OzVMX Forum
Clubroom => Introductions => Topic started by: johnny b on July 28, 2008, 01:26:17 am
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Just got this o'l yz,81',seems to be in good shape for the age. Has good compession,cleaned the carb,flushed tank ,freash fuel,etc. Runs pretty good,but a terror to start,especially when warm.Iv'e worked on bikes on and off for years{59 years old} but I'm lost on this one. Any help,questions,comments,etc. would be greatly apreciated. Thanks,,Johnny B
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reeds hanging open , esp if fibre ones , get a set of std steel ones , crank seals does the exhaust smell of gear oil / check the timing , mabey too far advanced the 490 is 2mm btdc 465 at a guess is the same , weak mag coil wil do it , weak ignition coil , some of the above can be heat agrivated , fibre reeds may warp when hot (my theory only ) , mag coil insulation has (on one of mine )broken down when hot , but when cold was fine , float level if a bit low can make hot starts difficult , if worn greatly in the cylinder the extra clearance when hot can afect
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maybe move the thread down to the Yamaha section and you may get more info from the guys there?
cheers
Rossco