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14. All Gasoline Models
A. Vapor lock may occur in high ambient temperatures: operate in ambients at less than 120°F; verify
proper installation to prevent air recirculation; correct as necessary.
B. Measure steady DC voltage at fuel pump while genset is cranking: repair wiring as necessary.
C. Try to start genset on shop fuel supply: verify tank level and fuel line condition in vehicle.
15. All Gasoline Carburetor Models
A. Verify carburetor altitude setting: readjust as necessary.
B. Verify choke operation, setting, linkage, vacuum pull off assembly and sustain valve: readjust, repair
or replace as necessary.
C. Measure fuel pump pressure/flow: replace fuel filter or fuel pump as necessary.
D. Inspect carburetor butterfly for binding: replace carburetor as necessary.
16. All Gasoline EFI Models
A. Inspect throttle body for binding or damage: replace as necessary.
B. Measure fuel pump pressure/flow: replace fuel filter, pressure regulator or fuel pump as necessary.
17. Propane Models
A. When ambient temperatures are less than 40°F vapor-withdrawal Propane tanks should be at least
half full to provide proper vaporization rate.
B. Propane having more than 2.5 percent Butane will not vaporize in ambients at less than 32°F; use
HD–5 grade Propane.
C. Measure steady DC voltage at fuel solenoid while genset is running; repair wiring as necessary.
D. Verify clear vent hose.
E. Run genset on shop fuel supply; verify tank level and fuel line condition in vehicle.
F. Check genset fuel lines for damage: replace fuel line as required.
G. Measure regulator lock off pressure.
18. Check governor, actuator, linkage and spring for debris, damage and looseness: readjust and repair as
necessary.
19. Verify that spark plug cables are secure on spark plugs: reconnect or replace as necessary.
20. Inspect ignition kill leads in harness and at connector P1: repair or replace lead, terminal or pins as neces-
sary.
21. Test Magnetos
A. Disconnect Connector P1.
B. Connect positive(+) meter lead to chassis ground.
C. HGJAA, D, E, F – Measure continuity to negative lead at pin P1–4 and P1–5: replace magnetos as
necessary.
D. HGJAB, C – Measure continuity to negative lead at pin P1–15 and P1–20: replace magnetos as nec-
essary.
22. Measure spark plug gap: set gap or replace spark plugs as necessary.
23. Verify ignition spark condition.
24. Inspect spark plug lead, kill lead terminal at magneto and measure magneto air gap: replace terminals,
set gap or replace magnetos as necessary.
25. Measure temperature of air intake and temperature rise across genset; remove blockage or prevent air
recirculation.
26. Dealers contact Distributor for technical support, Distributors contact factory for technical support.
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