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Mixture adjustment 444-544

uid 25070's pic
posted by  Barongrey on  Tue Apr 26 14:02 CST 2005
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last visit: Wed Dec 3 15:46 CST 2008
[RELATED]

...and you don't really NEED a balancing tool to get the carbs matched up. They are nice to have, and should only cost about $25 (try a motorcycle shop).

I use a mechanic's stethoscope with only the earpieces and the rubber tubes connected. I take off the tip and the probe. I put one hose into each carb opening (throat) and listen to the balance of air noise. The sound will seem to move from one side of your head to the other until you get them right, and it's in the middle of your head. Follow that OK?

ALSO, while we're doing some tune-up stuff here, the PO probably used the wrong feeler gauge to set the valve lash, too. You need a wire-type feeler gauge, not the flat blade type. The rockers tend to wear a little across the top, and trying to measure the gap with a flat blade usually leaves them too far apart.

Insert the wire parallel to the rocker shaft, i.e. front-to-back, not across the motor from side-to-side.

Have fun!






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