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I'm tearing into my 660 to re-ring it. I have a few questions. I'm following the service manual to the best of my ability (its a little confusing). I have the valve cover off, the timing chain tensioner off and the 2 bolts on the cam gear loose. The service manual says to fasten a safety wire to the timing chain. I understand the reason for this but where do I tie it to since I have to remove the cam gear still and will need to rotate the chain to get the other bolt out. I will also have to remove the cylinder and the chain will have to pass through that. Hopefully that makes sense.
I'm also wondering what the purpose of the cooling fan is? It seems to blow air through the tube and onto the muffler. Does it draw heat out or create some sort of vacuum or something? unless I am missing some ducting it seems pointless and maybe a waste of HP.
Thanks for any and all help and I'm sure I will have more questions as this job progresses. If anyone is interested I can take pics of the progress.
I'm also wondering what the purpose of the cooling fan is? It seems to blow air through the tube and onto the muffler. Does it draw heat out or create some sort of vacuum or something? unless I am missing some ducting it seems pointless and maybe a waste of HP.
Thanks for any and all help and I'm sure I will have more questions as this job progresses. If anyone is interested I can take pics of the progress.