68
11
TROUBLESHOOTING
ENOM01106-0
If you encounter a problem, consult the check list below to determine the cause and to
take the proper action.
An authorized dealer will always be happy to provide any assistance and information.
Engine failing to start
Engine starting but stoping soon
Poor idling
Poor acceleration
Engine speed abnormally high
Engine speed abnormally low
High engine speeds not possible
Overheating of engine
Possible cause
FUEL SYSTEMS
z
z
Empty fuel tank
z
z
z
z
z
z
z
Incorrect connection of fuel system
z
z
z
z
z
z
z
Air entering fuel line
z
z
z
z
z
z
z
Deformed or damaged fuel pipe
z
z
z
z
z
z
z
Closed air vent on fuel tank
z
z
z
z
z
z
z
Clogged fuel filter, fuel pump, or carburetor
z
z
z
z
z
Use of improper engine oil
z
z
z
z
z
Use of improper gasoline
z
z
z
z
z
z
Excessive oil in mixture
z
Shortage of oil in mixture
z
z
Excessive supply of fuel
z
z
z
z
z
z
z
Poor carburetor adjustment
z
z
z
z
z
z
Recirculation pipe broken
ELECTRIC SYSTEMS
z
z
z
z
z
z
z
Spark plug other than specified
z
z
z
z
z
z
Dirt, soot, etc. on spark plug
z
z
z
z
z
z
No Spark or weak spark
z
Short circuit of engine stop switch
z
z
z
z
z
Incorrect adjustment of ignition timing
z
Loose battery terminal connection, corrosion
EP and EF
types
z
Discharged battery
z
Main switch trouble
z
Lock plate not fitted to stop switch
z
Disconnection of wire or loose ground connection
z
Insufficient battery capacity, loose terminal
connection, corrosion
EP and EF
types
Summary of Contents for M 25H
Page 1: ... 2 Έ䗴 䢚 ...
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Page 3: ...OB No 003 11055 7AF1 M25H M30H MANUAL OWNER S ...
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Page 10: ...11 TROUBLESHOOTING 68 12 TOOL KIT AND SPARE PARTS 70 13 PROPELLER TABLE 71 ...
Page 20: ...18 4 LABEL LOCATIONS ENOM00019 A Warning label locations 4 1 2 3 7 8 6 5 ENOF01803 0 ...
Page 74: ...OWNER S MANUAL M 25H M 30H 003 11055 7AF1 1512NB Printed in Japan ...
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