Question about Craftsman 42" Briggs Stratton 20 hp Gas Powered Riding Lawn Tractor

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B&S 20hp craftsman 46" dls3500

B&S 20hp craftsman 46" dls3500 riding mower. Starts fine, runs without dying but runs rough, cleaned carb, sparkplug, filter, almost like it is running out of gas but has 3/4 tank.

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When you cleaned the carb did you clean out the metering jet with a needle and blow out. It only takes a tiny spec of dirt to raise hell with these small carbs.

Posted on Jun 08, 2013

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Posted on Jan 02, 2017

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SOURCE: how to install mower deck belt on a lt1000 craftsman riding mower

The manual will cover it.

http://www.disruptit.com/manuals/L0104168.pdf

Posted on Apr 06, 2009

wadembly
  • 475 Answers

SOURCE: Craftsman riding mower blades will not engage

maybe the safty switch under seat might be starting to go out if that switch doesn't work the blades wont come on at all for safety

Posted on Jun 28, 2009

ozark333
  • 396 Answers

SOURCE: I have a Craftsman mower LT1000 riding mower 17

Also, unplug the wires connected to the bottom of the float-bowl. Just wiggle the plug loose off the bottom of the bowl.
These are 12 volt powered when the ignition is on. Put your key in the ignition and turn it to ON. * DO NOT ATTEMPT TO START THE MOWER.*
With the key in the ON position, use a volt meter and test for 12 Volts
to the terminals of the plug. The Grey is Positive and the Black is Ground.
You should see 12 volts to this connection which powers the Fuel Shut-off solenoid. This solenoid shuts off fuel when you turn off your mower to prevent backfires (IMO-doesnt work!) If you dont see 12 volts, check the plug on the opposite side of your mower where the Grey and Black wires go to. We have had several of these connections fail due to corrosion (needs di-electric grease-Craftsman...are you listening?) Disconnect the plug and see which pins feed the Grey wire. Now test for 12 volts at the plug on the side that leads back up to the ignition switch. If you see 12 volts you know you have the same corrosion problem. Clean the pins, if you have it, a shot of di-electric grease so it wont happen again and reconnect. Test at the float-bowl connector now. Hopefully you will see 12 volts and are all set. If no voltage is at the ignition switch side of the connector you need to test the ignition switch. I believe most mowers will use a Red wire down to the connection we checked and follow that wire to the ignition switch. Tap the wire close to the switch and test for voltage. If you have voltage you know there is a break in the wire leading to the connector. If no voltage is present at the output of the ignition switch it may be time for a new one. You could test all the wires of the ignition switch for another wire that has 12 volts when the ignition is on and simply place a jumper between that wire and the Red feed wire for the solenoid. Of course this is a last resort but should work in a pinch. Good luck.

Posted on Sep 29, 2009

  • 299 Answers

SOURCE: Craftsman riding mower won't move.

yes it is a bad belt unless it is a hydro-stat(no clutch) you need to look under the mower and see if the belt is on correctly

Posted on Sep 30, 2009

  • 40 Answers

SOURCE: My craftsman 15.5HP kohler riding mower turns over

Try cleaning or better yet, replacing the spark plug. Depending on age and how your tractor was maintained, there are other possible causes.

  • Gummed up fuel system
  • dirty fuel filter
  • defective or misaligned armature/magneto (part that causes your plug to spark, igniting the air/fuel mixture, thus starting the engine)
  • throttle linkage/cable problems
  • low oil level. Some Kohler engines use a low oil shut down sensor which won't allow the engine to run or start to avoid internal damage.
  • Mechanical engine problems
I hope you find this solution helpful. Please rate it thanks for using Fixya!

Posted on Nov 05, 2009

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