D17 Carb Help

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Hello, looking for some carb help for a rookie. 
Had to get a replacement carburetor for my Series 1 D17. One that came on it was beyond rebuilding, but that's another story. The "new" carb is a Marvel-Schebler TSX871 that was professionally rebuilt by a carb shop. The issue I'm having is that there's no middle ground with the carb's operational spectrum. It's either low idle speed, or engine sounds like it's running at 150% with about an 1/8" movement of the throttle lever. The throttle & choke linkages have no problem rotating each of the disks through each's full rotation, so I'm not worried about that. My thought is that maybe the adjustment screws are way off from the shop. What should each of them be set to as a starting point? Can't find any info on this online or in my user manuals. Other ideas or help would be much appreciated!Thanks, Nick

	This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
	The Forum	Parts and Services	Unofficial Allis Store	Tractor Shows	Serial Numbers	History

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
nl_5728 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 30 Oct 2021 Location: South Dakota Points: 7	Post Options Post Reply Quote nl_5728 Report Post Thanks(0) Quote Reply Topic: D17 Carb Help Posted: 10 Apr 2022 at 9:32am
	Hello, looking for some carb help for a rookie. Had to get a replacement carburetor for my Series 1 D17. One that came on it was beyond rebuilding, but that's another story. The "new" carb is a Marvel-Schebler TSX871 that was professionally rebuilt by a carb shop. The issue I'm having is that there's no middle ground with the carb's operational spectrum. It's either low idle speed, or engine sounds like it's running at 150% with about an 1/8" movement of the throttle lever. The throttle & choke linkages have no problem rotating each of the disks through each's full rotation, so I'm not worried about that. My thought is that maybe the adjustment screws are way off from the shop. What should each of them be set to as a starting point? Can't find any info on this online or in my user manuals. Other ideas or help would be much appreciated! Thanks, Nick

Sponsored Links

Brian G. NY Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: 12194 Points: 2259	Post Options Post Reply Quote Brian G. NY Report Post Thanks(0) Quote Reply Posted: 10 Apr 2022 at 9:47am
	I think you should be looking at the governor section of your manuals. Sounds like the throttle/governor linkage and/or the governor/carburetor linkage needs to be set so the governor can properly control the RPMs.

captaindana Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 14 Sep 2009 Location: Fort Plain, NY Points: 2559	Post Options Post Reply Quote captaindana Report Post Thanks(0) Quote Reply Posted: 10 Apr 2022 at 9:55am
	I second that
	Blue Skies and Tail Winds Dana

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 21832	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 10 Apr 2022 at 10:25am
	Engine OFF. Pull the hand throttle wide open. Disconnect the link rod from the vertical governor arm behind the generator. The length of the link rod should be just so it will slide back into the hole on the vertical governor arm. It is probably too long. Bend the link rod to shorten it, Just slide in the hole without touching the vertical arm.

nl_5728 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 30 Oct 2021 Location: South Dakota Points: 7	Post Options Post Reply Quote nl_5728 Report Post Thanks(0) Quote Reply Posted: 10 Apr 2022 at 2:05pm
	Thank you, gentlemen! My carb to governor linkage rod is a redneck hodge-podge, so that could easily be the culprit after hearing your responses. It's a shortened throttle rod + a piece of sheet metal. Worked on the old carb, so I didn't think much of it. Previous carb had a welded conglomeration of washers to control the throttle shaft. Just bought a new d17 throttle rod on ebay to rule out the cheap-n-easy culprit & reduce the redneck engineering on my tractor. Will do some reading on the governor mechanism while I wait. Maybe it will be a simple fix... If anyone knows suggested carb adjustment starting points, I'll try that as well. Not so confident in myself to figure that piece out ha. Thank you for the help!