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Discussion Starter #1
I have a 250es with timing chain noise. I have the valve cover and the right side case cover off. The timing chain tensioner was fully extended but the chain was still loose. The guides and sprockets show little wear, so I presume the timing chain needs replaced, but my manual does not have a procedure to check the timing chain. How do I determine if the chain is bad, and can the timing chain can be removed without pulling the head and cylinder? Thanks.
 

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I don't know if this goes for honda atvs but I know on the k20 and the k24 honda 4cyl engines they aren’t really a serviceable item. Not saying they can't be changed they never have to touch the chain b/c normally they last longer than the life of the engine.
 

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The chain has stretched, even though the gears only show a little wear. What year quad please so I can look at a schematic.
 

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Thanks for your response. The machine is a 1985 250 es Big Red. The timing chain is the silent type, not a roller type. The Clymer manual I have does not address replacement, so I'm thinking the chain does not normally require replacement.
 

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Discussion Starter #6
Timing chain

Thanks for the response. Please advise if the head and cylinder must be removed to replace the chain.
 
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