Johnson PL4

48 - Maintenance
TROUBLE CHECK CHART
IMPORTANT: If you are unable to identify or solve the problem, contact your Dealer.
SYMPTOM POSSIBLE CAUSE
Starter motor will not operate
• Shift handle not in NEUTRAL.
• Battery and electrical connections loose or corroded.
• Fuse blown. Refer to Fuses.
• Battery Selector Switch OFF.
Engine will not start
• Not following starting instructions. Refer to Engine Starting Sec-
tion.
• Fuel tank empty.
• Fuel hose disconnected, kinked.
• Fuel system contaminated with water or dirt.
• Fuel filter obstructed.
• Engine flooded. Raise fast idle lever and crank engine in 10-sec-
ond periods.
• Spark plugs incorrect. Refer to Engine Specifications.
• Spark plugs improperly gapped, carboned, burned or wet.
• Fuse blown. Refer to Fuses.
• Ignition system component failure.
Engine will not idle properly
• Motor angle excessive.
• Spark plugs damaged or incorrect. Refer to Engine Specifica-
tions.
• Fuel system contaminated with water or dirt.
Engine loses power
• Spark plugs damaged or incorrect. Refer to Engine Specifica-
tions.
• Fuel filter obstructed.
• Fuel system contaminated with water or dirt.
• Water intakes obstructed and cooling system not operating cor-
rectly. Refer to Engine Overheating.
• Oil pressure very low. Refer to Low Oil Pressure Warning.
Engine vibrates excessively
• Propeller shaft bent.
• Propeller fouled and restricted, blades bent or broken.
• Fuel system contaminated with water or dirt.
• Engine mount(s) damaged.
•
S.L.O.W. protection mode activated. Refer to Engine Monitor-
ing.
Engine runs, but makes little or no
progress
• Propeller hub loose, slipping.
• Propeller blades bent or missing.
• Propeller shaft bent.
• Propeller fouled and restricted.
Warning System Activates
• Refer to Engine Monitoring.