Motive Power Industry Bugxter BR-150, Service Manual, Page: 31 / 75

ENGINE INSPECTION 2
•Cylinder head inspection
•Different view of
cylinder head
Engine
inspection
Description
IN/
EX
Standard
(mm)
Limit use
(mm)
Valve Clearance
(Before warm up)
IN 0.08
－
EX 0.08
－
Compression pressure
11kg/700rpm (BR150)
Height of the cam’s convex part
IN 26.625 26.23
EX
26.53 26.13
Inner diameter of rocker arm shaft
IN 10.00~10.015 10.10
EX 10.00~10.015 10.10
Outer diameter of rocker arm shaft
IN 9.972~9.987 9.91
EX 9.972~9.987 9.91
Valve base angle
IN&EX 1.0 1.8
Outer diameter of valve stem
IN 4.975~4.900 4.90
EX 4.955~4.970 4.90
Inner diameter of valve guide
IN 5.000~5.012 5.30
EX 5.000~5.012 5.30
Clearance between valve stem and
Valve guide
IN 0.010~0.037 0.08
Cylinder head data: