Chaparral 2009 Signature 250, Owner'S/Operator'S Manual

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7-5
PROBLEM CAUSE SOLUTION
Rough running cont.
Engine overheating
Sludge in oil
5. Clogged fuel filter
6. Contaminated fuel
7. Kinked or clogged fuel lines, or fuel tank
vent line
8. Flame arrestor plugged with foreign
material; or air intake hose obstructed
1. Bad sending or receiving unit
2. Loose wiring connections at sending or
receiving unit
3. Worn or broken impeller in sea
water pump
4. Clogged oil cooler
5. Exhaust lines plugged
6. Ignition timing late
7. Choke valve stuck closed (carb only)
8. Collapsed water pump suction hose
9. Loose or worn belts
10. Restricted water intake
1. Infrequent oil changes
2. Dirty oil filter
3. Water in oil
5. Replace fuel filter.
6. Inspect fuel for water or other contami-
nants. If contaminated, drain tank and
flush with fresh fuel.
7. Use compressed air, at not more than
20 psi, to blow-out obstruction. Replace
line if kinked.
8. Clean flame arrestor and check hose.
1. Replace unit(s).
2. Tighten all connections.
3. Replace impeller.
4. Remove obstruction.
5. Remove obstruction.
6. Time engine.
7. Free choke valve movement.
8. Install new hose.
9. Adjust or replace belts as required.
10. Clean water intake.
1. Drain and refill with proper grade and
viscosity oil.
2. Replace oil filter.
3. Drain and refill. If trouble persists, check
for cracked block, or defective head gas-
ket and cracked head.
WARNING:
Wear protective eye wear
when performing compressed air cleaning.