at my witts end with this one - Snowblower Forum : Snow Blower Forums
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post #1 of 17 Old 12-08-2016, 05:00 PM Thread Starter
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at my witts end with this one

The MTD 5/24 that was given to me, well I got it running and at full throttle it runs beautifully and solid, smooth for a Tecumseh actually but as soon as I lower the throttle as much as a 1/8 inch and it shuts down, Figured it might be the carb but I have tried 3 different carbs I have all for the Tec 5hp and it does the same on all three carbs. I have tried adjusting the governor to no end, I adjust it and reset the rpm and it does the same thing no matter where I adjust it. I am SO out of ideas, If I was planning to keep it I would not be worrying so much but plan to clean this one up and sell to put towed a newer machine so I need to get it to run correctly, Any one have ANY ideas what I could try on this thing. HELP....................
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post #2 of 17 Old 12-08-2016, 05:30 PM
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If it is a single shaft engine you could upgrade it to a predator and sell it.
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post #3 of 17 Old 12-08-2016, 05:33 PM
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Sounds carb related, maybe not....
Does your throttle lever shut down / ground out the ignition when pushed down past idle??
Maybe there is something amiss with the linkage or something moving that is grounding the spark.
Something to look for when all else fails. Hope this helps.

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Ariens 24" 924117 Modified Pro 342cc / 15.50 GT.. Currently Under Construction and testing trials commenced .......
Ariens 32" 924044 Modified Pro 342cc / 16.50 GT
Ariens / Troy Bilt 36" Frankenblower
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post #4 of 17 Old 12-08-2016, 05:38 PM
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Hmmm it is mysterious. Maybe check to make sure that the stop switch wire isn't contacting any part of the throttle linkage and may have worn through and hits when the linkage moves to a certain position. Also if there's a stop switch that is actuated by the throttle arm see that it's installed correctly so that it doesn't make contact when the throttle is in the wrong position. It is possible that the throttle cable is set so that it hits the switch at more than idle. I like to loosen the cable clamp put the throttle lever at "stop" and adjust the cable so the stop switch is activated (or throttle plate is against the idle stop) you should then be able to get full throttle. Sometimes aftermarket throttle levers have shorter throws and won't give the correct range of motion (you adjust for full throttle but won't get idle or stop, adjust for idle/stop then won't get full).

Other than that even if the governor closes the throttle plate the engine should run at idle at the least - as long as the Idle stop is set correctly.

Just some thoughts, best of luck with it.

2003 Snapper I55224 - 5.5HP Tecumseh OHV OHSK55 (195cc)
2016 Toro Snowmaster 724QXE - Loncin 212cc, 2017/18 Toro PowerMax 724OE - Loncin 212cc
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post #5 of 17 Old 12-08-2016, 05:39 PM Thread Starter
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I don't think it's grounding, It does go to a idle but only if I put the throttle down about 1/16 of a inch, any more and it stalls. If I kept it I may do the Preditor upgrade but I would have just used it as is because how often do I use the idle? Not at all and it starts first pull and runs great otherwise, Just not working the way it should. Could the Governor not be working right to cause this, I know very little about how the governor actually works or what moving parts it has so could there be something gummed up with that causing this? No idea myself so Here I am asking if any one has an idea on that.
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post #6 of 17 Old 12-08-2016, 05:40 PM
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Never mind Shaw351 snuck that in while I was typing!

2003 Snapper I55224 - 5.5HP Tecumseh OHV OHSK55 (195cc)
2016 Toro Snowmaster 724QXE - Loncin 212cc, 2017/18 Toro PowerMax 724OE - Loncin 212cc
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post #7 of 17 Old 12-08-2016, 06:15 PM
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Quote:
Originally Posted by Blosumsno View Post
Never mind Shaw351 snuck that in while I was typing!
Sorry, great minds think alike

Ariens 24" 910962 7HP
Ariens 24" 924117 Modified Pro 342cc / 15.50 GT.. Currently Under Construction and testing trials commenced .......
Ariens 32" 924044 Modified Pro 342cc / 16.50 GT
Ariens / Troy Bilt 36" Frankenblower
Ariens 32" 924??? Double auger Monster TBD.....
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post #8 of 17 Old 12-08-2016, 07:20 PM
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EDIT: deleted redundant post

2003 Snapper I55224 - 5.5HP Tecumseh OHV OHSK55 (195cc)
2016 Toro Snowmaster 724QXE - Loncin 212cc, 2017/18 Toro PowerMax 724OE - Loncin 212cc
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post #9 of 17 Old 12-08-2016, 07:43 PM
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Quote:
Originally Posted by Shaw351 View Post
Sorry, great minds think alike
Snow Problem!

It sounds like if you lower the throttle to less than idle it cuts off which is why I suspect the Idle speed/stop screw or tang may be misadjusted allowing the throttle plate to fully close which stalls the engine, whether it's on the carb or a bracket with a bellcrank type throttle linkage connection the plate should be partially open with the throttle control at minimum or just above the "stop" setting if any. It just speaks like some setup issue. Also the governor spring should be loose when at idle and stretched at full throttle - if you are getting that action it should be at least good enough to give you a decent range of control.

Sounds like the engine runs ok otherwise and seems like a keeper to revisit when time allows.

2003 Snapper I55224 - 5.5HP Tecumseh OHV OHSK55 (195cc)
2016 Toro Snowmaster 724QXE - Loncin 212cc, 2017/18 Toro PowerMax 724OE - Loncin 212cc
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post #10 of 17 Old 12-08-2016, 08:08 PM
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Quote:
Originally Posted by Blosumsno View Post
Snow Problem!

It sounds like if you lower the throttle to less than idle it cuts off which is why I suspect the Idle speed/stop screw or tang may be misadjusted allowing the throttle plate to fully close which stalls the engine, whether it's on the carb or a bracket with a bellcrank type throttle linkage connection the plate should be partially open with the throttle control at minimum or just above the "stop" setting if any. It just speaks like some setup issue. Also the governor spring should be loose when at idle and stretched at full throttle - if you are getting that action it should be at least good enough to give you a decent range of control.

Sounds like the engine runs ok otherwise and seems like a keeper to revisit when time allows.
I agree with you.

"It Feels Like Beer O'Clock "
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