Problem
Possible Cause
Corrective Action
1. By pass valves is not closed tight.
1. Tighten the by pass valves.
2. Pump belt is worn, loose or broken.
2. Change the belt.
3. Pump belt is off a pulley.
3. Change the belt.
4. Broken or missing idler spring.
4. Replace the spring.
Machine does not drive.
5. Hydraulic oil level is low or too hot.
5. Add hydraulic oil to reservoirs or let it
cool down.
1. Cutting blade(s) is/are bent or
unbalanced.
1. Install new cutting blade(s).
2. Blade mounting bolt is loose.
2. Tighten the blade mounting bolt.
3. Engine mounting bolts are loose.
3. Tighten the engine mounting bolts.
4. Loose engine pulley, idler pulley, or
blade pulley.
4. Tighten the appropriate pulley.
5. Engine pulley is damaged.
5. Contact an Authorized Service Dealer.
6. Blade spindle is bent.
6. Contact an Authorized Service Dealer.
Abnormal vibration.
7. Motor mount is loose or worn.
7. Contact an Authorized Service Dealer.
1. Blade(s) not sharp.
1. Sharpen the blade(s).
2. Cutting blade(s) is/are bent.
2. Install new cutting blade(s).
3. Mower deck is not level.
3. Level mower deck from side-to-side
and front-to-rear.
4. Underside of mower is dirty.
4. Clean the underside of the mower.
5. Tire pressure is not correct.
5. Adjust the tire pressure.
Uneven cutting height.
6. Blade spindle bent.
6. Contact an Authorized Service Dealer.
1. Mower deck belt is worn, loose or
broken.
1. Install new deck belt.
2. Mower deck belt is off pulley.
2. Install mower deck pulley and check
the idler pulley, idler arm and spring for
correct position and function.
3. Pump drive belt is worn, loose or
broken.
3. Check the belt tension or install new
belt.
Blades do not rotate.
4. Broken or missing idler spring.
4. Replace the spring.
1. Fuse is blown.
1. Replace fuse. Check coil resistance,
battery charge, charging system, and
wiring connections and replace if
necessary.
2. Low voltage supply at the clutch.
2. Check coil resistance, battery
charge, charging system, and wiring
connections and replace if necessary.
3. Damaged coil.
3. Replace clutch.
4. Inadequate current supply.
4. Repair or replace clutch lead wire or
electrical system. Clean connector
contacts.
Clutch will not engage.
5. Rotor/armature airgap is too large.
5. Remove shim or replace clutch.
1. Engine is too hot.
1. Turn engine off and let it cool.
2. Old gas in the gas tank.
2. Use new gas.
3. The fuel shut-off valve is not open
completely.
3. Open the fuel shut-off valve.
4. Air cleaner is dirty.
4. Make sure that the air cleaner and
precleaner are clean. Replace if
necessary.
5. Battery is not charged.
5. Charge or replace the battery.
6. Incorrect fuel filters used or dirty fuel
filters.
6. Contact an Authorized Service Dealer.
7. Connections to sensors electronic
control unit (ECU) and fuel injectors
are not secured properly.
7. Contact an Authorized Service Dealer.
Malfunction Indicator Light (MIL) comes
on.
67
Summary of Contents for 74926 Z Master G3
Page 70: ...Notes 70 ...
Page 71: ...Notes 71 ...