Installation and Troubleshooting Guide
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QF-319
ENGINE WILL NOT STAY IN QUICKSTART OVER 10 SECONDS:
1.
Verify the engine temperature is below the trip point (89 degrees on some engines and 104 degrees on others) of the
temperature switch.
2.
Disconnect the White/Black Temperature Switch wire from the Port Temperature Switch. If the engine now stays in
Quick Start, the Temperature Switch is likely defective.
ENGINE STAYS IN QUICKSTART ON ALL CYLINDERS:
1.
With the engine idling, check the Yellow/Red wire for DC voltage. If there is DC voltage on this wire while the engine
is running, the Quick-Start will not disengage. A voltage of over 1.5 volts but less than 7 volts will not engage the
starter solenoid, yet will engage Quick-Start.
2.
Short the White/Black Temperature Switch wire FROM the power pack to engine ground. Start the engine, if the Quick
Start drops out after approximately 5 seconds, replace the White/Black Temperature Switch.
3.
Disconnect the Black/White wire from the power pack. If the Quick-Start feature is not now working, replace the power
pack.
ENGINE WILL NOT ENGAGE QUICKSTART:
1.
Disconnect the White/Black wire from the temperature sensor.
2.
With the engine idling, check the Black/White timer base wire for DC voltage. There should be about 6 to 12 volts DC
voltage on this wire while the engine is running for the Quick-Start to engage.
3.
Short the White/Black Temperature Switch wire FROM the power pack to engine ground. If the voltage on the
Black/White wire drops out after approximately 5 seconds but the engine timing does not change, replace the timer
base. If the voltage remains present, disconnect the Yellow/Red wire to the pack and repeat the test. If the voltage still
remains, replace the pack.
ENGINE ENGAGES S.L.O.W. (Limits at 2500 PM) WHEN THE NO OIL, LOW OIL OR FUEL VACUUM ALARM
SOUNDS:
1.
Disconnect engine harness.
2.
Disconnect the Tan wires from the temperature sensors in both cylinder heads.
3.
Using an VOM Meter, check the diode in the engine harness as follows:
Red Meter Lead
Black Meter Lead
Reading
Tan pin in Engine Harness Connector
Tan Lead From the Cyl Head
0.500 (approximately)
Tan Lead From the Cyl Head
Tan pin in Engine Harness Connector
OL or over 1.0
NOTE: You can replace the diode in the harness with a 1N4007 diode available at most electronics stores.
ENGINE DROPS OUT AND BACK IN QUICKSTART AT IDLE:
1.
Verify the spark plugs are the Champion QL77JC4 or QL78YC. These plugs are INDUCTIVE – NOT Resistive RF suppression.
2.
Check the engine RPM,
3.
With the engine idling, check the Yellow/Red wire for DC voltage. Intermittent DC voltage on this wire while the engine is running
will re-engage Quick-Start. A voltage of less than 7 volts will not engage the starter solenoid, yet will engage Quick-Start.
4.
With the engine idling, disconnect the Black/White wire from the power pack and short the White/Black Temperature Switch wire
FROM the power pack to engine ground. If the Quick Start drops out and stays out after approximately 5 seconds, replace the
White/Black Temperature Switch. If the problem is still present, replace the power pack.
