John Deere LX172 Lawn Tractor does not have any spark. I've checked the safety switches from the seat and transmission as well as fuses. I also tried another plug. Battery is full charge. Starter runs. Fuel supply is good. No spark at all.
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Re: Lack of Spark
If all of your tests are correct, the thing remaining is the ignition coil. A bit of a pain to get at and expensive too. Parts diagram here. Before you buy a new coil, see if there might be just a broken spark wire or loose connection at the spark plug contact end.
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Oftentimes there are switches at the blade engagement lever and under the seat...for safety reasons. I can't start my mower if the blade drive is engaged and /or I'm not in the seat. That's a clue to check , however I'd check the starter solenoid first.
Try pulling up on your PTO switch to engage the RIO switch. If it works then there is a problem with the reverse switch is located near the directional pedals/linkage or on the transmission. Attached is a picture of the switch from the John Deere parts catalog and a wiring diagram.
Wow, a tractor with points. That's rare these days. I believe your tractor was made between 1975 and 1987. It's a 200 series. Does it have the 14 hp Kohler?
Not sure about your problem. On a modern day tractor with electronic ignition, I would check the safety switch system. In your case, I would check the fuse, key switch, and look at the kill wire running off the coils to see if there is worn insulation. If you have seat safety or PTO switches check them too.
need new coil pack or have short in harness grounding engine from running. check fuel line to carburator. 1. take float bowel off bottom of carb. do not touch float or pin holding float. crank engine over until fuel comes out of carb. If fuel comes out, you don't have fuel problem. put float bowel back on carb. 2. check for spark. take spark plug out of mower. put wire back on plug and place the threads on head [or metal of engine to ground the plug]. crank engine over for a few seconds to see if plug gets spark . [always double check with another spark plug that is good]. [[ Remember!!! you have to have someone sitting on the lawnmower to start. unless you by-pass safety switch [only do this if you understand how the safety switch works. NOT EXPLAINED HERE!!!]] If spark is present, there is no grounding problem. when engine is cool. 3. CHECK COIL PACK. for continuity. When the coil pack gets hot it will stop any juice to the plug. A>Check temp sensor B> Check Safety switches grounding out. C> Check for cut wiring harnes. [loose wires rubbing against pulleys, wires cut by rodents]. Hope this helps.........................GAS
some of the safety switches will shut the spark off unplug the harness from the engine then crank it over if you have spark there is a problem with a saftey switch if you have no spark the problem is the coil
Engine wont turn over on lawn tractor. There are several kill switches that could cause the problem. The seat switch, electric pto or the clutch switch. There are also fuses in the electric circuit that could be blown. If you hear a clicking sound when you turn the key then it could be a weak battery, weak starter or the engine has locked up. If locked up remove plug and squirt oil in spark plug hole. Sometimes that helps if cylinder has been flooded with gas.
X 300 series had 2 known problems.One is the delay module under dash has been an issue scince model came out,it's the first thing I replace when I have one that comes in with no spark.The second issue is the coil grounding/kill wires have a diode in them and when one diode goes bad the engine will only have spark to the strongest coil.If you lost spark to both coils and machine still cranks I would replace the delay module under center of dash.