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Servicing Your Honda
79
Valve Clearance
4.Rotate the generator flywheel
counterclockwise until the T mark (8) on the
flywheel lines up with the index mark (9) on
the left crankcase cover. In this position, the
piston may either be on the compression or
exhaust stroke.
The adjustment must be made when the piston
is at the top of the compression stroke when
both the intake and exhaust valves are closed.
This condition can be determined by moving
the rocker arms. If they are free, it is an
indication that the valves are closed and that the
piston is on the compression stroke. If they are
tight and the valves are open, rotate the
flywheel 360° and realign the T mark to the
index mark.
5.Check the clearance of both valves by
inserting a feeler gauge (10) between the
adjusting screw (11) and the valve stem.
Clearance should be:
Intake: 0.004 in (0.10 mm)
Exhaust: 0.004 in (0.10 mm)
(cont’d)
(8) T mark
(9) index mark
(10) feeler gauge
(11) adjusting screw
(12) adjusting screw lock nut
LEFT SIDE
(9)
(8)
(11)
(10)
(12)
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