Follow up Woods mower dragging engine

710ltd2002 · May 7, 2022

Thanks to everyone for the tips and advice. I ended up cleaning every component in the fuel line and increased the fuel flow from about a third of a pint in three minutes to about four fifths of a pint. There is only a single screw on the carb and it makes no difference where it is set. The plugs are clean, grayish residue on them, not black. It runs a little better now with the mower engaged, but it is not up to par yet. I put a tach on it and found it only runs 400 rpm at idle and a lethargic 1050 rpms full throttle. I did try adjusting the governor per the manual, but it did not increase the rpms. It blows plenty of blue smoke out the stack, and it seems to burn a quart of oil every five hours or so. All things considered, I think Ill be changing out the piston rings. I will post more on the Farmall page as I get into this tractor deeper. Dave

old · May 7, 2022

Down low on the carb is a sort of plug you can remove. It is the main jet cover. With it off you should get a good flow of gas out of it. If it is clogged any it will cause a problem like you have

Steve@Advance · May 7, 2022

Sounds like it is getting a little tired!

Did you check the throttle to see if it goes wide open with the engine off and throttle lever set for fast? If that is not happening, you are not getting full potential out of the engine.

used red MN · May 8, 2022

Does overriding the linkage from the governor to the carb increase the speed?

caterpillar guy · May 8, 2022

Sounds like you still have a plug in something if the screw does not affect it. Sounds like your still a bit light on the gas flow too.

gene bender · May 8, 2022

with RPMs m that low no wonder you are loosing power. Your linkage from the gov to the carb must be off and the gov probably needs a rebuild.

John-MI · May 8, 2022

What kind of tractor? Stupid question but did maybe get the wrong linkage to the governor to the carb switched?

neverfear · May 8, 2022

Have you looked under the mower and made sure you don't have some wire or twine wrapped up in the spindles?

Geo-TH,In · May 8, 2022

White plugs means you are running lean.

Remove the screw in carb, drain fuel from carb and blow air in the place where you removed the screw.

You are not getting enough fuel. Too lean.
You should have 1550 rmps.

Remove air filter and look in carb throat to see if the throttle plate is fully open.
Before overhauling I would put a different carb on it, do a compression test and check timing. Replace points and condenser.

Does appling choke help?

Thanks for update
Good luck

Traditional Farmer · May 8, 2022

Like Old said sounds like the small holes in the bottom of the carb are stopped up,I'v seen them so packed had to drill them out.

fixerupper · May 8, 2022

Sometimes if a loose piece of junk is plugging the jet removing that plug will let the gas back flush the jet when when it drains out. Most of the time we do not get that lucky. Like what was said it sounds like a tired engine that needs to be freshened up.

Blackhole49 · May 8, 2022

What is your compression? My tired 8n (95psi) burns a quart +- every 5 hrs and has been running my 6' Landpride at 540 pto speed (1800rpm?) for 20 years no problem. I think it is still carburation.

cjunrau · May 8, 2022

to make sure it is carb related,,,,, I always take a spray bottle of gas and while running under load have someone or yourself spray gas into the carb. If it comes up to speed and has the power it should you know it is not the governor or the tiered engine. Then you know the carb needs cleaning and that is not always a first crack get it done job. It amazes me at how clean we think we have it and somewhere in there there is just a wee bit of calcium build up that is just slowing that gas ever so slightly to make it bog down.

I had a Datsun truck I hooked my windshield washer fluid to the intake and took it down the road. push the washer and that truck took off like it was supposed to. I knew then the crappy way it drove was due to carb not timing and spark.

710ltd2002 · May 8, 2022

Cant check it yet. My gauge didnt fit the plug hole. Need more tools

710ltd2002 · May 8, 2022

I did try gently turning that covernut where the jet screw would be, but I was afraid to give it too much pressure because I wasnt sure it was actually meant to be removed. I will look at it again.

RogerinIowa · May 8, 2022

Would not recommend blowing air in a mixture adjustment hole on a carburetor. You run the risk of caving in a float tank!

710ltd2002 · May 8, 2022

Ha ha thats where this whole thing started! We brought it home Monday night and Tuesday she called to say she picked up some twine and it was bogging down. I got the last bit of twine off the spindle, sharpened the blades, then found it just doesnt have as much power as it should.

710ltd2002 · May 8, 2022

Used Red gave me a tip on testing the governor. Its next on the list. Thanks for your reply. I really appreciate how much help people offer.

710ltd2002 · May 8, 2022

Have not gotten back to it yet. I spent much of the past few days installing the floor you can see under my silly tool post on the tool page. Checking the governor is my next step. Of course, Mothers Day is not the day to spend in the shop working on a tractor!

710ltd2002 · May 8, 2022

Thanks for the tip. That sounds like the first thing to look at whenever there is a potential carb issue.

Geo-TH,In · May 8, 2022

I do it all the time on my Farmall C and Jubiee, have you??
Drain fuel, leave drain plug open.

RogerinIowa · May 8, 2022

Most would probably not remove the drain plug.

Fritz Maurer · May 8, 2022

Drain plug wouldnt make the difference anyway, that carb has a huge bowl vent. But youre right, Roger, I crushed a float on some oddball carb, had a heck of a time finding a replacement. Never again.

Geo-TH,In · May 8, 2022

Theair comes out the main jet.
Doesn't come close to float.

Follow up Woods mower dragging engine

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