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I have a Toro LX425 lawn tractor with Kohler engine. Will not start. Checked fuel and spark. Oil level good. Pops through carb. Did a compression ck,150lbs. Engine has 45 hrs on it. Fuel is fresh. Was last run 2 weeks ago with no problems.

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Posted on Jan 02, 2017

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SOURCE: I have a 2006 Toro 6.75 hp GTS lawn mower. I am

Your carburetor needs cleaned,you had gas in it that you drained out and replaced with new ? What engine do you have tecumseh,briggs,? Anyway remove carburetor and take apart get acan of carburetor cleaner and spray though jets in carburetor and blow out jets be carefull not to blow out needle seat !

Posted on May 16, 2009

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SOURCE: My Toro LX425 keeps on blowing 20 amp fuses when I

a fuse will blow if: a positive wire is being grounded to the frame or two much current is being passed thru it.

Posted on Jun 29, 2009

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SOURCE: Toro lawn and garden tractor will not start all of

Remove the two wires going to the switch and use a jumper wire to bybass the safety switch if it starts replace the switch, make sure power is getting to the relay, relays have two power wires one that activates the relay coming from the physically activated safety switch the other is a power wire that is activated by the ignition switch, you must have power to the relay with ignition key on.

Posted on Jul 15, 2009

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SOURCE: hydralic drive system schematics

Z350 is not the proper model number, but if you do have the FULL and proper model number you can find toro IPLs here.
Hope this helps!

Posted on Sep 28, 2009

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SOURCE: Describe your Lawn Mower With

are you holding the lever back when you pull it, the one that stops it when you let go ?

Posted on Aug 29, 2011

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Craftsman 16.5 hp kohler gas in oil

If the machine's fuel tank is located ABOVE the level of the engine's carburettor then it is most likely a "Gravity Feed" fuel supply system .. i.e. no fuel pump reqd.
If that's the case then the carb has 'flooded' at some stage (most likely when engine was not running), and the fuel has simply flowed down thru the carb and into the intake tract, and then down into the sump via the crankcase breather tube. This is extremely common on "low end" brands which, for reasons of economy, are not equipped with low-mounted fuel tanks and fuel pumps.
The reason that the carb has flooded is usually caused by a leaking Needle & Seat (aka Float Valve) in the carb, which could simply be caused by a bit of debris stopping the inlet needle from seating, OR, the Inlet needle may need replacing.

The reason why the engine wouldn't start is simply that it was flooded ... just like cars used to do back before EFI. Drain the crankcase and re-fill with oil, remove the spark plug and let engine dry out overnight, fit a new dry plug, put throttle lever at about 1/4 open, and crank the engine (OUTDOORS!) till it starts. May take a while to fire up, and may be a bit smoky for a while, but it should go.
My advice ... NEVER even approach a lawn tractor with a gravity feed fuel system. There should be laws against them.

Nov 04, 2013 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Craftsman LTS 1500 lawn mower - model # 917.28903 started sounding funny while i was cutting VERY high grass. I turned it off immediately and it backfired as it shut off. Wouldn't restart. Waited til next...

I would check the big three first of all. Spark, compression and fuel. Sounds like you have spark and fuel. I would get a compression tester to check actual amount of compression. If all three of those things are good I would check valve lash. You will need make, model and serial number of engine. If you post these I can help find specs for you. Good luck.

Sep 14, 2013 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Murray ride on cuts our when releasing the clutch. Starts ok, have checked fuel supply to carb, air filter, spark plug, oil level .?..

Is this only when releasing the clutch? I assume it runs good other than that? I would check three things first. Compression, spark and fuel. Compression should be at least 50-60 psi. If that's good hook up an inline spark tester and start unit and observe while releasing the clutch, If you loose spark when releasing clutch if probably a safety switch(similar to safety switch on seat that grounds unit out when you get off the seat)
If you have good spark when releasing the clutch and good compression, its probably a clogged carb. This is the route I would take. I hope this helps. Good luck!

Aug 11, 2013 | Garden

1 Answer

155c john deere lawn tractor

Take the spark plug out and see what it looks like. If it's dark, sooty or wet smelling like gas, then you have a spark problem. Might need new plugs, a new coil or charging the battery up.
If the spark plug is dry and is a light tannish, brownish color than your problem is not getting gas. If that's the case, take off the fuel supply line to make sure you have gas to the carb. If that is fine, then you might need to take the carb a part to make sure you don't have plugged jets or passageways in the carb itself. If you want to find out quick, you can squirt a little gas into the carb intake and see if the the engine pops off. That will tell you as well.

Good luck

Jul 15, 2013 | Garden

1 Answer

Cub Cadet has gas, has spark, has air -still won't start/run

Are you pulling the plug to check for wetness after cranking it a few times, WITHOUT using the starting fluid? Also, I would recommend using carb cleaner in place of the starting fluid. Starting fluid runs the engine VERY hot for a brief time and can possibly damage rings, valves, and aluminum parts.

Jun 09, 2013 | Garden

1 Answer

I have a kohler 12.5 in my J.D. STX38. Starts and runs good but has a slight miss on low idle. It may have it at high idle but you cannot notice it. The carb has been taken apart,cleaned, carb kit...

hi there harryandmeli
sounds like you still have a restriction in your carb or the float level is not right
check all the opening s and jets carefully, particularly main jet and emulsion tube air bleeds
and the idle air bleed , and idle jet, is the tank clean and no water ? , is the tank breather working ?, make sure gaskets at carb flange are ok - no leaking of air , make sure air filter is not blocked ?

provided compression and spark ok,( spark should jump a 6 mm gap minimum ) to pass a coil test and fuel flow from tank to carb is good , these engines have hydraulic valve lifters and like 10w/30 kohler oil , everything being = engine should run good

remember F A C T S

F = Fuel , A = Air , C = Compression , T = Timming , S = Spark

take a look

cheers hope it helps


Sep 16, 2011 | Garden

2 Answers

Owners manual for a toro cv14s

go here they have a link where you can print your own owners manual for free....good luck

Apr 05, 2010 | Toro Lawn Mower With Toro Power Tools

1 Answer

My craftsman 15.5HP kohler riding mower turns over

Try cleaning or better yet, replacing the spark plug. Depending on age and how your tractor was maintained, there are other possible causes.
  • Gummed up fuel system
  • dirty fuel filter
  • defective or misaligned armature/magneto (part that causes your plug to spark, igniting the air/fuel mixture, thus starting the engine)
  • throttle linkage/cable problems
  • low oil level. Some Kohler engines use a low oil shut down sensor which won't allow the engine to run or start to avoid internal damage.
  • Mechanical engine problems
I hope you find this solution helpful. Please rate it thanks for using Fixya!

Nov 05, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

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