TM 5-4310-368-14
General Safety Precautions
WARNING
Dry cleaning solvent, P-D-680, used to clean parts is potentially
dangerous to personnel and property. Avoid repeated and prolonged
skin contact. Do not use near open flame or excessive heat. Flash
point of solvent is 100 (38 ) - 138 (59 ).
F
C
F
C
a. Testing
(1)
Start engine. Run 5 minutes.
(2)
Move throttle switch to "High" position.
(3)
Check engine speed with stroboscopic tachometer. No-load speed should be about 2750 RPM. Full-load
should be about 2650 RPM.
(4)
Return engine to idle speed.
(5)
Stop engine.
b. Adjustment
(1)
If engine speeds are not within limits shown in paragraph a. above, adjust as follows:
(a)
Start engine. Run 5 minutes.
(b)
Engage clutch and move throttle switch to "High."
(c)
Check engine speed with stroboscopic tachometer.
(d)
Adjust tension nut as required to reach proper engine speed.
(e)
Return engine to idle speed. Disengage clutch.
(f)
Stop engine.
c.
Replacement and Repair
(1)
Disconnect tension spring and throttle link from governor arm.
(2)
Disconnect oil line from governor body fitting.
(3)
Remove four screws and lock washers.
(4)
Remove governor and gasket from engine.
(5)
Clean the governor with solvent. Dry thoroughly.
(6)
Examine governor housing for cracks and damaged sealing surfaces.
(7)
Examine drive gear for damage or wear. Replace if defective.
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