Honda NSA700A DN-1 2009, Руководство по обслуживанию

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CYLINDER HEAD/VALVE
U sin g a 60° cu tter, re m o v e th e b o tto m 1/4 o f th e old
seat.
TOOLS:
Interior cutter, 30 mm (IN) 07780-0014000
Interior cutter, 26 mm (EX) 07780-0014500
Cutter holder, 5.5 mm 07781-0010101
or equivalent com­
mercially available
U sin g a 4 5 ° seat c u tte r, cut th e seat to th e p ro p e r
w id th .
M a k e su re th a t all pitting a n d irre g u la ritie s are
re m o v e d .
NOTE:
• Excessive la p p in g pressure m a y d e fo rm o r d a m ­
a g e th e seat.
• C h a n g e th e a n g le o f lapping to o l fre q u e n tly to
p re v e n t u n e v e n seat w ear.
• L a pp ing c o m p o u n d can cause d a m a g e if it en ters
b e tw e e n th e v a lv e stem a n d g u id e .
A fte r cu ttin g th e seat, ap ply lap p in g c o m p o u n d to
th e v a lv e face, and la p the v a lv e u sing lig h t pres­
sure.
A fte r la p p in g , w a s h a n y residual c o m p o u n d o ff th e
c y lin d e r h ead and v alve.
Recheck the seat contact after lapping
LAPPIN G T O O L