Technical data

03-00-1
Section 03 TROUBLESHOOTING
TROUBLESHOOTING 0
The following is provided to help in diagnosing the probable source of troubles. It is a guideline and should
not be assumed to have all causes for all problems.
ENGINE WILL NOT START
NOTE : Watercraft equipped with the Digitally Encoded Security System, refer to ELECTRICAL
SYSTEM 08-06 for troubleshooting of problems related with this system.
OTHER OBSERVATION POSSIBLE CAUSE REMEDY
Engine does not turn over • Safety lanyard cap worn or removed
• Burnt 5 A fuse
• 5 A fuse keeps on burning
• Discharged battery
• Battery connections
• Water / fuel hydrolock)
• Starter
• Seized engine
• Seized jet pump
• Replace / reinstall
• Check wiring then replace fuse
• Check wiring, solenoid and MPEM
• Check / recharge
• Check / clean / tighten
• Check, refer to section 02-03
• Check, refer to section 08-04
• Check / repair as needed
• Check, refer to section 09-01
Engine turns slowly • Discharged / weak battery
• Restriction in jet pump
• Seizure in jet pump
• Partial engine hydrolock
• Partial engine seizure
• Worn starter
• Check / charge / replace
• Check / clean pump
• Inspect, refer to section 09-01
• Check, refer to section 02-03
• Check compression, refer to section 04-02
• Check, refer to section 08-04
Engine turns over
No spark at spark plugs
• Fuel water-contaminated
• Dirty fuel filter
• Fouled spark plugs
• Water in engine
• Carburetion
• Ignition
• Flooded engine
– Needle valve stuck open
• Excessive rotary valve clearance
• Internal engine damage
• Sheared flywheel key
• Incorrect rotary valve timing
• Faulty rev limiter
• Renew supply
• Clean / replace
• Replace
• Check, refer to section 02-03
• Check, refer to section 06-03
• Check, refer to section 08-02
• Check, refer to section 06-03
• Check, refer to section 04-04
• Check, refer to section 04-02 and 04-03
• Check timing mark, refer to section 08-02
• Check, refer to section 04-04
• Replace M.P.E.M. (587 and 717 engines) or
DC-CDI ignition module (787 engine)
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