Yamaha VMX12H Supplementary Service Manual page 16

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INSPECTION AND REPAIR
the bearings, crank pins and bear-
ing portions of the connecting rods.
the upper half of the bearing into
the connecting rod and lower half of the
bearing into the connecting rod cap.
NOTE:
Align the projection of the bearing with the
notch of the cap and connecting rod.
a piece of Plastigauge® on the crank
pin.
the connecting rod halves.
NOTE:
Do not move the connecting rod or crank-
shaft until the oil clearance measurement
has been completed.
Apply molybdenum disulfide grease to
the bolts, threads and nut seats.
Make sure the "Y" marks on the connect-
ing rods face the left side of the crank-
shaft.
Make sure that the letters on both compo-
nents align to from a perfect character.
the nuts.
Tighten to full torque specificationwithout
pausing. Apply continuous torque between
3.0 and 3.8
DO NOT STOP TIGHTENING until final
torque is reached. If tightening is inter-
rupted between 3.0 and 3.8
nut to less than 3.0
Remove the connecting rods and bear-
ings.
Measure the compressed Plastigauge®
width on each crank pin.
If oil clearance is out of specification,
select a replacement bearing.
- 9 -
(3.6 m kg, 25
Once you reach 3.0
loosen
and start again.
I