer
immediately.
Greasing and Lubricating the
Tractor
Grease the tractor after every 25 operating hours or once a
year, whichever occurs first. Grease more frequently when
operating conditions are extremely dusty or sandy.
Grease Type: General-purpose grease
How to Grease
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Clean the grease fittings with a rag.
4. Scrape any paint off of the front of the fittings.
5. Connect a grease gun to the fitting and pump grease
into the fittings.
6. Wipe up any excess grease.
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