Question about Toro Wheel Horse Drive Belt For Tiller Pt114765

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Onan Model E125V Engine Backfire problem

I have tried everything listed in troble shootin manual Plus ground Valve and readjusted to spec. Carb, Cleaned and gapped coil, spark plug, Has strong ignition. Apparentley no adjustment for timming.Contacted Cummins about it with no sucess. Need Help'

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  • Eugene Rounds Dec 09, 2014

    Is it back firing thru the carburetor(Intake) or the Exhaust? Have you checked for a partially sheared flywheel key? Out the exhaust it be burning either too lean or too rich on fuel.

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 473 Answers

SOURCE: starts runs min. or two then stops....

Go to toro.com then click customer care, then click manuals and parts. Type in model no. and download the owners manual. This should get you the spark and flywheel gap. Probably still something in the carb. Some orifices are very hard to find and to clean but they must be clean. Also check for dirt dopper nest in the muffler.

Posted on Apr 06, 2009

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rycgl
  • 1545 Answers

SOURCE: i Have a 1978 Honda

Your plug is telling you the answer here. Look at this chart.
http://www.hioutput.com/tech/plug.html
i have seen engine produce the dry, black soot deposit on plugs when the timing is just a little off. Run some Seafoam thru your fuel system and it will clean the carb, the carbon, the valves...everything.

Posted on Oct 23, 2010

#1 Taper
  • 1040 Answers

SOURCE: Engine runs great for 10 minutes and then stalls.

Believe it or not, your gas cap is clogged up with dirt and debris. When a carburetor is unable to get a constant flow of air from outside, pressure builds up on the fuel tank. The fastest way to determine whether or not this is the problem is as follows.

As you are using your Mower, at that point when it begins to stall out, loosen the gas cap so that you release the pressure that is built up in the gas tank. If the engine begins to regain power, then you know it is a clogged gas cap. (Simply get a small wire and clear the breathe holes in the cap.) If the engine dies even after loosening the gas cap, then you may want to check to make sure the air breather is clean. ( A dirty air breather can cause the engine to over heat and stall out.)

If none of this seems to help, then it is probably a bad Ignition Coil.

Good Luck!

Jim

Posted on Jul 29, 2011

  • 2239 Answers

SOURCE: have two string trimmers, both hard to start. shindawa homelite 62061 & toro TB21EC. H/L does great job when it starts. Toro won't come up to speed. Have cleaned carbs in both and checked plug

When you say it will not rev up to full speed, that sounds to me like a blockage either in the spak arrester in the muffler outlet, or the exhaust port is blocked, or the muffler itself is blocked.

Posted on May 12, 2012

  • 201 Answers

SOURCE: Toro walk behind lawn mower. Model 20074. New spark plug, gapped to.030", verified that there is a spark, cleaned carburator and jets. won't start even with starting fluid. Any suggestions?

advise doing a compression test with gauge.

could be valve not seating or low compression

Posted on May 27, 2014

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