GENERAL INFORMATION
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flooded, do not perform this test. The spark tester
can ignite fuel ejected through the spark plug hole.
4. Shift the transmission into neutral.
WARNING
Do not hold the spark tester, spark plug or
connector or a serious electrical shock may result.
5. Turn the engine over using the starter and push the starter button. A fat blue spark must be evident
between the spark tester or spark plug terminals.
6. If there is a strong, blue spark, the ignition system is functioning properly, Check for one or more of
the following possible malfunctions:
a. Faulty fuel system component.
b. Flooded engine.
c. engine damage(low compression).
7. If the spark was weak (white or yellow) or if there was no spark, perform the peak voltage checks
described under Ignition System Testing.
8. Reinstall the fuel tank.
The Starter Cannot Work Repeatedly Or Can Only Work Slowly
Refer to Starting System Testing
POOR ENGINE PERFORMANCE
If the engine runs, but performance is unsatisfactory, refer to the following section that best
describes the symptoms.
The Engine Starts Slowly Or Difficultly
Check for the following:
1. Incorrect choke operation. This can be due to improper use or a stuck choke valve in the throttle.”
2. Incorrect hot start valve operation. This situation can be due to improper use or incorrect hot start
valve adjustment.
3. The fuel tank connection hose is clogged.
4. The fuel hose is clogged or the oil filter is clogged.
5. The injector is clogged.
NOTE
If a warm or hot engine will start with the choke on,
or if a cold engine starts and runs until the choke is
turned off. The pilot jet is probably plugged.
6. Contaminated or stale fuel.
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