TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Massey Harris & Massey Ferguson Tractors Discussion Forum

MF35 stumbles under load

Welcome Guest, Log in or Register

Author

bmiszuk

08-27-2007 07:42:22

Report to Moderator

I have two problems with my MF35 Utility (gas). The problems only happen when the engine is warm. When I'm mowing the rpm's go up to 2200 or so then the engine cuts out and they drop back to 1500 before the engine kicks back in again. It sounds like someone turned it off and then turned it back on.

Similarly, after the engine is warm when I let out the clutch to get going, the engine often stumbles (but not every time). After a second it kicks in and accelerates fine.

An observation: When the engine tries to die, I do not see the governor linkage move at all.

Where do I start?? The ignition system looks new but I've been pulling mud dauber messes out of various parts of the tractor since I got it last fall.

[Log in to Reply] [No Email]

bmiszuk

09-02-2007 06:28:12

Report to Moderator

Re: MF35 stumbles under load in reply to bmiszuk, 08-27-2007 07:42:22

This turned out to be a blocked air intake. Mud daubers, again, plugged the rubber hose leading to the air cleaner. Cleaned it all out and she runs great now.

[Log in to Reply] [No Email]

David, Surrey UK

08-28-2007 04:55:55

Report to Moderator

Re: MF35 stumbles under load in reply to bmiszuk, 08-27-2007 07:42:22

Wondering whether there's a problem with the centrifugal advance/retard on the distributor (if your tractor has it). This is speed dependent. Sometimes the springs go.

Normal advice for ignition problems: first check you have a good spark. In this case I'd check with a timing light.

David

[Log in to Reply] [No Email]

Gerald J.

08-27-2007 13:22:51

Report to Moderator

Re: MF35 stumbles under load in reply to bmiszuk, 08-27-2007 07:42:22

Except for the wide range of engine speeds, I'd say the main jet is running too lean and so the engine won't quite produce the power the load demands and so the governor already has the throttle wide open. Try opening the main jet screw a quarter turn at a time.

It is possible its starving for fuel from a gummed up fuel system or that there's an intermittent connection in the ignition circuit.

My JD 4020 gas ran that way a couple days after I got it home, but there the intermittant was the carbon ignition wire between the coil and the distributor that was open when moved to a certain spot.

Gerald J.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy