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Anonymous Posted on Sep 02, 2014

Lawn mower instructions why wont it work

Wont start,replaced spark plug checked oil and fuel everything is good?

1 Answer

charles beach

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  • Master 1,917 Answers
  • Posted on Sep 03, 2014
charles beach
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Joined: Apr 21, 2014
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Check for spark at plug if spark at plug then squirt some starting starting fluid in carb see if will start it should run long enough to burn out starting fluid if does check for water in gas if is drain tank and carb bowl put in fresh gas not and repeat not old gas you were using strat lawn mower if still dosnt start rebuild carb and add and additive called seafoam to the gas this is good stuff follow instrution on bottle

4 Related Answers

Anonymous

  • 88 Answers
  • Posted on Aug 30, 2009

SOURCE: no spark from spark plug in honda lawn mower

the pionts could be bad try changing them

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john andrew manchook

  • 755 Answers
  • Posted on Jul 19, 2010

SOURCE: yard machine lawn mower 11A414E029 shut down in

Your mower quits in the middle of mowing and wont restart. The problem is most likely a weak or damaged coil. The hotter the engine gets the worse the spark becomes to the point where it will no longer ignite the fuel. The problem rights itself when the mower cools down.

The good news is: You can buy a replacement coil for a reasonable price off the internet *(Ebay perhaps?) and do the job yourself if you have modest skills with basic hand tools. *(all you need is a socket set and something to set the coil gap....I use a business card myself!)

If the mower is in relatively good shape and you want another 4-5 years of service out of it this isnt a bad way to go. If the unit has other issues like bad wheels, handles or excessive engine wear then a new mower might be a better use of your time and money.

hunter19_46m

Curtis Sewell

  • 7482 Answers
  • Posted on Jul 16, 2011

SOURCE: I have a power pro push lawn mower 5 hp that wont

Hi captnblys...


Sounds like you have dirt/debris in your caburetor jets,fuel passages or a diaphgram that is becoming non-flexible.
Check/Clean/Replace your Air Filter, a dirty air filter can make your engine run to rich with fuel.
Note: ALWAYS USE COMPRESSED AIR TO CLEAN YOUR JETS AND PASSAGES, VERY IMPORTANT.
Note:Before you disassemble the carburetor:
Mark each piece with a awl, or some kind of instrument that will make an alignment scratch before you disassemble the carburetor into separate pieces.
That way you will know which way it goes back together when you reassemble it.
Sometimes you can get by with priming the carburetor or by using starting fluid and letting it run a few times like that, and it will flush the gunk out of the jets,but most of the time you will need to rebuild the carburetor.
Be sure to check your fuel tank for water and dirt/debris, if there is water/debris then you need to clean your tank.
Check you fuel line condition after a while they will degrade and need replacment.
Check/Clean/Replace your fuel filter if you have one..
If the mower is over a couple of years old, then I recommend that you buy and install a new carburetor repair kit,because the diaphragm will get hard and that will cause it to be hard to crank.
The diaphgram may look good and flexible, but it can be deceiving and not act as a fuel pump as it should because it has become too hard and will cause hard starting,start and run and shut off, etc.
When you clean your carburetor, I recommend that you use a laquer thinner type cleaner to clean and dissolve the laquer build-up in the float and needle jet passages.
Be sure to remove all plastic and rubber parts before using the laquer thinner because it can dissolve the plastic parts and render them unuseable.
Be sure to use COMPRESSED AIR to blow out all the fuel and air passages.The higher air pressure is needed to blow some of the trash/debris from the fuel or air passages.
Be careful when blowing out the passages, because there are sometimes small rubber type seats in the bottom of some of the passages.
Keep in mind that the float (if you have one) for the carburetor must be level when you go to reassemble the carburetor or follow the instructions you get with the carburetor kit, or you could also ask the parts man that you get your kit from.
When you clean your carburetor and remove the jet screws, you will first need to lightly seat the jet screws.
But before you lightly seat the jet screws count the number of turns it takes to seat the jet screws from their original position.
Be sure to mark the turns down on a piece of paper.
That way when you put the jets back in, you know to lightly seat them first and then turn them back out to their original position before you started.

jlgprop

Jeffrey Geyer

  • 352 Answers
  • Posted on Apr 05, 2014

SOURCE: Poulan 6.75 Lawn mower will not start

FOR SURE CHECK ALL PREVIOUSLY MENTIONED ITEMS , TRY THIS...ALMOST GUARANTEE IT WILL RUN............ REMOVE "ALL" OLD FUEL, REFILL WITH FRESH HIGHEST OCTANE FUEL. REPLACE SPARK PLUG (YES, EVEN IF IT LOOKS OK!) GAIN ACCESS TO CARB OPENING, REMOVE AIR FILTER..OR WHATEVER. USING SPRAY CARB CLEANER, FILL ENTIRE CARB AND FLOATBOWL WITH CLEANER....WAIT OVERNIGHT IF POSSIBLE..IT WILL EVAPORATE. NEXT DAY SHOOT MORE INTO CARB..GETTING ANY JETS, ORIFICES ETC..FILL FLOAT BOWL AGAIN. P.S. CLEAN OR REPLACE AIR FILTER IF NEEDED! WAIT A WHILE, GAP NEW SPARK PLUG, INTRODUCE APPROX. 1-2 OZ. OF FRESH GAS INTO PLUG HOLE...QUICKLY RE-INSTALL SPARK PLUG ..WITH ON/OFF SWITCH-BAR OFF..PULL OR CRANK ENGINE A FEW TIMES. MAKE SURE IGNITION CAN FIRE, CRANK(ELECT. START) OR PULL STARTER ROPE & MOWER SHOULD FIRE OVER. IF IT STARTS..RUNS..THEN STALLS (AFTER USING UP GAS IN CARB, TRY IT AGAIN. IF IT CONTINUES TO STALL QUICKLY...YOU WILL NEED AT LEAST A CARBURATOR REBUILD, OR IF NO START AT ALL..YOU NEED TO SEE IF PLUG IS FIRING.

