Question about Mtd Troy-Bilt Bronco OHV Tiller

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Troy bilt mower ran fine then died and now it wont start back. It has fire and a new spark plug. It gets fuel past the filter. It starts if i put a small amount of gas into the intake. Whats wrong? My product is actually a Troy bilt bronco riding mower with 18.5 hp engine

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Remove the air filter and set aside.
Take a can of carburetor cleaner and spray the inside of the carburetor.
Let it set for a moment and then try starting the engine. It should run a few seconds. Repeat. When it starts squirt a small shot of cleaner in the carburetor to keep it running. That should remove the varnish the gas leaves as it evaporates over the winter.

If it still won't keep running then there is trash in the float bowl plugging the needle valve seat and the jets.

1) Turn off the gas or remove the gas line and plug it with a small screw or stick to keep it from leaking out of the gas tank.
2) Look on the bottom of the bowl for a nut .
3) Remove the nut and drop the float bowl.
4) Carefully remove the pin holding the float and needle valve assembly.
5) Take the carburetor cleaner with the straw it comes with and spray every hole in the carburetor to clean the jets . (up through the needle valve seat, down top of the carburetor , see a hole, spray it with the cleaner.)
6) Clean the float bowl.
7) Reassemble and make sure the gas isn't leaking and try to start it again.

Posted on Jun 06, 2010

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I would check for spark, if you have spark put a little bit of carb cleaner in the spark plug hole and see if it fires up and then dies. If that is the case then the carburetor needs to be cleaned. Hope this helps!

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If you know for sure that it's not getting fire, then I would take it back to where you purchased it. It sounds as if it has a bad ignition module.

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