Float Height

[ehaughn]

All,

Been struggling to correctly set and check the float height on the Xciting 250.

The manual says 18mm, which is WAY off.  Its not even close.

Anyone know the correct height on the float?

[Iahawk]

how are you measuring height? Shop manual for my old Honda with a Keihin CV carb says to measure with carb and float tipped vertical and then start tipping to the side, maybe 22.5 degrees to 45 degrees, which just allows the needle to seat. That is where measurement is taken, not with the float bowl in the horizontal position, as that reading will be lower.

[ehaughn]

how are you measuring height? Shop manual for my old Honda with a Keihin CV carb says to measure with carb and float tipped vertical and then start tipping to the side, maybe 22.5 degrees to 45 degrees, which just allows the needle to seat. That is where measurement is taken, not with the float bowl in the horizontal position, as that reading will be lower.

I have worked on a ton of Keihin carbs for my hondas. Always spot on.  I slightly tilt the carb until it barely rests on the spring.

I measure the float at the highest point, to the base of the carb.  Same as the keihin.

[Iahawk]

OK, well, shoot, was hoping it could be as simple as proper measurement. I'm dealing with low floats on my 84 Nighthawk...might explain why PO way over jetted at 125 vs factory of 115. Trying to compensate for low fuel level? Plastic, non adjustable floats, too...thinking they just naturally sag a bit after 40 years...heck, I'm sagging, too. ...but at almost $50 a pop for each little, plastic float x 4 is hard to swallow.

If yours are plastic, non adjustable, replacement may be in the cards...and at least you only need 1!

[Iahawk]

my Honda Keihin carbs call for 18.5 mm float height...so your 18 mm may be accurate.

[Ruffus]

Maybe this helps, it's how I measure on certain DELORTO carburators, measure in mm, bigger carbs might have higher swing.

[ehaughn]

Maybe this helps, it's how I measure on certain DELORTO carburators, measure in mm, bigger carbs might have higher swing.

Both my old and new kymco carbs measure 11mm
  See pic.  Float is just touching spring.  It about 30 degrees. 

[Iahawk]

so the solution is to buy a new float?

[ehaughn]

so the solution is to buy a new float?

I think the spec is wrong.  Both my old carb and new carb measure the same