Yamaha VMX12H Supplementary Service Manual page 89

VALVE CLEARANCE ADJUSTMENT
TDC
180'
540'
360'
Crankshaft degree
Cylinder
*Measure the valve clearance, in sequence, for
Nor. and No.
Out of specification
Front
Firing Sequence:
1 - 3 - 4 - 2
2.
Adjust:
*Valve clearance
By the following adjustment steps.
Valve clearance adjustment steps:
the valve lifter slots (intake and
exhaust side) opposite each other.
*Install the Tappet Adjusting Tool
33961) onto the camshaft
*Turn the crankshaft until the lobe of the
tool depresses the valve lifters
Cylinder head
Pad
720'
110
2
cylinders.
Adjust clearance.
.
2-6