Service Manual

PERIODIC MAINTENANCE 2-11
Periodic Maintenance Procedures
No.1 Cylinder
○
The left projection [A] on the flywheel is faced with the
right leg [B] on the #1 ignition coil [C] as shown in the
figure.
○
Check the inlet and exhaust valves are closed completely,
if not, turn the flywheel one turn (360°) clockwise and face
the left projection with the right leg again.
No.2 Cylinder
○
The left projection [A] on the flywheel is faced with the
right leg [B] on the #2 ignition coil [C] as shown in the
figure. Follow No.1 cylinder alignment.
•
Then check the valve clearance.
○
Using a thickness gauge [A], measure the valve clearance
between the rocker arm [B] and the valve stem end.
If the valve clearance is incorrect, adjust it.
Valve Clearance (when cold)
Inlet, Exhaust 0.05 ∼ 0.10 mm (0.0020 ∼ 0.0039 in.)
Valve Clearance Adjustment
•
Since valve repairs change the valve clearance, adjust
the valve clearance to the specified.
•
Turn the crankshaft in proper direction until the piston is at
the TDC of the compression stroke (as described above).
•
Loosen the locknut [A] and adjusting bolt [B].
•
Insert a 0.05 mm (0.0020 in.) thickness gauge [C] be-
tween the rocker arm and valve stem end, and turn the
adjusting bolt until the thickness gauge begins to bind be-
tween the rocker arm and valve stem end. Sweep the
thickness gauge during this adjustment.
Valve Clearance (when cold)
Inlet, Exhaust:
0.05 ∼ 0.10 mm (0.0020 ∼ 0.0039 in.)