I need a bit of help here. I can't remember removing the collar that fits between the crankcase and the barrels and can't find it either.
collar (1l9) OEM Number: 90387-16547
O-ring (1l9) OEM Number: 93210-18322
It looks like that is where oil is pumped to the top end and kind of important. I am installing the 250cc barrels for inspection then will swap the 400cc barrels, gasket, etc. My 400cc conversion copper 2mm cylinder base gasket will probably mean I will have to make a longer collar anyway so my question is, should I replace the collar for the inspection or should it be ok for 30km of riding to and from the inspection?
Here is a pic of where it should go.
Thanks guys.