Check out
http://www.hodsonengineering.co.uk
For zxr 400 tunning and road bike engine repairs i think a few people have sent standard engines to be reparied and have had good results but you can also ring for advice if you ask nicely
Hope it helps as i just try to kill his engines but it dont happen dawn 400 engine is bullet proof
Top tuner and sound bloke but also well priced just needs engine
Hope that helps
Lawerence Hodson 9am-4pm 01732 463658
Simon Lowes #8
Engine rattle
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There isn't any real adjustment to be done.
The tensioner has a spring loaded ratchet arm that keeps pressure on the cam chain so you need to make sure that it still works. When you remove it should fully extend and in order to reset it you will need a vice (or similar) to compress it back down. If you can compress it buy hand the spring is knackered.
Worth noting that there is a ratchet on the extending arm which needs to be held in whilst you compress the spring.
If that’s working fine then check to see how far the tensioner extends when you put it back. If it fully extends (or as near as makes no difference) then the chain has had it and needs replacing.
The tensioner has a spring loaded ratchet arm that keeps pressure on the cam chain so you need to make sure that it still works. When you remove it should fully extend and in order to reset it you will need a vice (or similar) to compress it back down. If you can compress it buy hand the spring is knackered.
Worth noting that there is a ratchet on the extending arm which needs to be held in whilst you compress the spring.
If that’s working fine then check to see how far the tensioner extends when you put it back. If it fully extends (or as near as makes no difference) then the chain has had it and needs replacing.