SOHC.co.uk Forums > CB500/550

cb550 neutral rattle! Is This Primary Chain Shot?

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philgresty:
Hey guys.
was riding today when by bike started making a loud ratcheting tick in neutral from the clutch/gearbox area, only in neutral though, as soon as shifted into 1st or 2nd it ceases completely.
sounds alot like when your kickstarter is pushed down after the engine is started, only quieter.
I pulled off the pan, there is no debris in it and no glitter in the oil.
Could it be the clutch needs replacing? seems odd to only make noise in neutral.

Whilst i had the pan off, i thought it may be the primary chain, upon inspection, there seems alot of play, if i push against it, it'll make contact with the case.
Is This Shot?
Im currently uploading a video to show you guys.

Am i best pulling out the engine to change the primary chain and see if i can find the cause of the clutch area noise?

https://youtu.be/8_DFhw43K4Q. VIDEO OF PRIMARY CHAIN HERE

Johnwebley:
check the carb balance,

  that can help

philgresty:
carbs were synced yesterday and are perfect, its a different kind of noise to the unbalanced one.
like a ratcheting click, and completely dissappears when shifted into gear, but not when i pull the clutch in

hairygit:
If the chain contacts the cases, it's knackered! Continue to run it at your own peril, you'll probably find the inside if the cases looking like they've been attacked by a chainsaw!

philgresty:
surely i can rule out the primary chain hitting the cases as being the noise? as it only does it in neutral.
Iv not heard any noise from it contacting the cases, only noticed it when i took the sump off to investigate.

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