Murray riding lawn tractor model #400600x8 turns but does not start

[Dario_7]

Since we have no idea what engine you have we can only guess...



With this bit of info I would be curious what the flywheel key looks like.

it is a briggs and stratton 18 HP model number 31D777, what do you mean what the flywheel looks like, do you think that may be the problem? thanks for your help

 

[lugnut1]

I have this murray lawn tractor that did not turn at first. I checked and found that fuse was burned out so I replaced it. Now it turns but won't start. I figured it is something with a safety switch so I bypassed the seat safety switch and now it turns on but as soon as I release the brake/clutch it turns off. I checked the safety switch and it seems to be working properly but am not sure because my multimeter is a cheaper one. Could this be that I just need to replace this safety switch or is it the clutch safety switch (which I cannot find anywhere)? Please let me know if anyone has any ideas, I have the tractor in my driveway and can't move it cause it does not have a neutral position and is very heavy to drag cause it's in park when off. Thank you

are you sure you have the model number right (can't find any information on it)
what year is this tractor?

engine check list:
1.does it have good spark
2.is it getting fuel
3.is it getting air
4.does it have good compression

electrical check:
check the run circuit starting at ignition sw.

 

[Dario_7]

are you sure you have the model number right (can't find any information on it)
what year is this tractor?

engine check list:
1.does it have good spark
2.is it getting fuel
3.is it getting air
4.does it have good compression

electrical check:
check the run circuit starting at ignition sw.

How do I check if it is getting good compression?

 

[SeniorCitizen]

How do I check if it is getting good compression?

You won't be able to easily hold your thumb on the spark plug hole while cranking.

 

[lugnut1]

How do I check if it is getting good compression?

I use a compression gauge
spin engine over till compression gauge reading peaks out (needle quits climbing)