Adjusting The Valve Clearance - Yamaha F6AMH Service Manual

POWER UNIT

ADJUSTING THE VALVE CLEARANCE

NOTE:
Valve clearance adjustment shoule be
carried out when the engine is "cold".
1. Remove:
Recoil starter 1


Dust cover 2


Fuel pump 3


Cylinder head cover 4


2. Check:
Intake valve clearance


Exhaust valve clearance


Out of specification
Valve clearance (when engine is
cold)
Intake valve
0.15 – 0.20 mm (0.006 – 0.008 in)
Exhaust valve
0.20 – 0.25 mm (0.008 – 0.010 in)
Checking steps:
(1)Turn the crankshaft and align the "∆1"
mark on the driven gear
mark on the thermostat cover 6.
(2)Check the intake valve clearance
and exhaust valve clearance
cylinder #1 using the feeler gauge
(3)Turn the crankshaft 360° and align the
"∆2" mark on the driven gear 5 and
"∆" mark on the thermostat cover 6.
(4)Check the intake valve clearance
and exhaust valve clearance
cylinder #2 using the feeler gauge 7.
3-15
a
b
Adjust.

a
:
b
:
5
and "∆"
a
b
on the
7
a
b
on the
.