Service manual

ENGINE SPECIFICATIONS
SPEC 0*
Item
Standard
Limit
Valve springs
Free length
Intake 39.35mm(1.5492in) 37.38mm
(1.4717in)
Exhaust 41.57mm(1.6366in) 39.49mm
(1.5547in)
Installed length(valve closed)
Intake 28.0mm(1.1024in) …
Exhaust 30.0mm(1.1811in) …
Compressed spring force(installed)
Intake 91.1~104.9N
(9.3~10.7kg, 20.48~23.58lb)
…
Exhaust 107.9~124.1N
(11.0~12.7kg, 24.26~27.90lb)
…
Spring tilt
—»•
V///////////A
Intake … 2.5°/1.7mm
(2.5°/0.0669in)
Exhaust … 2.5°/1.8mm
(2.5°/0.0709in)
Winding direction(top view)
Intake Clockwise …
Exhaust
Clockwise
…
Valve seat reformed
Yes
…
Cylinder
Cylinder arrangement Forward inclined single cylinder …
Bore×stroke
38.0×43.5mm(1.496×1.713in) …
Compression ratio 12:1 …
Bore 38.000~38.010mm
(1.496~1.497in)
…
Maximum taper … 0.05mm
(0.0020in)
Maximum out-of-round … 0.05mm
(0.0020in)
2-7