Checking The Camshaft - Yamaha F2.5A Service Manual

POWR
4. Tighten the connecting rod bolts 2 to the
specified torques in two stages.
NOTE:
• Reuse the removed connecting rod bolts
when checking the oil clearance.
• Do not turn the connecting rod until the
crankpin oil clearance measurement has
been completed.
Connecting rod bolt:
1st: 5 N·m (0.5 kgf·m, 3.7 ft·lb)
2nd: 9 N·m (0.9 kgf·m, 6.6 ft·lb)
5. Remove the connecting rod cap and
measure the width of the compressed
Plastigauge (PG-1) on the crankpin.
Replace the connecting rod assembly or
crankshaft if out of specification.
Crankpin oil clearance:
0.016–0.046 mm
(0.0006–0.0018 in)

Checking the camshaft

1. Check the teeth of the camshaft gear for
damage or wear. Replace the camshaft if
necessary.
5-29
Power unit
2
S69M5640
2. Check the decompressor for damage or
wear. Replace the camshaft if necessary.
3. Measure the camshaft lobe. Replace if
out of specification.
Camshaft lobe a:
26.139–26.239 mm
(1.0290–1.0330 in)
Camshaft lobe b:
21.950–22.050 mm
(0.8642–0.8681 in)
S69M5710
S69M5720
69M3E11