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Anonymous Posted on Jul 19, 2014

Why does my Vintage Cub Cadet 125, Kohler 12HP engine pop/backfire and die when given any throttle?

Why does my cub pop/backfire and die when I give it any throttle? it will start and idle fine, but as soon as you try to throttle-up it pops, backfires, and dies? Mower has kohler 12hp.

1 Answer

laruecrew

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  • Contributor 50 Answers
  • Posted on Jul 22, 2014
laruecrew
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Joined: Apr 06, 2009
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Carburetor needs adjusted. May need rebuilt or just cleaned. Could be one of the jets is plugged.

5 Related Answers

Anonymous

  • 62 Answers
  • Posted on Apr 18, 2009

SOURCE: Z force 48 in. cub Cadet mower starts but dies

Check the wires to the seat switch. Under the seat you should find 2 wires connected to the seat. Unplug them, and use a jumper on the end that goes into the body of the mower. Try it again, and if it works, replace your seat.

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mickey813

mickey813

  • 472 Answers
  • Posted on Oct 12, 2009

SOURCE: Kohler courge sv720-0010 on cub cadet

SOUNDS LIKE IT HAS SOME BAD GAS YOU MAY NEED TO CLEAN THE CARB AND IT MAY NEED A KIT

BAMOUT

Dennis Key

  • 2481 Answers
  • Posted on May 07, 2012

SOURCE: I have a cub cadet 1500 series with 200 hours! I

I think runnng out gas. Your fuel cap vent and unhook fuel line from carb. and see if fuel run out. And check if fuel filter in the right direction.

Anonymous

  • 6468 Answers
  • Posted on May 21, 2012

SOURCE: my cub cadet runs fine untilm the pto is engaged then it backfires and dies?

check the safety switch on the seat

Clint Hemsworth

  • 14 Answers
  • Posted on May 05, 2014

SOURCE: I have a kohler 18 hp twin engine on a cub cadet.

Check to make sure idol isnt set too high, make sure the air filter is infact clean to prevent it from chocking itself, make sure choke is off :-) and also make sure you idol all the way down when you kill it. Make sure your spark plug is good to prevent flood, and detonation, peaceout.

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What size belt replacement for Sears 2000 Cub Cadet deck belt model SV 590?

The SV 590 is the model designation of the Kohler engine powering the lawn tractor.

https://www.google.com/search?q=kohler+model+sv590s+parts+diagram

The 'Sears 2000 Cub Cadet' part is most of your tractor model details and the Deck Belt appears to be 42".

https://www.google.com/search?q=Sears+2000+Cub+Cadet+deck+belt

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I have a Cub Cadet Riding Mower with a Kohler 7000 22hp engine. I have put a new carburetor on it because it was revving up and down, it is now revving up and down and backfiring as well.

Question edited for clarity.

That is called 'surging' or 'hunting', and is often caused by an air leak in the inlet manifold letting extra air in. Backfiring can also be a result as a lean mixture (too much air) is suddenly ignited in the exhaust. If it is backfiring through the carburetor, the is usually bad timing.

Service Manual KT715-KT745 - Kohler Engines

kohlerengines.com http://www.kohlerengines.com > engines > pdf PDF
Carburetor is designed to deliver correct fuel-to-air mixture to engine under all operating conditions. Main fuel jet is calibrated at factory and is not ...


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What is causing my 12hp kohler engine to backfire and quit running when given any throttle?

That sounds like either bad (old) gasoline or the carburetor needs cleaning very badly - it's running very lean.
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Cub cadet runs fine until I start the PTO, then it stutters and dies. If I shut off the PTO blade, it will pick back up and run again

I had a similar problem with my cub Cadet. It turned out that the Ignition Module on the engine was cracked. Motor started OK - but died as soon as a load (such as engaging the mower) was put on it.

These are not terribly hard to check, and/or change, yourself. Easy to get to once the motor shroud is removed.

My 25 HP Kohler engine has 2 modules. EXPENSIVE from the dealer - found MUCH better prices online.
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I have a new Cub Cadet RZT-S - 23 HP Kohler. I was

check the drive belt on hydraulic pump under you seat
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