Question about Black & Decker 19" Electric Lawnhog Mulching Mower with Rear Bag

2 Answers

15 HP Kohler Engine RIding mower wont stay on

I charge my battery and then start the mower. It runs for 15 seconds then shuts down. I replaced the fuel filter, air filter, spark plug. 
Any help would be appreciated.
Bill G.

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  • 2 more comments 
  • Anonymous Apr 23, 2008

    It's your Coil

  • dje1 Aug 03, 2008

    No spark at the plug. New plug

  • Anonymous Mar 24, 2014

    motor will not start

  • Anonymous Mar 24, 2014

    replaced, fuel filter,air cleaner, spark plug, fuel lines, but still get no spark

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What's the gap setting between the coil and flywheel 15 hp kohler motor?

Posted on Aug 03, 2008

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If you think its not mechanical problem then its electrical. it may have a short somewhere & drain the battery

Posted on Jun 06, 2008

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Lawnboy mower model 10743 will not start


When choke not on all the way coil willnot activate and throw spark ps carby should be cleaned out properly because fuel will off evaporated leaving oil guming up needle/seat

Jul 03, 2016 | Riding Mowers & Garden Tractors

1 Answer

When I turn the key on I can hear fuel pump prime and from some where around the carburetor I hear a buzz noise.


Make/Model/Year helps get a more specific answer.

However, that buzz noise around the carburetor may be a fuel cutoff solenoid.
Note: On Riding Mowers if battery voltage drops below 9 volts when cranking or while the engine is running, the fuel solenoid will not function. That means the engine will not start or will die soon after starting.

  1. verify battery fully charged.
  2. verify the fuel cutoff solenoid clicks when you turn the key switch.
  3. Check your battery voltage before, during, and after cranking. If the battery voltage is good before but drops below 9 volts while cranking this is generally a sign the battery has one or more bad cells.
If the problem is not the fuel solenoid you will have to go step by step through the fuel, fire, and air diagnostics. Here is the routine we use on riding mowers.

For a more precise answer we need Make/Model/Year/Engine Model/Deck Size, and hours on meter if you have one.
Let's say you have less than 300 hours on the engine. Let's further assume it worked last summer, or last week, but now it's acting up. Let's also verify the battery is in good shape and fully charged.

A mechanically functional (meaning all the internal parts are working, i.e. pistons, valves, etc) engine requires 3 things, air, fuel, spark. So the quickest way to start your diagnostics is to remove the cover over the air filter and then remove the air filter. I do not recommend spraying Quick Start.

  1. remove air filter (set it aside for the rest of the diagnostics)
  2. put throttle on fast run (do not choke)
  3. pour an ounce or two (a shot glass) of fresh gas into the carburetor
  4. crank engine (15 to 20 seconds, rest to cool the starter, repeat 3 times if it does not fire at first).
Removing the air filter and placing the throttle at full speed with no choke eliminates the "air" question. Dumping in the fuel eliminated all fuel related questions. What's left? Spark. If the engine fires and runs a bit, then dies, you have eliminated the spark question. The engine started so Spark and Air are good; you have to track down a fuel problem.

If the engine does not fire, you have eliminated the Air & Fuel questions; you must tract down a Spark problem.

Tracking down fuel problems.
  1. Make sure there is plenty of fresh fuel in tank.
  2. Remove fuel line from filter and remove the filter, gas should pour out of the hose coming from the tank. If it does not, remove gas tank cap. If fuel flows now, you need to unclog the cap vent or replace the cap. If the fuel still does not flow then blow air from the filter end of the hose back up through fuel line to blow out blockage inside the gas tank. Once you have fuel flowing out the line to the filter, PUT ON A FRESH FILTER. Try cranking the engine. If it still does not start move on to the carburetor.
  3. Note: many systems have a fuel shut off solenoid. This is a small black cylinder on the bottom of the carburetor. It has two wires running to it. It should make an audible click when you turn the key on.
  4. NOTE: if battery voltage drops below 9 volts when cranking or while the engine is running, the fuel solenoid will not function. That means the engine will not start or will die soon after starting. So check your battery voltage before, during, and after cranking. If the battery voltage is good before but drops below 9 volts while cranking this is generally a sign the battery has one or more bad cells. Replace the battery. If the battery is in fact good and the voltage is still dropping you may have a bad starter motor and it is drawing too much amperage.
  5. Ck to see that the carburetor bowl is full of fuel, if not...you may have to disassemble and clean the carb at this point.
Tracking down Spark problems.
  1. verify battery fully charged.
  2. verify the fuel cutoff solenoid clicks when you turn the key switch.
  3. get fresh spark plugs and verify gap
  4. install plugs and crank. Perhaps verify spark with a spark tester.
If these simple steps do not solve the spark problem, you have a Spark problem that moves into the arena of complex. You will need to check coil gap and coil performance. If it still doesn't start you will need to diagnose the electrical system for wiring and safety switch problems, key switch problems, fuses, etc.

