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When the valve guide is inserted, fix and adjust it
with a valve guide reamer.
Attention: When a reamer is used to cut, please apply
some amount of cutting lubricant onto it.
Rotate the reamer in clockwise direction.
Remove carbon deposited in combustion chamber
and valve and clean thoroughly intake and exhaust
valves.
Inspect width of contact surface of valve seat
(width of valve race)
Allowable limit: intake/exhaust: 1.6mm.
Valve Race Fixing and Adjustment
Remove hackly and ragged parts on the valve race
with a 45° angled milling cutter.
Note: Apply a layer of transparent or Prussian blue
film onto the valve race so that it can be observed
clearly.
Valve reamer
Valve seat contact
surface
Hackly part
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