Question about Poulan 42-Inch Steel Deck 17.5 HP Briggs & Stratton I/C Engine With 6 Speed

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Engine will not start. good spark, have cleaned carb, but still does not want to fire. have added fuel down carb and have been able to get motor to fire for a moment but seems like I am not getting fuel to come from the carb

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  • dvsxutact May 30, 2010

    have you removed the carb bowl to verify there is no old fuel in the carb clogging up the fuel jets?

    i had this same problem with my Craftsman LT4000, turns out that the main fuel jet was totally clogged and not letting fuel pass from the main line into the carb bowl.

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There is a solenoid on the bottom of the bowl on the carburator. This solenoid shuts off the fuel when the key is in the off position. Remove the gas line, remove the connector on the solenoid and unscrew it from the bowl. Plug the connector back in with the solenoid removed and watch to see if the solenoid is pulling in the rubber stopper when you turn on the key. If not, check that the solenoid is receiving power. If not it's probably in the wiring. If it has power and doesn't operate, you need a new solenoid.

Posted on Jun 18, 2010

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Pour Mr. clean in the gas tank and start it! This will make a huge differance

Posted on May 31, 2010

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Next, drain the carb bowl. The carb bowl should have either a drain screw in it or the bottom of the bowl has a hex head fitting to allow the entire bowl to be removed. Take off the bowl and get rid all the fuel inside it. Look for water droplets that sit under the fuel on the the metal surface after the fuel has been poured off. If you have the bottom hex fitting type carb look at the barrel of this fitting. That is where you main jet is! You can use a fine piece of metal wire strand and clean out this jet. The holes are generally on the side *(if the jet has a bottom adjustment screw built in than it also has a hole in the center. Run the piece of wire through where you see dark spots and see if they clear out. Look through the jet and see if your handywork is allowing light through. *(yes? than you found a blocked jet and just cleaned it!

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You can check for spark by getting another spark plug and using it as a tester. Leave the engine plug in place and just lay the tip of the plug on something meta/grounded and see if there is spark while cranking.
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