Sorry to bring up and old thread, but i know my chain is too slack as when i push it up at the centre of the bottom run inline with the end of the chain slider, it touches the chain slider on the bottom of the swingarm. Now i have a Haynes manual and the pic shows the guy pushing the chain up to measure the slack, but does everyone else push down and up on the chain to measure the slack? There should be 15-25mm of slack on NC30 i think? Is that 15 to 25mm play when the chain is just pushed up from where its resting? Or pushed down and up? so would you measure the bottom of the chain then the top of the chain doing that procedure?not trying to complicate things just wanting to see whats the correct method. Thanks

I always measure it sitting on the bike, so the suspension is compressed. You can reach down and feel the slack. No idea on the settings, i.e. measurement, I do it by feel and 22yrs of biking!

philfingers wrote:I always measure it sitting on the bike, so the suspension is compressed. You can reach down and feel the slack. No idea on the settings, i.e. measurement, I do it by feel and 22yrs of biking!

Alright cool, thanks for the advice mate. Do you push the chain up or down to check the slack?

I go from up to down and would say 25-30mm is what I set mine at. You can usually tell if it's too slack as you won't get such a smooth gear change. Too tight and you get an expensive bill for the output shaft bearing! Sorry I'm not being very helpful!

philfingers wrote:I go from up to down and would say 25-30mm is what I set mine at. You can usually tell if it's too slack as you won't get such a smooth gear change. Too tight and you get an expensive bill for the output shaft bearing! Sorry I'm not being very helpful!

Cheers mate, thanks again for you help