G-37
ZD25F, WSM
G GENERAL
Checking Mower Blade and Replacing Mower Blade
1. Check the cutting edge of mower blade.
2. Sharpen the cutting edges, if the mower blades are as shown in
figure (2).
3. Replace the mower blades, if they are as shown in figure (3).
NOTE
• To sharpen the mower blades by yourself, clamp the mower
blade securely in a vise and use a large mill file along the
original bevel.
• To balance the mower blade, place a small rod through the
center hole and check to see if the blade balances evenly.
File heavy side of the blade until it balance out even.
4. Tilt up the mower deck.
5. Wedge a wooden block securely between the mower blade and
mower deck or use a box wrench over the pulley nut to prevent
the spindle from rotating while removing the blade bolts; then
loosen the blade bolts.
6. Pass the spline boss through the blade (5) and 2 cup washers
(6), and tighten the bolt (8).
NOTE
• Make sure that the cup washer is not flattened out or worn;
this cause blade to slip excessively.
Replace the 2 cup washers if either is damaged.
W1022841
Replacing Mower Belt
1. Remove the mower deck from the machine.
2. Remove the left and right hand shield from the mower deck.
3. Clean around the gear box.
4. Remove the belt from the tension pulley.
5. Remove the right hand bracket which mounts the gear box to the
mower deck and slip the belt over the top of the gear box.
6. To install a new belt, reverse the above procedure.
W1069194
Bleeding Fuel System
Air must be removed:
1. When the fuel filter or lines are removed.
2. When tank is completely empty.
3. After the tractor has not been used for a long period of time.
Bleeding procedure is as follows:
1. Fill the fuel tank with fuel.
2. Turn the key switch to “ON” position for about 30 seconds.
Doing so allows fuel pump to work and pump air out of the fuel
system.
3. Start the engine and run for about 30 seconds, and then stop the
engine.
W1069400
(1) New Blade
(2) Worn Blade
(3) Cracked Blade
(4) Spindle Holder
(5) Blade
(6) 2 Cup Washers
(7) Lock Washer
(8) Bolt
(A) 30 mm (1-3/16 in.)
Tightening torque Bracket mounting screw
27.6 to 90.2 N·m
8.0 to 9.2 kgf·m
57.1 to 66.5 ft-lbs
(1) Tension Pulley
(2) Bracket (RH)
(3) Belt
(1) Fuel Pump
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