Tecumseh carb/governor linkage

Discussion in 'Mechanic and Repair' started by John Emac, Jun 4, 2005.

  1. John Emac

    John Emac LawnSite Member
    from CO
    Posts: 2

    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
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    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 !
     
  3. John Emac

    John Emac LawnSite Member
    from CO
    Posts: 2

    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
     
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    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
     
  5. Capemay Eagle

    Capemay Eagle LawnSite Bronze Member
    Posts: 1,750

    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
     
  6. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Haha, I'm still around ! :hammerhead:


    If you can't get it from my explanation, Post the engine model AND spec numbers....
     
  7. j10998

    j10998 LawnSite Member
    Posts: 2

    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
     
  8. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    Here you gooo......



    [​IMG]
     
  9. ArenaLandscaping

    ArenaLandscaping LawnSite Member
    Posts: 230

  10. j10998

    j10998 LawnSite Member
    Posts: 2

    Thank you so much youve both been very helpful!
     

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