I finally got the 446 started up this weekend after about 4 years. Last time it had run, it was missing badly and surging. I put new plugs in, fresh gas, seafoam and got it started. It ran rough initially and after a few treatments of carburetor cleaner it began to run so well that I drove it around for about 30 minutes. Parked it outside and it sat for the afternoon. Went back to start it and put it away a few hours later and nothing. Not getting spark at the plugs. Next morning tried again and got spark during one crank. Put the plug back in and nothing.
So looking for ideas on suspects for this intermitent spark. Thanks in advance.
Also looking for any input on how this seat switch should be wired. It was like this (see picture) when I got it.