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I have a honda 3813 riding mower. When i try to start it,it backfires a litttle but will not run.?

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  • Sears Master
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Backfire usually means that it is out of time. This sometimes happens when something is hit causing the flywheel to jerk shearing the flywheel key. Remove flywheel and replace woodriff or slot key.

Posted on May 11, 2014

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  • 7 Answers

Be sure the fuel is fresh. This spring I had two pops and no start. The "gasohol" was not treated and 4 months old. Purging old fuel fixed it!

Posted on May 15, 2014

  • John Ehrhardt May 15, 2014

    Gasohol or too much fuel cleaner can also cause loss of power.

  • John Ehrhardt Apr 23, 2017

    Update - Replaced the fuel pump. Starting is one again prompt. The old pump (5yr) was providing pressure however priming the line by pressuring the fuel tank (blow on the vent tube), I noticed the forward resistance was low and starting was improved when using this procedure.



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Posted on Jan 02, 2017

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SOURCE: Craftsman 42 inch riding mower. Runs great

how old is your plug? try cleaning and regapping it or replacing it at any rate make sure it is gapped correctly also make sure there is no rust dust or debris is on flywheel or coil also the flywheel keyway does more than hold the flywheel in place it servs as a timing pin and sometimes the slightest wear on it can cause the machine to start hard but otherwise run great good luck hope you find the problem.

Posted on May 02, 2009

  • 79 Answers

SOURCE: push rod loose

Very possible that the valve is stuck open and piston could have hit valve causing it to bend at the head. This would cause valve not to close completely. Would have to remove head and remove valve and most likely replace intake valve.

Posted on Apr 09, 2009

  • 124 Answers

SOURCE: i have a Honda 2216 ride on mower when hot it

Most likely this is a valve problem caused by a carbon build up around the valves. This is not a job for the novice due to it being an overhead valve engine. Poor quality gasoline can cause this problem. I recommend that you always use white gas if it is available in your area. If it is not available try to find the gasoline that has the lightest yellow color. The darker the yellow color the more sticky varnish deposit that will be left behind. And totally avoid gasoline that has a orange color. The darker the color the more problems it will cause.

Posted on Sep 13, 2009

  • 2702 Answers

SOURCE: craftsman riding lawn mower tries to start and

it sounds like its the exhaust is blocked up or/and air filter, its the back fire that makes me think its a blocked exhaust,, iv had it before!
try taking it off and starting it up,,,,and yes its going to be noisy if it go's! untill you clean out the pipe, then put it back on again,

Posted on Nov 16, 2009

  • 6468 Answers

SOURCE: My Sears Riding Mower Runs Rough & Backfires

don't know the model but check the valve adjustment

Posted on Apr 08, 2012

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Does the gx 340 have a timing belt. I have a honda 1011 riding mower that backfires when trying to start, the fly wheel sheer pin is ok.

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May 12, 2009 | Garden

1 Answer

Push rod loose

Very possible that the valve is stuck open and piston could have hit valve causing it to bend at the head. This would cause valve not to close completely. Would have to remove head and remove valve and most likely replace intake valve.

Apr 09, 2009 | Craftsman 42 in. Deck 19.5hp Lawn Tractor

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I am looking for sevice bulletins for honda 3813 lawn tractor

I had a similar problem with my Honda 3813. When I tore it down, I found that the 3813 has a slow delay cyclinder - something like a shock absorber - the slowly puts pressure on the clutch plate after you let up on the clutch pedal. In my case, the clutch is old and worn, this is exactly the symptom I experienced because the clutch was nearly worn out - it took like 10 or more seconds to get going. A new drive clutch and a little adjustment fixed this problem for me. To replace the clutch without removing the engine I had to cut the cross brace plate on the bottom of the tractor.

To get to this you need to remove all the tin that is under the seat part of the tractor - a real nuisance.

Also, it took me 3 months to get the clutch from the Honda dealer. .... definitely not helpful! Good thing I had a John Deere as a backup, I've never had trouble getting parts quickly for that.

Mar 13, 2009 | Garden

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