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Have a toro model 826le power max. it runs irregular, the whole time using it, the power goes up and down the whole time and the spark plug carbons up. whast is wrong and how do I fix it

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My JD SX 320 misfires under load (one cylinder only)

plugs will not spark under compression if they are faulty or the HT lead id off too high a resistance. or mixture is incorrect
In the real old times when plugs were cleaned and tested one of the tests were to test spark in a dry compressed air chamber where if there was a problem they failed to spark
as you have fitted new plugs it comes back to the ht lead
they are carbon tracked lined internally, the connection for the plug and cap is just a steel pin shoved up into the carbon track
try using copper ht leads where the copper wire comes out to the connection
there could be a valve seating problem or weak valve springs on that cylinder that is not allowing proper seating under compression
if you have 2 carbies then the float level for that cylinder may be too low and under load starving for fuel

Jul 16, 2016 | Garden

2 Answers

I have a toro riding mower with a 21 horse power kohler motor that wont start even with ether. I tested the plug and I am getting spark. I am getting fuel to the carburetor as well.

for it to run you need fire fuel and compression. you say you have fire. if you spray starting fluid in the carburetor then you should have fuel. pull the plug out and check the compression. sounds like a valve or valve seat is to blame.

Apr 23, 2016 | Toro Garden

1 Answer

Carbon fouling spark plugs

Weak Spark, worn piston rings(Burning oil/compression issues), lack of compression, wrong spark plugs, incorrect spark plug gap, engine not reaching operating temperature (Due to short use), carb. is running rich (May need adjusting), dirty air filter (Causing carb. to choke and run rich). Bad gas
All these symptoms could lead up to fouling plugs.
Hope This Helps.

Sep 27, 2013 | Garden

1 Answer

I just purchased a Toro e-cycler cordless mower, model # 20360. I tried plugging in the charger to the Ac outlet and the mower receptacle. My understanding is that the charger light is suppossed to be...

It could be that the batterys don't need to be changed and shouldn't be unless fully discharged, if u charge before the batteries are fully discharged u run the risk of damaging the batteries. The problem is sometimes batteries get what is called a memory charge, this means if u use your lawnmower for a short time than charge it and u do this repeatedly the batteries will only discharge for this sort time and will only charge for a sort time. Than if u need it for a big job it will seem that u have only operated it for a little time and u need to plug it in. The only way to fix the batteries is buy new ones, that way they always tell u to always fully discharge before recharging your batteries.

Sep 15, 2011 | Toro Garden

1 Answer

I have a Toro self-propelling front wheel drive mower. As I was mowing the self-propeller stopped working. I checked the oil, gas, blade but it all looks OK. The filter needs to be replaced but I'm not...

5 Rules for troubleshooting engine problems:
1. Spark
2. Compression
3. Accessories
4. Carbonation
5. Timing

Those are listed in order of how hard they are to do.First check the plug and wire.Now is a good time to change the air filter also.

Step two will require a compression gauge,if you do not have one before you go buy one.Try to start the mower.If when you pull the rope goes back in and pulls tight your compression is ok,if not buy a gauge.

Step three.Check that the cable(kill switch) attached to the handle is in good repair.

Next is the carb.You may need to clean it.Carb cleaner would be my first choice,the spray can type. Now if that still wont fix it.You need to tear down the carb and clean a small screen on the inside.That step is far from fun,but is not very hard to do.

Lastly is to check the timing.This can be done by dissembling the crank case and realigning the gears. The gears are marked so it is not as hard s it sounds.

Should none of that work,look at the belt make sure it is not broken and jammed up in the pulleys.

May 15, 2011 | Toro Garden

1 Answer

I have a problem starting my Toro Power Max 828 LE snow blower. It has fresh gas and a new spark plug. When you prime it it doesn't seem to be getting gas. It also has an electric start that is working...

Take a spray bottle and spray gas into the carb and see if it starts.If it starts you more than likely have a carb problem. first thing check and make sure gas is flowing to carb. Take the line off at the carb and see if gas flows through the line. If you have gas to the carb you will have to take carb off and clean it out and check to see if float is stuck might want to put a rebuild kit in it while it,s apart.

Dec 17, 2010 | Toro Garden

1 Answer

I have a 92 Toro riding mower with ignition problems. It recently stopped running while in use. Replacing the ignition switch did not solve the problem. I removed the spark plug, plugged the ignition wire...

Unplug all wires to the coil if no spark it is a bad coil . the wire is used to ground out and kill eng.
coil part # 398811 $41.55
No voltage goes to coil .and it will kill if it does .
good luck

Mar 05, 2009 | Garden

1 Answer

Have a toro power stage max model 826LE electric start, runs irre

Sounds like carb. may need adjusting. Take the heat box off to expose carb., there should be 2 adjustment screws- 1 on the bottom of the bowl and 1 on the side of the carb just above the edge of the bowl ( depending how the carb sets off the engine - if the carb comes straight out it will be on the side facing towards the front of the snow blower or if it goes towards the handles then standing other side of the snow blower the screw will be facing you), turn both screws in til they just bottom out the turn them out 1 1/4 turns out then start the machine. While the machine is running at low idle turn the screw on the side of the carb. in (clockwise) a little at a time listening for the engine to start to rev up and then start to rev down, bog or studder then turn back slightly to bring idle back up. Once the idle is up then the screw on the very top of the carb. turn that out to lower idle to a normal idle. Repeat those adjustments till you cant get the idle to go up anymore. Now for the screw on the bottom of the bowl- move the throttle up to max and turn the screw in till you hear it rev up higher and starts to bog or sputter then turn it back slightly to bring the high rev to a smooth rev. That should take care of it. If it does not solve it then the carb may need cleaning then the adjustments done again. If you need more help on this please feel free to ask. Sometimes you have to do process of elimination and you start with the easiest first. Also the adjustments should help with the carbon build up on the plug.

Jan 15, 2009 | Agri-Fab Agri - Fab Snow Blower - 42"

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