user manual

2-5
SPEC
MAINTENANCE SPECIFICATIONS
Head Dia. Face Width Seat Width Margin Thickness
Model Standard Limit
Cam chain:
Cam chain type/No. of links
Cam chain adjustment method
79RH2015/156
Automatic
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Valve, valve seat, valve guide:
Valve clearance (cold) IN
EX
Valve dimensions:
0.11  0.15 mm
0.16  0.20 mm
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“A” head diameter IN
EX
“B” face width IN
EX
“C” seat width IN
EX
“D” margin thickness IN
EX
Stem outside diameter IN
EX
Guide inside diameter IN
EX
Stem-to-guide clearance IN
EX
Stem runout limit
28.9  29.1 mm
24.9  25.1 mm
1.98  2.55 mm
1.98  2.55 mm
0.9  1.1 mm
0.9  1.1 mm
0.8  1.2 mm
0.8  1.2 mm
5.475  5.490 mm
5.460  5.475 mm
5.500  5.512 mm
5.500  5.512 mm
0.010  0.037 mm
0.025  0.052 mm
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5.445 mm
5.43 mm
5.552 mm
5.552 mm
0.08 mm
0.1 mm
0.01 mm
Valve seat width IN
EX
0.9  1.1 mm
0.9  1.1 mm
1.6 mm
1.6 mm