Yamaha XSR 900 2022 Service Manual page 92

1. Remove:
• Rider seat
• Side cover
Refer to "GENERAL CHASSIS (1)" on
page 4-1.
• Fuel tank cover
Refer to "GENERAL CHASSIS (4)" on
page 4-10.
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• Air filter case
Refer to "GENERAL CHASSIS (5)" on
page 4-11.
• Radiator cover
• Front side panel
Refer to "GENERAL CHASSIS (3)" on
page 4-8.
• Radiator
Refer to "RADIATOR" on page 6-3.
2. Remove:
• Ignition coil
• Spark plug
• Cylinder head cover
• Cylinder head cover gasket
Refer to "CAMSHAFTS" on page 5-16.
3. Remove:
• Timing mark accessing bolt "1"
• Crankshaft end cover "2"
1
4. Measure:
• Valve clearance
Out of specification → Adjust.
Valve clearance (cold)
Intake
0.11–0.20 mm (0.0043–0.0079
in)
Exhaust
0.28–0.32 mm (0.0110–0.0126
in)
TIP
TDC on the compression stroke can be found
when the camshaft lobes are turned away from
each other.
TIP
• If the valve clearance is incorrect, record the
2
• Measure the valve clearance in the following
3-6
PERIODIC MAINTENANCE
a. Turn the crankshaft counterclockwise.
b. When piston #1 is at TDC on the compres-
sion stroke, align the TDC mark "a" on the
generator rotor with the generator rotor cov-
er mark "b".
b
a
c. Measure the valve clearance with a thick-
ness gauge.
Thickness gauge
90890-03268
Feeler gauge set
YU-26900-9
measured reading.
sequence.
Valve clearance measuring sequence
Cylinder #1 → #2 → #3
G088882
A. Front
d. To measure the valve clearances of the
other cylinders, starting with cylinder #1 at
TDC, turn the crankshaft counterclockwise
as specified in the following table.