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Have sears riding mower model 917.276780 when done using mower for the day and next day try to start have to remove spark plug and clear out cyl of gas that has leaked into then put back plug start an

Cul fills up with after shut off

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I would start by checking your fuel line for pinholes.

Posted on Mar 30, 2014


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SOURCE: My craftsman push mower won't start, I changed the spark plug, I need to download the owners manual for help. The model @ is 917.373981

Here is the manual for your Craftsman

Posted on Apr 11, 2012

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SOURCE: riding lawn mower hydrostatic drive is jerky like it is sliping sears model #917273780

You might want to re-post this question in the lawn mowers section.

Posted on Aug 18, 2012

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My sears lawn mower, model # 917.388100, has started becoming difficult to start on the first use of the day. After it starts and is used it will start every time on the first pull. What gives?

if it is a bit old , then check that the primer bulb is in good condition
no primer bulb check replace the spark plug or rebuild the carby as the diaphragm is probably getting hard and leaking fuel back to the tank

Nov 30, 2016 | Sears Garden

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Have fuel and spark but mower still wont start

Hi James:
Just because there is fuel getting to the carb does not mean it is getting through it.
There should be a drain plug on the bottom of the carb. Drain some gas just to make sure any contaminates are removed.
Try removing the air filter and squirting a little (like a thimble full) of gas into the carb intake. Some machines like to be primed. My Sears Craftsman has been hard to start from day one. It just likes a prime. Then runs fine.

May 13, 2015 | Garden

1 Answer

My Sears Riding Mower Runs Rough & Backfires

don't know the model but check the valve adjustment

Apr 07, 2012 | Garden

1 Answer

I have a yardman lawnmower it has gas, oil level is good but wont start,even after priming, priming is 3 pushes of the prime button, i did as directed and still wont start after pulling the cord for 15...

If the fuel pumped when you prime then the next step would be to check the spark. This can be done by removing the spark plug and then reattaching the wire to the plug and grounding the plug to the engine block. Then you need to have someone to try and start it, while watching for spark. It is easier to see if this is not done in bright sunlight. If no spark seen or heard, then it is either the spark plug or the ignition module, most likely the spark plug. If you have another machine available you can pull the plug wire and hook it to the plug from your mower and ground it to the block and try starting. If you get good spark, then the problem is the ignition module, if no spark, then replace plug.

Sep 15, 2011 | Yard Man Garden

1 Answer

I have a John Deere riding mower Model RX75 which will not start, I replaced the spark plug and it ran just fine for one day except that it Back-fired when I shut it off it never did this in all the years...

Weak spark can be caused by a bad ignition coil. The ignition coil is located under the engine fan/shroud, next to the flywheel. Check to make sure the coil lead and plug cap are not grounding against the engine robbing your spark as well.

Aug 03, 2011 | John Deere Garden

1 Answer

I can start my craftman 6.5 ,21"mower mulcher. Spart plug is new.Gasoline is fresh.

Does the mower have spark to the plug? Remove the spark plug & reinstall into spark plug wire. Next you will need to get spark plug electrode next to a metal object on the mower engine & pull the cord & see if there is a spark-(do not hold onto the plug with your hand when doing this as you will get a jolt if there is a spark)-if there is no spark then chances are that your flywheel is rusted where coil gets its signal from or you have a bad coil itself. If there is spark are you getting gas to engine? Try a small amount of starting fluid sprayed into carb filter & see if it will run, if so could be a blockage in screw that holds carb bowl on-(has a small hole in the very bottom)-and bowl probably has sediment in it also. Be careful when removing carb bowl & in most cases seal can be re-used.

Dec 20, 2010 | Garden

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My engine has loss power I have changed all filters and oil clean spark plug and have checked muffler. Still same problem What do I check next. Its a sear 17.5 hp lawn tractor

If it has a two cylinder B&S engine I would trying running it alone one one cylinder and then the other. This can be done simply by pulling off one plug wire starting the engine and then do the same with the other plug wire pulled. It is not rare to get bent valve push rods on these engines and a bent valve push rod will kill its cylinder causing lack of power. If it runs with one wire off, but not the other then you are on to the problem.

Oct 25, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

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Sears craftsman rider mower model #917.276815 will not start. ran out of gas and after re-fueling,would not start what to do? also don''t know how to change the spark plug inthat unit - can''t find it


Apr 05, 2010 | Craftsman 20 Hp 42" Deck Lawn Tractor

2 Answers

Mower runs for about 20 minutes cuts off. Acks

Make sure that the gas cap is allowing air to enter through the small hole. If not, a vacuum will build up and the engine can't get gas. You could try running it with the gas cap on loosely. If that doesn't fix it, the next time it stalls quickly remove the spark plug and see if it is wet. If it is, you will know it's an electrical problem.

Aug 29, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

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