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917 289104 I purchased a Sears Craftsman lawn tractor about four years ago. It has a 540cc 20.0 HP Gold Edition B&S engine. Ever since I first purchased it new from Sears I have trouble with the engine stalling when the gas tank gets about half empty. The fuel is gravity feed and does not have a fuel pump. I replaced the fuel line and fuel filter but it did not help. Is there something wrong with my carburetor? I have tried tying up the fuel line to help the flow of fuel but there is not a solid flow of fuel past the fuel filter. There just does not seem to be enough suction of fuel to the carburetor. This engine can be fitted with an optional fuel filter, but I do not want to buy one if it something wrong with the carb. What do you recommend? HELP!!!

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Odd that it has had the issue since new. Could be the gas cap vent is plugged. Maybe paint over the vent hole? When it stalls, open the cap and listen for air entering the tank. Does it quit after running it for a while? Or does it quit regardless of run time when the tank is less than half full?

Posted on Nov 26, 2013

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I had the exact same problem with two 14 HP V-twin Vanguard B & S motors I had on my Fradan ground [leaf] blowers- they were gravity fed, too. Once the fuel level went to the half way mark, they would die out. Same thing on a small incline with a full tank of gas. It use to drive me up the wall I called around to three outdoor power equipment repair shops and got the same answer- that particular model needed to be retrofitted with fuel pumps. Problem solved.

Posted on Nov 26, 2013


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Posted on Jan 02, 2017

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SOURCE: Engine starts, but stalls when clutch is released.

The is a safety switch located underneath the mower, in the dashboard area. This switch will not pass voltage to the ignition system unless the pedal is depressed, or the deck is not all the way up. However, your culprit is most likely the pto (power take off) switch on the dash that engages the blades. It will not allow the mower to start, if pulled, and if faulty will shut off ignition power when you release the pedal. First. You'll need a volunteer to sit on the mower and operate the controls.  Now put the deck down and with the pedal depressed start the engine. Nothing should happen, if it does replace the deck switch Sears part number #176138 mentioned above. Now raise the deck and release the pedal. Again, nothing should happen. Same solution if it does. If nothing happens on both tests the switch is ok. NOW. Behind the dash, find the pto switch, and squeeze the sides, depressing two clips that hold it in the dash. You should now be able to slide it though the dash, wiring attached. Unplug the switch. With pedal depressed, deck up, someone sitting on the seat, start the mower. Now release the pedal (making sure to block the wheels and have the transmission handle is in the neutral position. If the engine continues to run, you found the problem. Replace the PTO switch. Sears part number # 174651. Also, check the plug to the pto, ignition and deck switches for corrosion as this is a common problem, though not likely to cause yours, it could. Good luck, and please let us know the outcome, good or bad. Thanks so much.

Posted on Nov 16, 2008

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SOURCE: I have a Craftsman 42 in. 15.5 hp lawn tractor

check an see if the cabuerator is getting fuel and check make sure sparkplug is getting continous fire from the coil

Posted on Sep 13, 2010

  • 1 Answer

SOURCE: I've got a 2004 18.5hp rider model#917.273811

When I engage the the lever for the blades to work, they dont always work. I have to engage several times or put the mower in gear and pop the clutch to get them to work. Any ideas?

Posted on Apr 07, 2011

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SOURCE: I have A craftsman Model 917.273470 with a Kohler 20 Hp V-Twin. It will run if I spray gas in the carb. Drained old fuel, replaced fuel filter, checked gas flow into carb with pressure guage, Cleaned

check the solenoid on the bottom of the carb check for movement and power if it moves and has power open the carb and clean it

Posted on Apr 19, 2012

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SOURCE: Craftsman lawn tractor backfiring

clean the jets inside the carb

Posted on Aug 08, 2012

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