Troubleshooting
Problem
Possible Cause
Corrective Action
1. The blade-control switch (PTO) is
engaged.
1. Move the blade-control switch (PTO)
to disengaged.
2. The parking brake is not engaged.
2. Engage the parking brake.
3. The drive levers are not in the
NEUTRAL
-
LOCK
position.
3. Ensure that the drive levers are in the
N
EUTRAL
-
LOCK
position.
4. The operator is not seated.
4. Sit on the seat.
5. The battery is dead.
5. Charge the battery.
6. The electrical connections are
corroded or loose.
6. Check the electrical connections for
good contact.
7. The fuse is blown.
7. Replace the fuse.
The starter does not crank.
8. The relay or switch is broken.
8. Contact an Authorized Service Dealer.
1. The fuel tank is empty.
1. Fill the fuel tank.
2. The oil level in the crankcase is low.
2. Add oil to the crankcase.
3. The throttle is not in the correct
position.
3. Be sure that the throttle control is
midway between the S
LOW
and F
AST
positions.
4. There is dirt in fuel filter.
4. Replace the fuel filter.
5. There is dirt, water, or stale fuel is in
the fuel system.
5. Contact an Authorized Service Dealer.
6. The air cleaner is dirty.
6. Clean or replace the air-cleaner
element.
7. The seat switch is not functioning
properly.
7. Check the seat switch indicator.
Replace the seat if needed.
8. The electrical connections are
corroded, loose or faulty.
8. Check the electrical connections for
good contact. Clean the connector
terminals thoroughly with electrical
contact cleaner, apply dielectric
grease, and connect.
The engine does not start, starts hard, or
fails to keep running.
9. The relay or switch is broken.
9. Contact an Authorized Service Dealer.
1. The engine load is excessive.
1. Reduce the ground speed.
2. The air cleaner is dirty.
2. Clean the air-cleaner element.
3. The oil level in the crankcase is low.
3. Add oil to the crankcase.
4. The cooling fins and air passages
above the engine are plugged.
4. Remove the obstruction from the
cooling fins and air passages.
5. The vent hole in the fuel cap is plugged.
5. Clean or replace the fuel cap.
6. There is dirt in the fuel filter.
6. Replace the fuel filter.
The engine loses power.
7. There is dirt, water, or stale fuel is in
the fuel system.
7. Contact an Authorized Service Dealer.
1. The engine load is excessive.
1. Reduce the ground speed.
2. The oil level in the crankcase is low.
2. Add oil to the crankcase.
The engine overheats.
3. The cooling fins and air passages
above the engine are plugged.
3. Remove the obstruction from the
cooling fins and air passages.
1. The by pass valves are not closed
tight.
1. Tighten the by pass valves.
2. The pump belt is worn, loose or broken.
2. Change the belt.
3. The pump belt is off a pulley.
3. Change the belt.
4. The idler spring is broken or missing.
4. Replace the spring.
The machine does not drive.
5. The hydraulic-fluid level is low or too
hot.
5. Add hydraulic fluid to reservoirs or let it
cool down.
66
Summary of Contents for Air Cool Z Master 74090
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