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ENGINE ADJUSTMENTS
VALVE CLEARANCE
It is routine maintenance to adjust the valve clearance after
the first fifty hours of operation. Valve clearance adjustment
must be performed when the engine is cool and the piston
must be the top dead center of the compression stroke.
Perform the following adjustment steps:
1. Remove the fuel pump and fuel filter from the cylinder
head cover. This assembly can be set aside without
disconnecting the hoses.
2. Remove the cylinder head cover ..
3. Remove the flywheel cover to access the flywheel and
driven pulley.
NOTE:
The governor sensor (mag pick-up) wires can be
disconnected
at
the sid of the control panel.
4.
Turn
the driven gear and align the '1 and 0" mark on the
driven pulley with the" V" mark on the cylinder head.
~hO:02
FLYWHEEl
5. Adjust the intake and exhaust valve clearance for
cylinder # I.
a. Loosen the lock nut.
b. Insert a feeler gauge between the valve end and the
adjusting screw.
c. Set the valve clearance by the adjusting screw.
VALVE CLEARANCE:
INTAKE: 0.13 - D.17mm (D.DDS - D.D07in)
E EXHAUST: 0.18 - D.22mm (0.007 - 0.009in)
d_ Tighten the lock nut.
e.
Again. check the valve clearance.
6_ Tum the driven gear and align the "2 and 0" mark on the
driven pulley with the " V" mark on the cylinder head.
EXHAUST
SIDE
ADJUSTING SCREW
FEELER GAUGE
VALVE #2
INTAKE
SIDE
7. Adjust the intake and exhaust valve clearance for cylinder
#2 using the same sequence.
NOTE:
When loosening and tightening the lock nut. hold
the adjusting screw with a valve clearance driver to pre
vent it from moving.
VALVE
CLEARANCE
DRIVER
----~-
TORQUE WRENCH
(PRE-SmING TYPE)
8. Install the cylinder head
COVet.
Apply sealant to the inside
rim of the cover as indicated by the shaded area of the
drawing.
BOLT TORQUE:
8 -10 Nm (0.8 -1.0 kg·m) S.8 -7.2Ib-ft
9. Install the flywheel cover and re-attach the sensor wires.
SEAL THIS AREA
WITH LOCTITE
BLACK SILICONE
Engines & Generators
42
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