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#1
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dr400 valve timing
ihave rebuilt engine with new rings starts with afew kicks but has top end rattle under load ?could valve timming be a tooth or two out had difficulty finding a manual i require timing details or manual location. bike is a 1980 dr 400 i use for classic scrambles
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#2
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Rattle under load does sound like ignition timing is too advanced but that's an electronic ignition motor, right? Is there any adjustment that may have been set wrong? maybe a stator plate not in the right place? If the cam chain is a tooth out, then the rattle could be valves and the piston having a too close relationship.... Not a good thing for a motor.
Regards Nigel in NZ
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