Home › Forums › All Things 750 Twin › Technical Garage › How To Fix It › Float height setting
- This topic has 9 replies, 5 voices, and was last updated 9 years, 11 months ago by
Mikeonabike.
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2nd December 2015 at 7:45 pm #5934
richh
ParticipantHi Guys
Is there a “good” way of setting the float heights on the B model carbs?
The bike is starting and running but the carbs are flooding
Cheers, Rich
2nd December 2015 at 11:04 pm #12938
KaptainkwakKeymasterHi Rich
Have you checked the float needle is seating and shutting off properly?
The best way to check the float levels is by connecting a clear tube to the drain outlets. With the carbs horizontal and the tube held higher than the float bowl you will see the level of fuel that is in the carbs. This can be measured and checked against the settings in the manual
3rd December 2015 at 8:56 pm #12943richh
ParticipantI got that method but wondered if there was a “cheat” method?
3rd December 2015 at 8:56 pm #12944richh
ParticipantI got that method but wondered if there was a “cheat” method?
3rd December 2015 at 11:15 pm #12939
KaptainkwakKeymasterSorry Rich it’s the only way I know
4th December 2015 at 12:06 am #12940lonesome
ParticipantTrial and error. Mostly error. One of the biggest PIA’s going that is. You can either flood it or have it die when you yank the throttle. If it doesn’t do either, leave it alone! I’ve go an MP3 somewhere of mine dying on a high speed run as the fuel just couldn’t keep up. Must dig it out, it’s a cracker.
Anyhow, good luck, you’ll need lots of that.
4th December 2015 at 11:53 pm #12942
MichaelParticipantHi Lonesome,
it is either the fuel cock filter or an aftermarket inline fuel filter.
Clean the fuel cock filter and remove the inline filter.
Cheers, Michael
14th December 2015 at 9:54 pm #12945richh
ParticipantHi Guys
I set the floats spot on with a tube.
Left the bike for a couple of weeks (been super busy since I bought it) and it pissed fuel out of the overflow as soon as I turned the fuel on.
It has all new jets etc so I thought the float needle may have a rust flake or similar holding it open. I stripped off the carbs(again!) and found the brass float full of fuel. AH HA !!!
now I know why it keeps flooding.Anyone got a spare brass float?
Cheers
Rich
15th December 2015 at 12:30 pm #12946Mikeonabike
ParticipantAt least you know what the problem is,They are not difficult to repair with a bit of solder once emptied.
1st January 2016 at 10:29 pm #12941lonesome
ParticipantSorry for the delay, but I have many spare floats if you need one.
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