A Problem of Air Control.
If you determine the Spark & Fuel systems are good, the next likely problem is Valve adjustment out of wack. This is a problem of Air Control (and its sister compression), the third element in the engine trinity. Usually this problem shows up as backfire; either back through the carburetor or out through the exhaust. It will backfire while you are trying to start it. HOWEVER, it does not always generate backfire. You may instead notice that the engine spins more freely than usual; or oddly enough just the opposite and the engine bind while you are cranking it. This is because the compression is lost by out of wack valves or the compression is out of sync with the spark. You need a valve adjustment.

Once you get it running be sure to replace the Air Filter with a new one.

These simple steps solve most starting and running questions and problems.

Mar 19, 2015 | Riding Mowers & Garden Tractors

1 Answer

120john deere wont start seems like its not getting fuel will start withquick start


More and better information will help you get quicker and better answers. I will assume you are asking about a JD LA120 or D120 or L120 or perhaps even an X120. However, these models do not have fuel injectors.

Many things to consider but, let's try the simple things. You didn't say, so I am going to assume the mower is at least newish, not 30 years old. Let's say you have less than 300 hours on the engine. Let's further assume it worked last summer, or last week, but now it's acting up. Let's also verify the battery is in good shape and fully charged.

A mechanically functional (meaning all the internal parts are working, i.e. pistons, valves, etc) engine requires 3 things, air, fuel, spark. So the quickest way to start your diagnostics is to remove the cover over the air filter and then remove the air filter. I do not recommend spraying Quick Start.

  1. remove air filter
  2. put throttle on fast run (do not choke)
  3. pour an ounce or two of fresh gas into the carburetor
  4. crank engine (15 to 20 seconds, rest to cool the starter, repeat 3 times if it does not fire at first).
Removing the air filter and placing the throttle at full speed, no choke, eliminates the "air" question. Dumping in the fuel eliminated all fuel related questions. What's left? Spark. If the engine fires and runs a bit, then dies, you have eliminated the spark question. The engine started so Spark and Air are good; you have to track down a fuel problem.

If the engine does not fire, you have eliminated the Air & Fuel questions; you must tract down a Spark problem.

Tracking down fuel problems.
  1. Make sure there is plenty of fresh fuel in tank.
  2. Remove fuel line from filter and remove the filter, gas should pour out of the hose coming from the tank. If it does not, remove gas tank cap. If fuel flows now, you need to unclog the cap vent or replace the cap. If the fuel still does not flow then blow air from the filter end of the hose back up through fuel line to blow out blockage inside the gas tank. Once you have fuel flowing out the line to the filter, PUT ON A FRESH FILTER. Try cranking the engine. If it still does not start move on to the carburetor.
  3. Note: many systems have a fuel shut off solenoid. This is a small black cylinder on the bottom of the carburetor. It has two wires running to it. It should make an audible click when you turn the key on.
  4. NOTE: if battery voltage drops below 9 volts when cranking or while the engine is running, the fuel solenoid will not function. That means the engine will not start or will die soon after starting. So check your battery voltage before, during, and after cranking. If the battery voltage is good before but drops below 9 volts while cranking this is generally a sign the battery has one or more bad cells. Replace the battery. If the battery is in fact good and the voltage is still dropping you may have a bad starter motor and it is drawing to much amperage.
  5. Ck to see that the carburetor bowl is full of fuel, if not...you may have to remove, disassemble and clean the carb at this point.
Tracking down Spark problems.
  1. verify battery fully charged.
  2. verify the fuel cutoff solenoid clicks when you turn the key switch
  3. get fresh spark plugs and verify gap
  4. install plugs and crank.Perhaps verify spark with a spark testor
If these simple steps do not solve the spark problem, you have a Spark problem that moves into the arena of complex. You will need to check coil gap and coil performance. If it still doesn't start you will need to diagnose the electrical system for wiring and safety switch problems, key switch problems, fuses, etc.

