XT660Z engine knock

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DirtyTeNeReLess

Grey Hound
Joined
Aug 24, 2011
Messages
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Location
Pretoria!
Bike
Yamaha T7
Hi all, so a while back my engine started with a noise, it originates from the clutch/gearbox area. if i tether the clutch when its cold you can hear it clearly. my bike has 65-000ks on it and the clutch was on its last legs, so i figured it was something to do with that, so i ordered a clutch kit, friction plate and steel plates. seems as if that was not the issue. so while we were at it, lets split the case and have a looksy, Ive had the bike from 3000ks in 2011 so this is the first time that engine has been opened and it has taken a fair bit of usage over the years. so i was rather interested to have a look and get a state of affairs. it has recently started using oil and the compression is down a bit, to 7 and it should be 9??

all in all, i think pretty good, although metal shavings were found in the case and some damage to the gear selector (look at the red arrow in the pic below). something got in or broke off? but what? and is that damage to the selector the cause of the knocking noise? the solution right now is to replace the selector, the main shaft bearings, new rings, clean out the bearings and rebuild. budget has taken a beating.

can anyone offer some advice on the gear selector damage and cause? does it need to be replaced?

Thank you.

 

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