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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
Photo by George Guille, It's going to be a long 300km... Bolivian Amazon

I haven't been everywhere...
but it's on my list!


Photo by George Guille
It's going to be a long 300km...
Bolivian Amazon



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  #1  
Old 9 Aug 2007
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Valve Timing

According to my clymer manual, it is necessary to remove the flywheel to accurately set the crank in the correct position before replacing the cam sprocket, as I dont have access to a puller does anyone know of an alternative (but equally accurate) method?,
I'm thinking "if crank marking shows tdc why remove the flywheel, just use the T mark" guess there must be a reason! :confused1:
All advice greatfully received
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  #2  
Old 9 Aug 2007
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Hi

Hi Crunchy Nut,
When I have read similar things about my TT600R it was related to having the whole engine in bits - a complete rebuild basically.

For work on the top end alone it is just a case of setting the timing chain by reference to the timing marks that you mention; but you don't say what bike you have!! I suggest you explain as much as possible and then some one else on here will recognise better what you are describing.

In the meantime, welcome to this forum
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Old 10 Aug 2007
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Oops!

Thank you for the welcome and the speedy reply.
Bike is a 87 2kf 600xt.
I recently had to remove the head to repair a valve, guide and a hole in the head caused by a broken decompressor shaft end so this is only a top end rebuild, I was uncertain weather the timing mark on the crankshaft was actually tdc, like the `T` mark on the flywheel, or if it was unrelated only for timing the valves before the flywheel was put on.
Many thanks in advance for any advice
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  #4  
Old 10 Aug 2007
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T is for timing

So set the crankshaft at the T mark, it is at TDC then, as seen through the inspection hole at 11.00 from crankshaft center, then set the camshaft as per manual.

Auke
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  #5  
Old 30 Aug 2007
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Many thanks for the advice Dave and Auke, I guess I just lacked a bit of confidence, engine is now up and running and back to her old self, once again thanks a lot!
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  #6  
Old 31 Aug 2007
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Quote:
Originally Posted by Crunchy Nut View Post
Many thanks for the advice Dave and Auke, I guess I just lacked a bit of confidence, engine is now up and running and back to her old self, once again thanks a lot!

Excellent news Crunchy; now you can get on with riding!!
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