Once you get it running be sure to replace the Air Filter with a new one.

These simple steps solve most starting and running questions and problems.

Mar 10, 2015 | Riding Mowers & Garden Tractors

1 Answer

Cold start will run short time then die battery not strong enough to realy spin moter


Many things to consider but, let's try the simple things. You didn't say, so I am going to assume the mower is at least newish, not 30 years old. Let's say you have less than 300 hours on the engine. Let's further assume it worked last summer, or last week, but now it's acting up. Let's also verify the battery is in good shape and fully charged.

A mechanically functional (meaning all the internal parts are working, i.e. pistons, valves, etc) engine requires 3 things, air, fuel, spark. So the quickest way to start your diagnostics is to remove the cover over the air filter and then remove the air filter. I do not recommend spraying Quick Start.
  1. remove air filter
  2. put throttle on fast run (do not choke)
  3. pour an ounce or two of fresh gas into the carburetor
  4. crank engine (15 to 20 seconds, rest to cool the starter, repeat 3 times if it does not fire at first).
Removing the air filter and placing the throttle at full speed, no choke, eliminates the "air" question. Dumping in the fuel eliminated all fuel related questions. What's left? Spark. If the engine fires and runs a bit, then dies, you have eliminated the spark question. The engine started so Spark and Air are good; you have to track down a fuel problem.

If the engine does not fire, you have eliminated the Air & Fuel questions; you must tract down a Spark problem.

Tracking down fuel problems.
  1. Make sure there is plenty of fresh fuel in tank.
  2. Remove fuel line from filter and remove the filter, gas should pour out of the hose coming from the tank. If it does not, remove gas tank cap. If fuel flows now, you need to unclog the cap vent or replace the cap. If the fuel still does not flow then blow air from the filter end of the hose back up through fuel line to blow out blockage inside the gas tank. Once you have fuel flowing out the line to the filter, PUT ON A FRESH FILTER. Try cranking the engine. If it still does not start move on to the carburetor.
  3. Note: many systems have a fuel shut off solenoid. This is a small black cylinder on the bottom of the carburetor. It has two wires running to it. It should make an audible click when you turn the key on.
  4. NOTE: if battery voltage drops below 9 volts when cranking or while the engine is running, the fuel solenoid will not function. That means the engine will not start or will die soon after starting. So check your battery voltage before, during, and after cranking. If the battery voltage is good before but drops below 9 volts while cranking this is generally a sign the battery has one or more bad cells. Replace the battery. If the battery is in fact good and the voltage is still dropping you may have a bad starter motor and it is drawing to much amperage.
  5. Ck to see that the carburetor bowl is full of fuel, if not...you may have to disassemble and clean the carb at this point.
Tracking down Spark problems.
  1. verify battery fully charged.
  2. verify the fuel cutoff solenoid clicks when you turn the key switch
  3. get fresh spark plugs and verify gap
  4. install plugs and crank.Perhaps verify spark with a spark testor
If these simple steps do not solve the spark problem, you have a Spark problem that moves into the arena of complex. You will need to check coil gap and coil performance. If it still doesn't start you will need to diagnose the electrical system for wiring and safety switch problems, key switch problems, fuses, etc.

Once you get it running be sure to replace the Air Filter with a new one.

These simple steps solve most starting and running questions and problems.

Mar 10, 2015 | Riding Mowers & Garden Tractors

1 Answer

Trying to start and it will run for a few seconds then stop running what can I try


Your problem sounds like it comes from a fuel availability problem.

Let's say you have less than 300 hours on the engine. Let's further assume it worked last summer, or last week, but now it's acting up. Let's also verify the battery is in good shape and fully charged.

A mechanically functional (meaning all the internal parts are working, i.e. pistons, valves, etc) engine requires 3 things, air, fuel, spark. So the quickest way to start your diagnostics is to remove the cover over the air filter and then remove the air filter. I do not recommend spraying Quick Start.
  1. remove air filter (set it aside for the rest of the diagnostics)
  2. put throttle on fast run (do not choke)
  3. pour an ounce or two (a shot glass) of fresh gas into the carburetor
  4. crank engine (15 to 20 seconds, rest to cool the starter, repeat 3 times if it does not fire at first).
Removing the air filter and placing the throttle at full speed with no choke eliminates the "air" question. Dumping in the fuel eliminated all fuel related questions. What's left? Spark. If the engine fires and runs a bit, then dies, you have eliminated the spark question. The engine started so Spark and Air are good; you have to track down a fuel problem.

