PDA

View Full Version : Tecumseh carb/governor linkage


John Emac
06-04-2005, 03:51 PM
I need info or diagram showing linkage of carb and governor on a Scott's (Murray) mulcher mower (walk behind) Model 21997x8a with a Tecumseh 6.5 HP. I just was given this mower and throttle lever wont increase RPM's and I am uncertain as to the correct linkage to the lever/carb/governor. I'm a roofer needing a small engine guy to help. I'm sure it's a typical set up, but it's not my area. Cant find a daggum diagram at the Tecumseh site. :realmad: I'll appreciate your help.
John

Restrorob
06-04-2005, 07:39 PM
I need info or diagram showing linkage of carb and governor on a Scott's (Murray) mulcher mower (walk behind) Model 21997x8a with a Tecumseh 6.5 HP. I just was given this mower and throttle lever wont increase RPM's and I am uncertain as to the correct linkage to the lever/carb/governor. I'm a roofer needing a small engine guy to help. I'm sure it's a typical set up, but it's not my area. Cant find a daggum diagram at the Tecumseh site. :realmad: I'll appreciate your help.
John


If you post the model and spec. numbers off your engine I'll look it up and give you a hand,Tecumseh has many different control assemblys !

John Emac
06-04-2005, 09:36 PM
Hey thanks , Rob,
The motor is aTecumseh OVRM120. The motor family is YTPXS.1951AA. It's a 195 cc. The governor lever has 2 holes at its top, 1 for the throttle link, 1 for the governor link. I dont know which should go from the throttle control lever to the gov and which should go from the carb butterfly to the gov. there are 2 links. 1 is a solid link, the other is a link with a small spring. When I got the mower, it had been run w/o the air cleaner and wouldn't run. I took off the carb, cleaned it up and reinstalled. I've put in a new air cleaner and spark plug and I can get the mower to run, but I've got it jury rigged. The way it was set up, the throttle control didn't increase the RPM's. I think someone took it apart and messed up the linkages in putting it back together. I have no manuals and am uncertain as to how it should be set up. Again, it's just the two links coming off the governor that are the mystery. I appreciate you replying, bud.
Regards,
John

Restrorob
06-04-2005, 10:59 PM
Hey thanks , Rob,
The motor is aTecumseh OVRM120. The motor family is YTPXS.1951AA. It's a 195 cc. The governor lever has 2 holes at its top, 1 for the throttle link, 1 for the governor link. I dont know which should go from the throttle control lever to the gov and which should go from the carb butterfly to the gov. there are 2 links. 1 is a solid link, the other is a link with a small spring. When I got the mower, it had been run w/o the air cleaner and wouldn't run. I took off the carb, cleaned it up and reinstalled. I've put in a new air cleaner and spark plug and I can get the mower to run, but I've got it jury rigged. The way it was set up, the throttle control didn't increase the RPM's. I think someone took it apart and messed up the linkages in putting it back together. I have no manuals and am uncertain as to how it should be set up. Again, it's just the two links coming off the governor that are the mystery. I appreciate you replying, bud.
Regards,
John


Since you explained a little better I wont have to look this one up.
The solid rod hooks into the top hole on the gov. arm,You want the longest stright end in this arm,The bend area closest to the carb.,On the carb. is three holes put this rod in the hole closest the engine block but as far away from the gov. arm. The spring goes in the second hole down on the gov. arm,Make sure you dont twist the spring but on the throttle control there should be two holes on a arm sticking out towards the engine block put this rod in from the bottom so the hook end is on the top in the hole closest the block,This will ensure the two rods don't touch each other. Now look up under the throttle control and there should be a small screw facing you,This is the high speed adjuster screw it in to raise RPM screw out to lower.

Hope I didn't loose ya along the way but if I did just shout back and I'll try again. coulda done 4 in the time in took to type this,I'm a better wrench spinner than typer. LOL

Capemay Eagle
05-19-2010, 08:36 PM
Since you explained a little better I wont have to look this one up.
The solid rod hooks into the top hole on the gov. arm,You want the longest stright end in this arm,The bend area closest to the carb.,On the carb. is three holes put this rod in the hole closest the engine block but as far away from the gov. arm. The spring goes in the second hole down on the gov. arm,Make sure you dont twist the spring but on the throttle control there should be two holes on a arm sticking out towards the engine block put this rod in from the bottom so the hook end is on the top in the hole closest the block,This will ensure the two rods don't touch each other. Now look up under the throttle control and there should be a small screw facing you,This is the high speed adjuster screw it in to raise RPM screw out to lower.

Hope I didn't loose ya along the way but if I did just shout back and I'll try again. coulda done 4 in the time in took to type this,I'm a better wrench spinner than typer. LOL
I have a chipper vac with this engine. I took off the carb and cleanded it and I am having problems putting the linkage back. If you are still around, maybe you can help me?? i think it is the same engine. It is a 195cc about a 05 or 06

Restrorob
05-19-2010, 08:45 PM
If you are still around, maybe you can help me??

Haha, I'm still around ! :hammerhead:

If you post the model and spec. numbers off your engine I'll look it up and give you a hand,Tecumseh has many different control assemblys !


If you can't get it from my explanation, Post the engine model AND spec numbers....

j10998
11-12-2011, 07:08 PM
I also have a OVRM120 that i took apart to clean the bowl tank ect and i cant remember how everything goes back. Your holp would be great. The engine info is as follows:

Model: OVRM120 22032E
Family: YTPXS.1951AA
195cc DOM: 0305 J

Restrorob
11-12-2011, 07:19 PM
Here you gooo......



http://i107.photobucket.com/albums/m314/Restrorob/Tecumseh/TecuOVRMThrottleLinkage.jpg

ArenaLandscaping
11-12-2011, 07:28 PM
Tecumseh Carburetor Identification,Troubleshooting, and Service manual.

http://billious.com/dl/Tecumseh.Carburetor.Identification.Troubleshooting.and.Service.pdf

j10998
11-12-2011, 07:41 PM
Thank you so much youve both been very helpful!

WayneL
07-28-2012, 02:57 PM
I have an old Ariens Fairway riding tractor.

It wasnt running well so I decided to replace the carb and got the updated 631800A and swapped the throttle and Choke to the new carb.

the engine is V50 60215H

This carb has a linkage plate that sits on top of the carb that has 3 points to it. One is for the govenor the other for the throttle cable and the 3rd is a point that goes in some hole.

Ahhh you see my problem... didnt take enough note or a photo before removing and do not know how to reassemble the linkage.

I've attached some photo's would greatly appreciate the advice

Wayne

Restrorob
07-28-2012, 07:29 PM
As below......