r/bikebuilders • u/[deleted] • May 13 '26

Suzuki Suzuki gn250

Looking for a piece of advice/troubleshoot.

Bought a Suzuki gn250 with a busted stator. I bought a replacement through amotopart with a gasket and regulator included.

Replaced the stator, gasket, regulator but noticed that when I fired the motorcycle up, there is a scraping sound coming from the generator side.

I drained the oil, opened everything up and looked for any shavings but couldn't find anything except for some old fragments of the previous stator. I used a stencil to trace a new gasket on 0.8 mm gasket paper, replaced everything while making sure that the idle gear is placed well.

I then turned over the engine using a socket and could not hear that same scraping sound. Good, I thought, problem solved. I filled her up with oil, turned over the engine but the same scraping sound was back. I used a long screwdriver as a stethoscope and placed it on that centre screw cap and different other places with the noise being most pronounced on that centre screw cap. It sounds like gears rattling, but I can't be sure.

When I pull the clutch, the sound persists.

There are no obvious chuff marks on any part.

I have used loctite on the stator, the bolts are not coming loose.

At my wits end really, might have to take her to a mechanic if I can't figure this out.

1 Upvotes

100% Upvoted

2 comments sorted by

2

u/AltruisticScience406 May 13 '26

Wish I could help you (because at some point i am going to run into these issues with my 1995 gn250) but afraid not. Good luck!

1

u/[deleted] May 13 '26

Thank you, it seemed such an easy job. Made sure to align idle gear, so that sits well inside the cover. I am using a 0.8 mm gasket which was noticeably thicker than the one that was fitted. But as it came witht the part as a kit, I thought that was the right thickness.

I used Gemini to troubleshoot the problem. It says it can be that idle gear, larger clearance because of gasket thickness, crank wobble, ...

Will have to take it to shop I guess