If the engine does not fire, you have eliminated the Air & Fuel questions; you must tract down a Spark problem.

Tracking down fuel problems.
  1. Make sure there is plenty of fresh fuel in tank.
  2. Remove fuel line from filter and remove the filter, gas should pour out of the hose coming from the tank. If it does not, remove gas tank cap. If fuel flows now, you need to unclog the cap vent or replace the cap. If the fuel still does not flow then blow air from the filter end of the hose back up through fuel line to blow out blockage inside the gas tank. Once you have fuel flowing out the line to the filter, PUT ON A FRESH FILTER. Try cranking the engine. If it still does not start move on to the carburetor.
  3. Note: many systems have a fuel shut off solenoid. This is a small black cylinder on the bottom of the carburetor. It has two wires running to it. It should make an audible click when you turn the key on.
  4. NOTE: if battery voltage drops below 9 volts when cranking or while the engine is running, the fuel solenoid will not function. That means the engine will not start or will die soon after starting. So check your battery voltage before, during, and after cranking. If the battery voltage is good before but drops below 9 volts while cranking this is generally a sign the battery has one or more bad cells. Replace the battery. If the battery is in fact good and the voltage is still dropping you may have a bad starter motor and it is drawing too much amperage.
  5. Ck to see that the carburetor bowl is full of fuel, if not...you may have to disassemble and clean the carb at this point.
Tracking down Spark problems.
  1. verify battery fully charged.
  2. verify the fuel cutoff solenoid clicks when you turn the key switch
  3. get fresh spark plugs and verify gap
  4. install plugs and crank. Perhaps verify spark with a spark testor
If these simple steps do not solve the spark problem, you have a Spark problem that moves into the arena of complex. You will need to check coil gap and coil performance. If it still doesn't start you will need to diagnose the electrical system for wiring and safety switch problems, key switch problems, fuses, etc.

A Problem of Air Control.
If you determine the Spark & Fuel systems are good, the next likely problem is Valve adjustment out of wack. This is a problem of Air Control (and its sister compression), the third element in the engine trinity. Usually this problem shows up as backfire; either back through the carburetor or out through the exhaust. It will backfire while you are trying to start it. HOWEVER, it does not always generate backfire. You may instead notice that the engine spins more freely than usual; or oddly enough just the opposite and the engine bind while you are cranking it. This is because the compression is lost by out of wack valves or the compression is out of sync with the spark. You need a valve adjustment.

Once you get it running be sure to replace the Air Filter with a new one.

These simple steps solve most starting and running questions and problems.

Mar 09, 2015 | Riding Mowers & Garden Tractors

2 Answers

My John Deer riding Lawn mower will start and run for a few minutes then it quits and it won't restart. Could you help me with what it could be. My husband is ready to take the hammer to it


try starting it when it stops squirt some starting fluid in it try to start if it starts bad carb rebiuld it if not bad valve seat have to take to shop to get fixed

Oct 10, 2014 | Riding Mowers & Garden Tractors

2 Answers

My d100 will not start


Check for good , strong spark. Take spark plug out and ground the outer core of the plug to the engine. Hold the plug with a pair of insulated pliers. Have someone crank the engine while you observe for a good strong blue spark. If the spark looks nice and bluish, then next would be to clean the carburetor. I suggest trying a "quick clean before taking the carburetor bowl off. Take spray carburetor cleaner and spray inside the carb throat with the air cleaner off. Also take about 1/2 can/bottle of fuel line injection cleaner and put it in the gas tank. Then try starting the mower. May sure the gas in the tank is fresh.

Jun 20, 2014 | John Deere Riding Mowers & Garden Tractors

1 Answer

I HAVE FUEL, COMPRECION AND GOOD SPARK, BUT WHEN A CRANK THE ENGINE IT TUNS BUT IT WONT RUN,


Many things to consider but, let's try the simple things. You didn't say, so I am going to assume the mower is at least newish, not 30 years old. Let's say you have less than 300 hours on the engine. Let's further assume it worked last summer, or last week, but now it's acting up. Let's also verify the battery is in good shape and fully charged.

