Question about Motorcycles
Carb fuel/air setting help needed for smooth idle
I having same prob but I think my throttle is sticking because of the spring any ideals
Posted on May 06, 2013
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Posted on Jan 02, 2017
i'd say the carb is gummed up especially the pilot jet (#16158) in this pic of the USA carb. may have to remove the carb & bowl and then remove the pilot jet (w/ flat head screw driver) and clean out the tiny holes.
the carb slide is installed backwards (turned 180 degrees). its #16025 in the pic. i've done this before on my daughter's XR70 and Z50. you'll know if its this when you move the choke lever, RPMs increase and decrease.
hope this worked for you and was fast enough.
Posted on Feb 06, 2009
SOURCE: carb settings
Its simple , just remove the air filter clean it and check the spark plug and reset it to its right specs the gap.
Locate the air-mixture screw on the carb and warmup thebike's engine.
Turn the air-mixture screw in tothe last , but very slowly as to not damage it as its very sharp at the end of it, at this point increase the idling a little thn turn the air-mixture screw outwards 1 and a half turns and you will notice the difference in the engine , it may rev a little higher and be stable , here you will have to reduce the idling speed and again try to readjust the air-mixture screw outwards a little or inwards alittle depends how the engine responds.
Hope this will help!
Knight.(Yamaha Seca XJ750A 1981)
Posted on Mar 01, 2009
Get some carb cleaner. Remove and clean the Nozzle, choke and main jet. Remove the pilot jet and air jet but count the number of turns to remove each one and put them back the same number of turns. Don't mess with the needle or clip or the pilot screw and plug at this time. Clean the carb thoroughly. Don't get carb cleaner on the diaphragm. If able, submerge the carb in cleaner overnight.
Let me know what happens by posting a comment.
Posted on Jun 27, 2009
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