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1answer

22' snapper walk behind mowewont start .cleaned spark plug and still wont start .swapped spark plugs from another mower that does work and the other mower starts with the snapper mower's spark plug .

You need several things for a running internal combustion engine:
  • Air
  • Spark (to start)
  • Fuel
  • Compression
  • Lubrication
  • Exhaust.
You've shown that you have a workable spark plug so far. Going from the above, consider as well
  • Fuel. Bad / old / contaminated fuel. Clogged fuel filter. If it's a motor that needs gas/oil mix, does your gas have the right oil mix?
  • Air: Dirty, clogged air filter or air inlet.
  • Spark. Is any electricity making it to that proven-workable spark plug?
  • Compression. For this one, the most likely problem (other than a toss-the-engine thing like a broken piston) would be if the spark plug is not tightened into the mount hole, allowing the air to leak out rather than compress.
  • Exhaust. Most lawn mowers will have a spark arrestor on the exhaust to make sure you don't set a dry yard on fire with your exhaust. It's often overlooked in diagnosing two-stroke engines. Make sure it's not clogged or blocked.
  • Lubrication. Is there oil of the right type, and up to a proper level on the dipstick. No oil equals way too much friction in the engine.
Good Luck!

DH
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Toro ride on wont start

Battery required? Charge battery or replace. Replace air filter and spark plug. Dump out old oil and replace with 30w oil. Electric start may have a fuse blown. Dump out old gas fill with new with Stabile always added to gas. Try spraying starter spray in carb at air cleaner with filter removed. All mowers have a low oil sensor to prevent starting on low oil. Remove bowl from carb, should be full of gas. Pinch off fuel line with pliers or turn fuel valve off. Check float should be hanging down allowing fuel flow. Float up stops fuel flow.
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Toro recycler model number SR-21 S lawn mower wont start changed plug, filter, new gas. Mower ran for two lawn cuttings but seemed to overheat and choke out frequintly in high grass now it wont start at...

check your oil is it up to full, then I would check to see if you have compresson, pull your plug and roll over and feel with finger ,but don't touch spark plug wire or you will light up! next I would check for spark, then for fuel, make sure the carb is getting fuel,,,check your hoses and fuel cap and clean your carb and needle/seat and make sure gas will run through the fuel line. Also you could have sheared a flywheel key

the choke out you are talking about could of been a lean condition and smoked the eng rings
Good Luck compresson test should tell all 2StrokeJim
1helpful
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It wont start. Fuels good. Gets a spark, although plug looks oily. Air filter was dirty, have new one. Still wont start with filter off. Tried starter fluid. Manual says maybe excess oil in engine. If so,...

If you have no sign of life with starter fluid, there's no spark in the cylinder.

If the plug is oily, it may spark in free air, but not under compression. Try a new plug first.

Excess oil won't prevent the engine from starting, but it will spew oil everywhere if it's overfilled. Just check the level with the dipstick (on level ground), and pour any excess out of the filler tube.
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Lawn Mower will not stay running then will not restart

I think we all understand the frustation penaone.
I noticed u didn't clean the fuel tank, water, dirt, and rust in it can give u problems. But u need to clean the lines and carb. again also. One of the kids filled my mower gas tank with driveway gravel once, and after I cleaned things out, the mower never run so good. Also your spark may be grounding out somewhere before it gets to the spark plug. Check for a bad spot in the wires from the magneto. Some of that may be behind the flywheel though.

ballping
2helpful
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Lawn mower cranck but wont start...

Since you already checked for spark and air I would drain all the fuel out of it and check that fuel for water. Over time some lawn mowers end up with contaminated fuel. You can see the water sitting on the bottom of the fuel if you let it stand for a bit in a small plastic bowl.

Be sure to empty and dry out you fuel can as well. Especially if the mower stopped running right after a refuel. Which is a good sign your gas can is contaminated too.
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Lawn boy 2 cycle mower won't start

Replace the spark plug and retry.
If a new plug does not work push the spring button on the bottom of the carburetor to make sure fresh fuel is in the fuel bowl.
if this does not work remove the spark plug and squirt some light oil (like wd 40) right into the spark plug hole; roll the engine over slowly a couple times using the starter rope. put the plug back in and snap the plug wire in place. If the mower now starts after a couple pulls it means the rings are worn, replace the rings.
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Nannie what can be wrong with my power devil petrol lawn mower the engine wont keep running then cuts out petrol and oil ok

Check air filter, check screen in bottom of fuel tank,
New spark plug and also check the spark.
If there is a weak spark, the coil may need to be replaced.

If you have good spark, clean air filter, and clean fuel tank screen, then the carberator will need to be pulled of and cleaned out with solvent
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Briggs & Stratton lawnmower wont start!

I agree. you have oil where it shouldn't be. Remove spark plug and pull the rope a few times clean the plug and install it again.
May 09, 2009 • Garden
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