never done it on a xt but have done it on plenty of other stuff -
1)split both chains
2)join one end of one to one end of the other - i use a small piece of welding rod carefully bent - whatever you use make sure its strong and "flush" so it won't snag
3)with cams out (no timing, don't want pistons hitting valves) get a mate to slowly turn over engine on crank nut (spark plug out) while you carefully and slowly feed the chain round - while you feed new chain in, feed out chain out. (take your time with this one...)
4)when both ends of new chain exposed, re-rivit, then time up and refit cams.
if you need to secure something for a while, use zip ties to hold it to the frame. a broom hangle or similar is useful for resting over the top of the engine to hold a complete chain up when there are no cams in..
It is quite a quick and easy job when you have the nack. but if you get it wrong, chances are you end up splitting the engine to retrieve what you've dropped down the camchain tunnel!
hope it helps
dan
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