John deer gx75 no start

[Jakob27724]

did you check the spark with a tester like this, or ground the plug against the engine block?. View attachment 55557

I grounded to the engine block but I had to get it positioned just right to spark

 

[Jakob27724]

Anyhow, on the ignition system, it depends on the 'age" of your engine. I believe that model uses a FC290V (if you can get the complete engine model # that will be very helpful, FC290V_ _ _ _)
Most consist of your Ignition Coil (sometimes called a magneto) View attachment 55558
Flywheel which has the magnet to produce the current and of course the spark plug.
Now, most FC290's also have an Igniter, View attachment 55559
Which is basically takes the place of points, and usually when they stop working, you have no spark at all (From my experience).

So since you've tried spraying in the fuel in the plug hole and you've got good spark, i think the next step is to remove the blower housing and check the flywheel key.
this video gives a good "general info" on the flywheel key.

you can see it's sheared in the video... now if the key is good it will make a perfect square in

 

[Jakob27724]

Anyhow, on the ignition system, it depends on the 'age" of your engine. I believe that model uses a FC290V (if you can get the complete engine model # that will be very helpful, FC290V_ _ _ _)
Most consist of your Ignition Coil (sometimes called a magneto) View attachment 55558
Flywheel which has the magnet to produce the current and of course the spark plug.
Now, most FC290's also have an Igniter, View attachment 55559
Which is basically takes the place of points, and usually when they stop working, you have no spark at all (From my experience).

So since you've tried spraying in the fuel in the plug hole and you've got good spark, i think the next step is to remove the blower housing and check the flywheel key.
this video gives a good "general info" on the flywheel key.

you can see it's sheared in the video... now if the key is good it will make a perfect square in the slot.

Yes that is the right engine and I just ordered a carb because it was a little vanished but the main jet was clear and I ordered the igniter, along with a spark plug and air filter

 

[Scrubcadet10]

Alrighty. try those before you follow my advice on the flywheel key.

 

[Hitechluddite]

I don't know of any mowers that will turn over if the safety circuits are not properly engaged. I would replace the plug first. they are cheap and a new one never hurts.

 

[VRR.DYNDNS>BIZ]

Okay. Probably so.
And did you use a spark tester, or did you ground the plug to the engine block? Plug could be bad.
The main thing in ignition timing is the flywheel key it aligns the flywheel to the crank.

The point of this question unanswered is the plug may be your cause

 

[100 td]

99% its dirty coil& flywheel contacts-remove coil=clean contacts on both with emery cloth-contact settings are thickness of a buisness card-then clean spark arrestor screen on muffler if not done--always the first checks-let me know if it works

100% it's not, he has stated it has great spark!