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Motorcycles => Venox 250 => Topic started by: star667 on December 02, 2016, 12:14:05 AM

Title: Float level
Post by: star667 on December 02, 2016, 12:14:05 AM

Bought myself a 2010 venox that some guy tried to fix I have fixed her up and she runs ok just bogging and all that previous owner messed with float heights and I have no idea where to measure from service manual is a piece of junk for this floats don't even come out 19mm

Title: Re: Float level
Post by: CROSSBOLT on December 03, 2016, 02:33:40 AM

Hey, Star! One old timer method that USUALLY works pretty well is to turn carb up-side-down and see if float is parallel with the float bowl flange. Sight the flat part that pushes the float needle into the seat if the float is round. This assumes the little spring loaded plunger is working. Most of the info in Kymco service manuals is incorrect anyway. Let us know how this works out.

Karl

Title: Re: Float level
Post by: star667 on December 04, 2016, 08:42:57 AM

Hey karl thanks for the reply one problem I'm running into is the float does not sit flat on the bike both of the float bowls are roughly at a 35-40 degree angle

Thanks
Star

Title: Re: Float level
Post by: CROSSBOLT on December 04, 2016, 02:16:30 PM

I see where that could be a real problem. I was assuming the carb was pretty much parallel with the ground. Is this a Mikuni or Kehin? Whichever, maybe the maker of the carb has some detail on the internet.

Karl

Title: Re: Float level
Post by: star667 on December 05, 2016, 05:59:08 AM

Keihin cvk dual carbs

Title: Re: Float level
Post by: star667 on December 06, 2016, 08:45:33 AM

Appearently more accurately keihin 30mm cvk carbs

Title: Re: Float level
Post by: CROSSBOLT on December 06, 2016, 02:38:50 PM

I looked into what was on the internet for both makers and they have carbs that are immune to mounting angle. They use either circular floats or dual floats to get the valve needle in the central part of the float bowl. Bet yours is one of these models. Float height setting technique then will be as stated earlier.

Karl

Float valve does not need to be in the center but the floats need to be. The CVK has a split float with the two circular floats straddling the central main jet. Right idea is the float chamber is nearly "concentric" with the main jet and emulsifier. The float height remains a mystery since Keihin specifies fuel level to be .5 mm +/- .5 mm above the carb-float bowl flange. Means you have to rig a clear tube to the drain and bend it up past the side of the carb and watch it fill. The fuel in the tube should stop moving .5 mm above the flange above the gasket. Google for Keihin CVK carbs. Lotsa pictures.

Title: Re: Float level
Post by: star667 on December 06, 2016, 09:28:39 PM

Hey Karl I was looking through the magna service manual and it said 6.8mm which seems much more doable so I'll give that a try

Title: Re: Float level
Post by: CROSSBOLT on December 06, 2016, 10:31:57 PM

 ;)

Karl