Gear Box Noises?

mwiese_WA · 05-20-2020, 02:24 PM

Hey Gang,
Thanks for taking the time to read.
Just this morning I noticed new noise that take place ONLY when I am coasting (no load) while in gear, 1st and 2nd. I definitely seems to correspond with the travel speed and completely goes away when even slightly throttled. I keep the oil changed and valves adjusted. Chain is recently lubed and the bike shifting as good as ever.

Is this standard gear lash beginning to show or something else? Full disclosure, I have a slight oil leak on the top end just above the exhaust coming out of the cylinder head assembly. Also, there is a small amount 'fuzz' on the oil plug when I change the oil.

NzBrakelathes · 05-20-2020, 10:45 PM

Oil leak might just be head cap needs nipping up or replace the copper gaskets
Gearbox no noise normally - maybe output shaft bearing on the way out?

pyoungbl · 05-21-2020, 09:44 AM

What bike, how many miles? A bit of fuzzy swarf on the oil drain magnet is normal. When you change the oil make sure you take a close look at the two small strainers also. In your case I'd pull the one for the transmission just to see if there are any metal flakes caught in the strainer. Of course you do have the correct amount of slack in your chain!

Peter Y.

05-20-2020, 02:24 PM	#1
mwiese_WA Join Date: Jul 2018 Posts: 1	Gear Box Noises? Hey Gang, Thanks for taking the time to read. Just this morning I noticed new noise that take place ONLY when I am coasting (no load) while in gear, 1st and 2nd. I definitely seems to correspond with the travel speed and completely goes away when even slightly throttled. I keep the oil changed and valves adjusted. Chain is recently lubed and the bike shifting as good as ever. Is this standard gear lash beginning to show or something else? Full disclosure, I have a slight oil leak on the top end just above the exhaust coming out of the cylinder head assembly. Also, there is a small amount 'fuzz' on the oil plug when I change the oil.
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05-20-2020, 10:45 PM	#2
NzBrakelathes Join Date: Jun 2016 Location: Hell Posts: 2,408	Oil leak might just be head cap needs nipping up or replace the copper gaskets Gearbox no noise normally - maybe output shaft bearing on the way out?
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05-21-2020, 09:44 AM	#3
pyoungbl Join Date: Feb 2016 Location: Portsmouth, Virginia, USA Posts: 632	What bike, how many miles? A bit of fuzzy swarf on the oil drain magnet is normal. When you change the oil make sure you take a close look at the two small strainers also. In your case I'd pull the one for the transmission just to see if there are any metal flakes caught in the strainer. Of course you do have the correct amount of slack in your chain! Peter Y.
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