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   Modifications -> CarburetorsMessage format
Posted 2017-05-03 12:40 PM (#153125)
Subject: carbs?????????


Posts: 166
Location: Ontario Canada
hey all
help with tis problem?

XS 850 with 80's electronic ignition. Started a year ago during or after tinkering /cleaning carbs not sure kind of vague.
Will not start when cold but starts fine hot ...kick start. Motorcycle shop hunted and hunted for new seats and needles non O ring on threaded end of seat is an ultra fine metal screen needles are aluminum with rubber tips float height 27mm.
New plug wires lacquered cotton wrapped old school, new batt.
Starts no problem on ether starts fine hot RUNNING FUEL LEVEL IS ABOUT LOCK WASHER UNDER SCREW ON BOWL HIGHT, supposed to be OK cold and not running fuel level 3/8 inch lower sound OK?
Balanced carbs and set mixture screws... engine BACKFIRES WHEN THROTTLE IS LET OFF? This is new. Carbs XS 750 CV Mikuni,s Thanks for any help
PS Proved on single cyl two strokes making fuel level too low will not start.
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