Section 03 TROUBLESHOOTING
Subsection 01 (TROUBLESHOOTING CHART)
ENGINE RUNS TOO FAST (VEHICLE CANNOT REACH ITS TOP SPEED)
OTHER OBSERVATION POSSIBLE CAUSE REMEDY
Faulty rev limiter
Check, refer to ENGINE MANAGEMENT
Improper impeller pitch (too low)
Check/replace, refer to PROPULSION
SYSTEM
Incorrect throttle position sensor (TPS)
adjustment (
RFI models
)
Check and adjust TPS, refer to ENGINE
MANAGEMENT
Engine RPM too high
Damaged impeller
Replace impeller. Refer to PROPULSION
Damaged leading or trailing edge of
impeller
Check/replace
NOTE:
Leading edge damage contributes
to poor performance from start. Trailing
edge damage contributes to poor top
performance and stator vanes erosion.
Jet pump cavitation
Sealing of ride plate, jet pump support or
jet pump
Check/reseal, refer to section
PROPULSION SYSTEM or HULL/BODY
ENGINE OVERHEATS
OTHER OBSERVATION POSSIBLE CAUSE REMEDY
Coolant level low
Refill/check for leaks
Coolant leaking out of weep hole
(PTO housing)
Replace seal
Hoses or clamps missing/defective Repair/replace
Cylinder head gasket leaks
(white exhaust gas)
Replace cylinder head gasket
Thermostat failure Replace
Coolant pump failure
Replace
Coolant level too low
(
4-TEC models
)
Internal passage blockage Inspect and clean
Temperature sensor defective
Check/replace. Refer to ENGINE
MANAGEMENT
Worn water pump impeller
Check/replace
Cooling system restriction Check/flush, refer to MAINTENANCE
Damaged ride plate or hoses
(
4-TEC models
)
Check, refer to COOLING SYSTEM and
HULL/BODY
Grounded temperature sensor or sensor
wire (
carburetor models
)
Check/repair/replace
Monitoring beeper
sounds continuously
Thermostat defective (
4-TEC models
) Check/replace
58 smr2004-Complete Line Up
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