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Champion CJ7Y or NKG BPM7A or Megafire SE-Y7C or Bosh WS7F
.025
yes
Champion RCJ7Y
Take out the three screws on the plastic cover on top. It's the black thing on top. When you have it off you will see the plug. Take off the boot and the plug screws out.
The Jenn Feng 9295-310502 spark plug is typically used in chain saws. The champion spark plug equivalent is a RZ7C.
mine takes a Champion RJ19LM. now if I could find out the proper gap ...
one thats made for a 135cc chain saw
Check for plugged exhaust ports, if the compression can't get out you won"t be able to spin it oner without removing the plug.
Poulan has a diaphragm that goes bad in the carb. It's not expensive to fix it yourself if you do things like that. Take it in and it's $50.00. Plug foul out often too and simulate a fuel problem. Good luck!
If you mean that the wire came out of the boot, then pull the boot off of the spark plug and use a spark plug socket to remove the spark plug.
Not definite, but possibly wrong timing when reinstalling cams and chain and heads, etc. other option is wrong spark plug wiring. spark plug wires on the wrong plug!