Hi, I recently purchased a 1989-90 GSF250 and on my first oil change I found bits of plastic in the oil and lots of sparkles . Dropped the oil pan and found orange curved plastic bits. I'm assuming it's the main cam chain guide. Would anyone know where to find one, or perhaps a guide from another model that can be made to work. I've scoured the web and come up short Thanks.
Those bits are the epoxy used to hold in the magnets on the flywheel - open up the LHS crankcase cover (stator) and you will see the remainder of whats left of the epoxy on the magnets..if your lucky the magnets will be intact, re epoxy to fix. If the magnets are cracked/broken then replace the flywheel. Repair can be done with a one piece magnet ring and insert if you want to fix it once and for all and not have it re occur..
Can chain guides are usually made from black plastic on this era of bikes, I'd suggest popping the stator cover off and checking for lost insulation
I'm about to go pop it apart and try to fix it. I found a little walk through with good pictures by someone who did it using jbweld. https://imgur.com/gallery/MfuD70m I'll let you know how it turns out. Thanks again for the help!
That is not a bad idea to plug between the magnets, but I would also put some type of adhesive between the magnets and the outer steel of the flywheel, glueing them in place as per original.
Hey everyone, Thanks for all the help! I ended up opting for regular jb weld as it's bond strength is a lot higher than the putty, and I was worried about chunks of the putty breaking off at high rpm's and throwing big chunks around. Well see how it holds up.
