acewrestler

i need help with my OS 91 DF engine. i don't know where the low end screw mixture needs to be. is there any who who know how many turns out it needs to be. I'm not really sure what the problem is but every time i start the engine i have to have it at half way open to keep it running and then if i give it full throttle the motor starts dieing. so i could really use some help.

thanks

Chase

MinnFlyer

My Feedback: (4)

Chase,

Here's the manual for that carb. maybe that will help:

http://204.96.183.34/RCU/Manuals/OS9bCarbmanual.pdf

TNRabbit

Dubb Jett has an excellent tutorial for adjusting both high and low mixtures on his web site:

www.jettengineering.com

follow the link to "tech specs and instructions"

SENZA

91 fx 2 1/2 turns out from bottom . after you have made your adjustments, start the engine and set the needle valve first high end then fine tune the lower