Yamaha 25BMH 30HMH Factory Service Manual, Page 84Get this manual
SPEC Item PISTON RING (2nd) Type (B) (T) End gap (installed) Limit Side clearance Limit CRANKSHAFT Crank width
MAINTENANCE SPECIFICATIONS
Unit Model 25BMH Barrel mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) (A) (B) (C) mm (in) mm (in) mm (in) 2.0 (0.079) 3.0 (0.118) 0.200.35 (0.00790.0137) 0.55 (0.022) 0.030.07 (0.0010.003) 0.07 (0.003) 56.9056.95 (2.24012.2421) 153.7154.0 (6.05126.0630) 39.940.1 (1.57091.5787) 30HMH
Worldwide
Runout limit (D) Side clearance (E) Maximum axial play (F) CONNECTING ROD Small end diameter CARBURETOR Main jet Main air jet Main nozzle Pilot jet Pilot air jet Pilot screw Valve seat size Float height (M.J (M.A.J (M.N (P .J (P .A.J (P .S (V.S