B-5 gear kit for ES engines ONLY
B-5 crankshaft helical drive gear for SkyHawk Gt5A-ES and SuperRat-ES engines only.
WILL NOT FIT ANY OTHER ENGINES.
B-3 CCW Allen Head M8-1 screw is CCW rotation meaning it has left hand threads as is required for ES drill start engines.
All other engines have the standard CW right hand thread slot head M8-1 screws.
This kit includes a Star washer and Key.
Install the B3CCW screw with 272 Red Loctite in the blind hole crankshaft internal threads.