0B-5 Maintenance and Lubrication:
5) Turn the crankshaft until the piston reaches TDC on
the compression stroke by slowly pulling the recoil
starter rope. Pull the recoil starter rope until the line
(4) on the generator rotor is aligned with the mark (5)
on the crankcase.
6) Remove the valve timing inspection caps (6).
7) Insert the thickness gauge to check the clearance
between the valve stem end and the adjusting screw
on the rocker arm.
Special tool
(A): 09900–20803 (Thickness gauge)
Valve clearance (When cold)
IN.: 0.05 – 0.10 mm (0.002 – 0.004 in)
EX.: 0.22 – 0.27 mm (0.009 – 0.011 in)
Adjustment
1) If the clearance is out of specification, bring it into the
specified range using the special tool.
Special tool
(A): 09917–14910 (Valve adjuster driver)
Tightening torque
Valve clearance adjuster lock-nut: 10 N·m (1.0
kgf-m, 7.0 lb-ft)
2) Install the removed parts.
Tightening torque
TDC plug: 23 N·m (2.3 kgf-m, 16.5 lb-ft)
Spark Plug Replacement
B827H10206004
Replace spark plug
Every 6 000 km (4 000 miles)
Refer to “Spark Plug Removal and Installation in Section
1H (Page 1H-3)”.
“A”: Adjusting screw “C”: Rocker arm
“B”: Lock-nut “D”: Valve stem
5
4
I827H1020002-01
6
I827H1020046-01
“C”
“D”
“A”
“B”
(A)
I827H1020003-02
(A)
I827H1020047-01
(A)
I827H1020048-01
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