Hi All,
I am currently in the process of cleaning and measuring all the gearbox parts of the CB250RSA engine. So far it's all pretty good with no undue wear although I'm installing a new cam chain, tensioner, refaced rockers and a NOS cam.
I am having trouble with the balance shaft chain in terms of measuring for wear. There's nothing in Mr Haynes manual regarding what is acceptable wear. I've clean the chain in degreaser and laid it out as in the photo. The chain length is 283mm (doubled up, it's endless) and it has a deflection of 25mm as shown. Is this acceptable, it doesn't have a hard life as it's inside the engine and covered in oil?