I finally found the one that got away from me two years ago at Mid-Ohio...a 1970 G6S...rare little thing for the states, and fairly similar to the FS1 for those who are familiar.
my oil injection pump was shot from the get go, so i took a chance on one from ebay and it seems solid as can be. so today i removed the oil injection pump, and tried to install the new one, but it seems to get hung up on something about .125" away from sealing to the case. if i kick the bike over, i can see the gear turning, so i know the crank is engaging with the pump, at least to a certain extent, but no matter what i try i cant get it on there!
so then i thought, well, lets at least get the old one back on there. it doesnt go back on either....same thing: hangs up on something about .125 away from the case. well, dang it, i just took that one out, so i KNOW it can fit in there, and my new pump is identical to the old one, so what gives? the G6S-B manual i have covers absolutely nothing about removing or installing the oil pump. so, my question is the obvious one: whats the trick for getting these things back on the crank?
any help anyone can give is greatly appreciated. im not a fan of premixing gas on bikes that have the injection pump; id much rather everything work as designed. i mean, ill likely not restore this to showroom, but im a stickler for the mechanical bits being right. anyhow, thanks again to anyone with the magic knowledge i lack.