Selecting The Crankshaft Main Bearing - Yamaha F200C Service Manual

9. Tighten the crankcase bolts to the speci-
fied torques in two stages and in the
sequence shown.
NOTE:
• Crankcase bolts 1–F can be reused five
times.
• Do not move the crankshaft until the main
journal oil clearance measurement has
been completed.
• Tighten crankcase bolts 1–F to the speci-
fied torques in two stages first, and then
tighten crankcase bolts G–S to the speci-
fied torques in two stages.
• Make a mark b on the crankcase and
crankcase bolts, and then tighten crank-
case bolts 1–F 90° from the mark.
1–8 Crankcase bolt (M8):
1st: 25 N·m (2.5 kgf·m, 18 ft·lb)
2nd: 90°
9–F Crankcase bolt (M10):
1st: 40 N·m (4.0 kgf·m, 29 ft·lb)
2nd: 90°
Crankcase bolt (M8):
1st: 14 N·m (1.4 kgf·m, 10 ft·lb)
2nd: 28 N·m (2.8 kgf·m, 20 ft·lb)
69J1D11
10. Remove the crankcase and measure the
width of the compressed Plastigauge
(PG-1) on each main journal. Replace
the main bearing if out of specification.
Crankshaft main journal oil
clearance:
0.025–0.050 mm
(0.0010–0.0020 in)
Selecting the crankshaft main
bearing
1. When replacing the main bearing, select
the suitable bearing as follows.
2. Check the crankshaft journal mark a on
the crankshaft and the cylinder block
mark b on the cylinder block.
Cylinder block
5-54
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2
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