Troubleshooting - Honda BF9.9A Owner's Manual

10.
TROUBLESHOOTING
Engine will not start:
1. Is the emergency stop switch clip in place?
2. Is the gearshift lever in neutral?
3. Is there fuel in the fuel tank?
4. Is the fuel cap vent knob turned to ON?
5. Is the fuel system primed by squeezing the primer bulb?
6. Is fuel reaching the carburetor?
Loosen the carburetor drain screw to see if there is fuel in the
carburetor float bowl.
If any fuel is spilled, make sure the area is dry before testing the spark
plug or starting the engine. Spilled fuel or fuel vapor may ignite.
7. Are the spark plugs firing?
Method of detecting spark
WRemove and inspect the spark plugs. Clean and dry the plugs, and
check the electrode gaps(P. 34).
Mlnstall the spark plugs in their caps, and ground.the side electrode
to any engine ground away from the spark plug. holes.
(3)Recoil starter type
Put the gearshift lever in the "NEUTRAL" position, pull the starter
grip hard, and check to see whether or not a spark appears across
the gap of the spark plug.
Starter motor type
Put the gear lever in the "NEUTRAL" position, rotate the starter
motor, and check to see whether or not a spark appears across the
gap of the spark plug.
If the spark plugs are OK, reinstall them, and try to start the engine.
If a spark does not appear, either replace the spark plug or contact
your authorized Honda outboard motor dealer.
Engine overheats:
1. Is the water intake screen clogged?
2. Is the thermostat faulty?
3. Is the water level correct?
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