My jd440ic is running a bit rich....have carbon out exhaust...dang book does not show how or which to turn in etc or how many turns...do i adjust the idle screw...or load screw??? how many turns out??? both my 440 dozer and 40s wheeled running rich...seems to me one of them or both has a little crank handle adjusting screw, whatever one it was i adjusted about a quarter turn and booger spit and sputtered till i turned it back, thought that would make it leaner by turning in?? l anyhow need to adjust em both..
My hearing is shot and no one around here knows how to adjust carbs..., makes fine adjustment a bit of trouble
re..jd440ic marvel slabel carb settings
- Paul Buhler
- 350 crawler
- Posts: 991
- Joined: Wed May 21, 2008 6:25 pm
- Location: Killington, VT
Re: re..jd440ic marvel slabel carb settings
here's a manual. I hope it helps. The adjustment procedures and jet functions are explained. Paul
http://ntractorclub.com/howtos/pdfs/Ser ... retors.pdf
http://ntractorclub.com/howtos/pdfs/Ser ... retors.pdf
Paul Buhler
Killington, VT
420c 5 roll with 62 blade, FOPS, and Gearmatic 8a winch
Killington, VT
420c 5 roll with 62 blade, FOPS, and Gearmatic 8a winch
Re: re..jd440ic marvel slabel carb settings
Good find Paul! I’ve been running a little rich myself... time to clean out those jets!
1956 JD420, gearmatic 8a winch, custom 6 way blade and FOPS.
Re: re..jd440ic marvel slabel carb settings
i added 4 ounce sea foam motor treatment to my full tank of gas...i don't see the black smoke NOW, will see next time i run it. have not messed with jets.
by the way...here it is May 7th and the dozer is still running fine tho i suspect will need to add sea foam again done used it all up...pushing her a bit hard pushing dirt .....pulled large tree stump , pushed 30 tons of asphalt grindings and still going...
by the way...here it is May 7th and the dozer is still running fine tho i suspect will need to add sea foam again done used it all up...pushing her a bit hard pushing dirt .....pulled large tree stump , pushed 30 tons of asphalt grindings and still going...
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