Help with 661

[joshcuts21]

Hey guys, question about my 661. If I let it sit over night then try to start it sometimes starts for a few seconds then dies but if I try again it won’t start. Has no spark. I’ve changed wiring harness, ignition coil, spark plug and still no sparks. Any ideas on what to try next? Thanks!

 

[Bob Hedgecutter]

Best Bubba guess ( I do not do a lot of mtronic stuff), bad connections in the electrical system- especially the solenoid on the carb and the white connector above it.
Could be a faulty solenoid- but then it would be a fuel related issue.

I know some of the mtronic saws if the coil does not "see" a solenoid, it will not fire at the plug.

Clean all connections, wiggle wires, ensure connectivity and maybe test wires for an open circuit and continuity.