2011 Yamaha YZFR1000AR Service Repair Manual

Page 117

PERIODIC MAINTENANCE

d. Measure the valve clearance #1 with a thickness gauge “1”.

h. Measure the valve clearance #2 and #4 with a thickness gauge.

Thickness gauge 90890-03180 Feeler gauge set YU-26900-9

Thickness gauge 90890-03180 Feeler gauge set YU-26900-9 TIP

• If the valve clearance is incorrect, record the measured reading. • Measure the valve clearance in the following sequence. Valve clearance measuring sequence Cylinder #1 → #3 → #2 → #4

e. Turn the crankshaft 260 degrees in clockwise and align the pickup rotor I mark “a” and crankshaft position sensor I mark “b”.

A. Front ▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲

f.

5. Remove: • Camshafts

Measure the valve clearance #3 with a thickness gauge.

TIP

• Refer to “CAMSHAFTS” on page 5-13. • When removing the timing chain and camshafts, fasten the timing chain with a wire to retrieve it if it falls into the crankcase.

Thickness gauge 90890-03180 Feeler gauge set YU-26900-9

6. Adjust: • Valve clearance

g. Turn the crankshaft 205 degrees in clockwise and align the pickup rotor T mark “a” and crankshaft position sensor I mark “b”.

3-7


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