Pilot jet id By twodogsnme (Read 504 times)

[twodogsnme]

I bought a yerfdog 26mm carb n replaced main jet w/110..got lots of mid n top end now but bogs at start off..it was suggested by Alleyoop that my pilot may b too big..pulled it out only to find NO numbers on it anywhere...does anyone know what size pilot jet comes standard in this carb? Looked around online but to no avail..any help/suggestion would b appreciated..keep the rubber down

[jct842]

Try the pilot out of old carb, and it may be marked..

[twodogsnme]

jct842...what a grand idea!! Duh on my part!!...gonna do just that on Mon.. Out ridin today..thanx n keep the rubber down

[Alleyoop]

Most of your aftermarket carbs the jets they put in there are not marked sorry to say. But the PILOT jets on the 24-28mm carbs run anywhere from 103-110.

A common good size pilot is usually 105.
To check if the pilot jet is either to big or to small test it:

To check if the pilot jet is to big:
1. Turn the Fuel Ratio Mixture Screw CLOCKWISE until it kills the motor.
A. If it is all the way in and it did not kill the motor THE PILOT JET IS TO BIG.
B. If it kills the motor when there is about 1 FULL TURN before closed YOU HAVE A GOOD PILOT JET SIZE.
C. If you get a good IDLE and good starts when the FUEL RATIO SCREW is MORE than 3 1/2 turns out you have to SMALL OF A PILOT JET. YOU need the next Size Pilot JET.

A good setting with a good size pilot jet the screw should be out anywhere from 3 1/2 to 2 turns out from the closed position.


If yours is bogging when starting off Try Leaning it out Turn the Screw Clockwise 1/4 at a time and after each 1/4 turn TRY IT.
Alleyoop

[cyborg]

Jun 14, 2015 11:13:12 GMT -6 twodogsnme said:

jct842...what a grand idea!! Duh on my part!!...gonna do just that on Mon.. Out ridin today..thanx n keep the rubber down

You know he doesn't look that smart!!!!!,, fools Em everytime!!!!