this is how i do it, iam hopping it will work for you. take the ez-start gear train off the engine. take the housing apart, note there are lots of stuff in there so be carfull. draw a pic if you have to. the white gear that holds the owb is in two pieces. one has square notches that drop into the other half. there should be cushions 4 i think, that take up the shock loads. if yours are no good just cut some fuel line to fit. i dont put oil on the owb. i clean it in methanol. i found some teflon washer to go between the owb and the engine, to sling oil off the shaft. how ever i can not recommend it cause i havent got any time on that mod. if you do that mod be sure the shaft doesn't chew the washers up