Basics to check:
1) Spark plug - brown or dark brown - OK
- aluminum or silver - piston/cylinder scored
a) is it carbon or fuel fouled
b) is there spark
2) Compression - 125 to 150 psi
3) Muffler remove for inspection
a) exhaust screen clean or plugged
b) inspect cylinder wall/piston as the flywheel is slowly rotated
Depending on type of saw, you may see a small amount of fuel/mist while it is running, but I do not think you should see it as you pull the rope. If you make it thru the above checks, you should have a good idea what is going on with it.
I’m happy to assist further over the phone at
https://www.6ya.com/expert/rolandw_c013176d62ee17ae
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