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Crankshaft Main Journal Bushing Selection
Crankshaft 1 1 None None
Crankcase
None
None
Crankshaft Main Journal Bushing Brown Black Blue
Clearance (recommend) 10 ~ 34 µm 10 ~ 34 µm 10 ~ 34 µm
NOTE
Make the clearances between the crankshaft main journals within the prescribed
allowances. Excessive clearances will cause the oil pressure at the crankshaft main
journals to drop and lead to the damage of the bearing.
Connecting Rod Bolts
1. Original Connecting Rod
Use the original connecting bolts and nuts.
Make recesses at both ends of the original connecting rod bolt to measure its length and
determine the bolt stretch.
Connecting Rod : 13251 – 0019
Bolt : 92153 – 0491
92153 – 0809 (Spare Part : Attached Recess)
Nut : 92015 - 1311
Install the original bolts into the connecting rod.
Before every tightening, use a point micrometer to measure the length of the bolts and
record the values to find the bolt stretch.
Apply a small amount of molybdenum disulfide grease to the threads and seating
surfaces of nuts and bolts.
Tighten the big end nuts at the torque (reference torque) of 20 N·m (2.0 kgf·m, 14.5 ft·lb).
Check the length of the bolts and find the bolt stretch.
Bolt Length after tightening – Bolt Length before tightening = Stretch
Bolt Stretch
Usable Range: 0. 32 mm (0.0126 in.) target
Turn the big end nuts more until the bolt stretch reaches the usable range.
NOTE
Replace the original bolts with new ones if they have already been tightened up to
usable range 2 times.
Replace the bolts with new ones if they are used for the engine with a not clear feature.
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