1985-1986 Honda ATC250R Shop Manual, Page 117Get this manual
TRANSMISSIONCRANKSHAFT BALANCER
Measure the 0.0of the mainshaft and countershaft
SERVICE LIMIT:
M6 C1 C2 C4
24.94 mm 18.94 mm 23.94 mm 24.94 mm
(0.982 (0.746 (0.943 (0.982
in) in) in) in)