Adjusting The Valve Clearance - Yamaha FZ6RC Service Manual

9. Connect:
Spark plug caps
G
10.Install:
Rubber cover
G
Refer to "AIR INDUCTION SYSTEM" on
page 7-11.
Air filter case
G
Refer to "GENERAL CHASSIS" on page 4-1.
Fuel tank
G
Refer to "FUEL TANK" on page 7-1.
Passenger seat/Rider seat
G
Refer to "GENERAL CHASSIS" on page 4-1.
EAS20490

ADJUSTING THE VALVE CLEARANCE

The following procedure applies to all of the
valves.
TIP
Valve clearance adjustment should be made
G
on a cold engine, at room temperature.
When the valve clearance is to be measured or
G
adjusted, the piston must be at top dead center
(TDC) on the compression stroke.
1. Remove:
Passenger seat/Rider seat
G
Refer to "GENERAL CHASSIS" on page 4-1.
Fuel tank
G
Refer to "FUEL TANK" on page 7-1.
Air filter case
G
Refer to "GENERAL CHASSIS" on page 4-1.
Throttle bodies
G
Refer to "THROTTLE BODIES" on page 7-4.
Air cut-off valve
G
Rubber cover
G
Refer to "AIR INDUCTION SYSTEM" on
page 7-11.
2. Remove:
Spark plug caps
G
Spark plugs
G
Throttle body
G
Refer to "THROTTLE BODIES" on page 7-4.
Cylinder head cover
G
Cylinder head cover gasket
G
Refer to "CAMSHAFTS" on page 5-8.
3. Remove:
Pickup rotor cover "1"
G
Gasket
G
PERIODIC MAINTENANCE
4. Measure:
Valve clearance
G
Out of specification → Adjust.
Valve clearance (cold)
Intake
0.13–0.20 mm (0.0051–0.0079 in)
Exhaust
0.23–0.30 mm (0.0091–0.0118 in)
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM
a. Turn the crankshaft counterclockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the TDC mark "a" on the
pickup rotor with the crankcase mating sur-
face "b".
TIP
TDC on the compression stroke can be found
when the camshaft lobes are turned away from
each other.
c. Measure the valve clearance with a thickness
gauge "1".
TIP
If the valve clearance is incorrect, record the
G
measured reading.
Measure the valve clearance in the following
G
sequence.
Valve clearance measuring sequence
Cylinder #1 → → → → #2 → → → → #4 → → → → #3
3-5