Post by johnfcbn44dx on Feb 18, 2022 17:14:51 GMT
From late in the CB250N kicker's production run, from engine number 2020148, the Cylinder Bolts fitted to the left, inboard, front (216mm) & rear (206mm) positions, 90081-414-000 & 90083-414-000 were substituted, with....
Part number 90087-414-000 / 90087-414-013 BOLT COMP B. CYLINDER 206mm (Engine Number >2020147).
Part number 90088-414-000 / 90088-414-013 BOLT COMP B. CYLINDER 216mm (Engine Number >2020147).
These bolts having rubber seals, which stopped oil coming out from slots introduced on the lower face of the barrel casting, from the chain tunnel to these two bolt position on the cylinder barrel casting base. For what purpose
, it is unknown, (but perhaps thought to cure early production run unrelated symptoms 
).
Part number 90087-414-000 / 90087-414-013 BOLT COMP B. CYLINDER 206mm (Engine Number >2020147).
Part number 90088-414-000 / 90088-414-013 BOLT COMP B. CYLINDER 216mm (Engine Number >2020147).
These bolts having rubber seals, which stopped oil coming out from slots introduced on the lower face of the barrel casting, from the chain tunnel to these two bolt position on the cylinder barrel casting base. For what purpose
, it is unknown, (but perhaps thought to cure early production run unrelated symptoms 
).
