gwgdog66 23 #1 Posted April 1, 2012 Carb questions: #1. There is one big thumb screw on the top side facing the front of the tractor. Is the the high speed screw? and what is the initial setting for it? #2. There is a smaller adjustment screw center middle of the carb, is this the idle screw and what is the initial setting on it? Thanks Share this post Link to post Share on other sites
bowtiebutler956 650 #2 Posted April 1, 2012 Sorry Gary, I really don't know the answers to your questions, But I sure would like to see some pics of your machine. Sounds like a neat tractor. Matt :flags-texas: Share this post Link to post Share on other sites
gwgdog66 23 #3 Posted April 1, 2012 I'll get some later today. It's old, and needs some long over due TLC. My cousin's hubby picked up a book for it. We got it running yesterday evening, Points, condenser, and a carb kit. Its running very rich right now. I was thinking one of the Kansas members has one too. Share this post Link to post Share on other sites
CRE1992 135 #4 Posted April 1, 2012 The F40 is the basically the same tractor as my Massey Ferguson 50. I am working on mine also. Any questions you may have, just ask me I might be able to help. Your tractor should have a continental Z134 engine rated at about 30-34hp depending on the year. -Charles Share this post Link to post Share on other sites
TT-(Moderator) 1,131 #5 Posted April 1, 2012 Sounds like a Marvel-Schebler carb. If it is, the one at the top front is the high speed mixture and the one sticking out the side near the mounting flange is low speed (idle) mixture. Idle speed is on the inside toward the engine. I usually start by opening both screws 1 1/2 turns and doing the fine adjustments after the engine is warmed up. I'm thinking that the low speed screw gets turned out (CCW) to lean the mixture. Share this post Link to post Share on other sites
gwgdog66 23 #6 Posted April 3, 2012 Thanks guys. I got it running well. It is a continental Z134 with the Marvel-Schebler carb. It is idling rich. I'll turn the idle screw CCW next weekend as TT suggests. There was a broke wire going to the coil that was causing the problems. We worked it for an hour or so before one of the rear tires gave up on us. Replacing that should be an exciting adventure! Share this post Link to post Share on other sites
gwgdog66 23 #7 Posted April 3, 2012 Here are some pictures. I believe it has been painted a few times. Cousin's hubby wants to paint it again and make it look nice. Share this post Link to post Share on other sites
tbbahner 27 #8 Posted April 7, 2012 Hmmm, yours looks quite a bit better than what I started out with. Just an FYI, the F40 was only made in 1956 and 1957, the last of the true Ferguson's after the merge with Massey. A little over 9000 of them were built i believe. They originally came in grey w/green belly(very early one's, very rare), beige w/green belly, and beige w/silver belly. Most were beige and silver. They are fairly collectable. More useless info that you probably didn't want to know. Nice tractor! Tom B 2 Share this post Link to post Share on other sites
Tap53 57 #9 Posted April 7, 2012 On these Z134's, make sure you check the valve cover breather at least every year, or else it might look like this.. Share this post Link to post Share on other sites
gwgdog66 23 #10 Posted April 9, 2012 Hmmm, yours looks quite a bit better than what I started out with. Just an FYI, the F40 was only made in 1956 and 1957, the last of the true Ferguson's after the merge with Massey. A little over 9000 of them were built i believe. They originally came in grey w/green belly(very early one's, very rare), beige w/green belly, and beige w/silver belly. Most were beige and silver. They are fairly collectable. More useless info that you probably didn't want to know. Nice tractor! Tom B Thanks Tom! We figured it was beige and silver/gray at one time. it shows through the badly faded red in places. He may need a rear rim, when the back tire blew out it took out some rust around the valve stem. On these Z134's, make sure you check the valve cover breather at least every year, or else it might look like this.. is it like a PCV valve on the valve cover someplace? Share this post Link to post Share on other sites
Tap53 57 #11 Posted April 9, 2012 On the left side valve cover, you should see a tube going downward with a flange mount on the side of the cover, right were it bolts to cover is where it will plug up, very small hole there underneath and plugs easily. I check mine every year, Later, Tim Share this post Link to post Share on other sites
gwgdog66 23 #12 Posted April 9, 2012 On the left side valve cover, you should see a tube going downward with a flange mount on the side of the cover, right were it bolts to cover is where it will plug up, very small hole there underneath and plugs easily. I check mine every year, Later, Tim Thanks. I'll check it out next weekend. Share this post Link to post Share on other sites