A mechanically functional (meaning all the internal parts are working, i.e. pistons, valves, etc) engine requires 3 things, air, fuel, spark. So the quickest way to start your diagnostics is to remove the cover over the air filter and then remove the air filter. I do not recommend spraying Quick Start.
  1. remove air filter
  2. put throttle on fast run (do not choke)
  3. pour an ounce or two of fresh gas into the carburetor
  4. crank engine (15 to 20 seconds, rest to cool the starter, repeat 3 times if it does not fire at first).
Removing the air filter and placing the throttle at full speed, no choke, eliminates the "air" question. Dumping in the fuel eliminated all fuel related questions. What's left? Spark. If the engine fires and runs a bit, then dies, you have eliminated the spark question. The engine started so Spark and Air are good; you have to track down a fuel problem.

If the engine does not fire, you have eliminated the Air & Fuel questions; you must tract down a Spark problem.

Tracking down fuel problems.
  1. Make sure there is plenty of fresh fuel in tank.
  2. Remove fuel line from filter and remove the filter, gas should pour out of the hose coming from the tank. If it does not, remove gas tank cap. If fuel flows now, you need to unclog the cap vent or replace the cap. If the fuel still does not flow then blow air from the filter end of the hose back up through fuel line to blow out blockage inside the gas tank. Once you have fuel flowing out the line to the filter, PUT ON A FRESH FILTER. Try cranking the engine. If it still does not start move on to the carburetor.
  3. Note: many systems have a fuel shut off solenoid. This is a small black cylinder on the bottom of the carburetor. It has two wires running to it. It should make an audible click when you turn the key on.
  4. NOTE: if battery voltage drops below 9 volts when cranking or while the engine is running, the fuel solenoid will not function. That means the engine will not start or will die soon after starting. So check your battery voltage before, during, and after cranking. If the battery voltage is good before but drops below 9 volts while cranking this is generally a sign the battery has one or more bad cells. Replace the battery. If the battery is in fact good and the voltage is still dropping you may have a bad starter motor and it is drawing to much amperage.
  5. Ck to see that the carburetor bowl is full of fuel, if not...you may have to disassemble and clean the carb at this point.
Tracking down Spark problems.
  1. verify battery fully charged.
  2. verify the fuel cutoff solenoid clicks when you turn the key switch
  3. get fresh spark plugs and verify gap
  4. install plugs and crank.Perhaps verify spark with a spark testor
If these simple steps do not solve the spark problem, you have a Spark problem that moves into the arena of complex. You will need to check coil gap and coil performance. If it still doesn't start you will need to diagnose the electrical system for wiring and safety switch problems, key switch problems, fuses, etc.

Once you get it running be sure to replace the Air Filter with a new one.

These simple steps solve most starting and running questions and problems.

Feb 11, 2014 | John Deere 22HP VTwin 48" Riding Mower

2 Answers

Craftsman YT 4000 Won't Start


Did you check for "spark" at the plug? Check fuel filter ( maybe plugged up ". How fresh is the gas?

Nov 10, 2013 | Craftsman YT 4000 42" Briggs Stratton 24...

1 Answer

New battery re-charged but still wont fire


Check for spark
If yes, it is getting FIRE, just needs AIR and FUEL

Give it a 5-second shot or two of Starting Fluid (Ether) through the Air intake (filter) and try to start

Does it kick and run really fast and then stop?

If not, pull the plug, clean and check for GAP of 2-3 matchbook covers. Retry. Does it run (or try to)?

If it does, Now we have to look at Clogged air or fuel filter or water in line(s)

Remove air filter. Try ether again. If it starts and runs, replace or clean air filter. Done!

If not... Replace AIR filter and Drain fuel into metal or Glass jug, take off fuel filter, open and drain fuel bowl. Replace fuel filter, refill tank, prime, give it a shot of ether and try again. If it runs, Done!

If it still will not stay running, but you can coax it by giving it a blast every 5-10sec, it could be linkage, stuck choke, throttle plate or jets. Give carb a good cleaning, check throttle plate (in carb throat between it and Air Cleaner) and.check Choke. Try again.

If it still will not run, take to mower mechanic.

Mar 26, 2009 | Riding Mowers & Garden Tractors

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