Question about 1982 Yamaha XJ 650
Hope this doesn't reach you too late. These bikes take some time to fully warm up.
You can adjust the idle down by turning the knob between the #2 and #3 carburetors counterclockwise until you reach 1050rpm. Wear a glove or you will burn your hand!
Ride the bike some more, and see if the idle stabilizes. If not, you may have a vacuum leak somewhere.
A quick way to diagnose this is to take a propane torch (NOT LIT!) and run it around the carb boots and vacuum caps. If there is a change in rpm, then inspect the boots and caps for tightness and cracks.
Posted on Mar 09, 2011
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Posted on Jan 02, 2017
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