Yamaha F15B Service Manual page 64

POWR
5. Turn the flywheel clockwise and align the
"2" mark c on the driven sprocket with
the "M" mark b on the cylinder head.
cC
Do not turn the flywheel counter-clock-
wise, otherwise the valve system may be
damaged.
6. Check the intake and exhaust valve
clearance for cylinders #2. Adjust if nec-
essary.
d
#1
EX
#2
EX
NOTE:
Adjust the valve clearance when the engine
is cold.
5-5
Power unit
b
c
6D430115
e
6D450010
#1
IN
#2
IN
6D450080
Valve clearance:
Intake d:
0.15–0.25 mm (0.0059–0.0098 in)
Exhaust e:
0.20–0.30 mm (0.0079–0.0118 in)
7. Loosen the locknut 4, and then turn the
adjusting screw 5 until the specified
valve clearance is obtained.
NOTE:
9 To decrease the valve clearance, turn the
adjusting screw clockwise.
9 To increase the valve clearance, turn the
adjusting screw counterclockwise.
8. Tighten the locknut, and then check the
valve clearances. Adjust if necessary.
Locknut:
14 N·m (1.4 kgf·m, 10 ft·lb)
9. Install the cylinder head cover, fuel pump,
and spark plugs.
10. Connect the fuel hoses and spark plug
caps, and then install the manual starter
and timing belt cover.
4
5
6D450090
6D45F11