TROUBLE SHOOTING
Reduction of trouble begins with the performance of the prescribed maintenance actions. All
maintenance actions should be performed before using this procedure. See the Systems Diagram (Page
32) for a schematic presentation of machine operation.
Symptom: The engine will not start
Check:
1. The On-Off Control setting could be out of adjustment preventing starting air from reaching the
engine. See the section on ADJUSTING THE ON-OFF CONTROL.
2. The machine could be out of gasoline or have very old and stale gasoline in the Fuel Tank. Use
only fresh gasoline with Dyna-Fog® Fuel Stabilizer.
3. The Fuel Filter could be clogged.
4. Examine the starting air line to see if it is securely connected to the antechamber. Air should be
pumped through the line when the air switch is pressed.
5. The spark plug may be weak or intermittent. If the spark plug is soaked with gas then the
machine is flooded. Is the electrode gap correct? Refer to the MAINTENANCE section.
6. Remove the spark plug to see if gasoline reaches the spark plug. If the spark plug is not wet, then
gasoline is not reaching the spark plug.
Symptom: There is no spark when the Ignition Switch is pressed.
Check:
1. The batteries may be too weak. Remember, batteries will go dead over a period of time whether
they are used or not used.
2. Examine the wiring for loose connections. Is the spark plug boot firmly attached? Make sure the
batteries are connected properly.
3. If the Ignition Switch begins to go bad, it may work in some positions but not in others.
4. After 1, 2 and 3 are tried, then the only possible remaining source of problems is the Ignition Coil.
However, recheck the above before replacing the Ignition Coil.
Symptom: Gasoline does not reach the Antechamber.
Check:
1. The Primer Blub lines for leaks. By removing the air filter top cover, fuel should be visible when
the primer is depressed.
2. The Fuel Filter may be clogged.
3. The Fuel Needle may be closed.
4. The machine may be out of gasoline.
5. The On-Off Control may not be properly located for starting the machine.
6. The Inlet Needle Valve may be stuck in its seat. This frequently occurs when stale gasoline is
used, or when the machine is left setting for long periods of time. To solve this problem the Metering
Diaphragm Cover and Metering Diaphragm may have to be removed and the Inlet Needle Valve manually
broken loose. See the section on the CARBURETOR. Use Dyna-Fog® Fuel Stabilizer, to reduce these
types of problems.
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