In Reply to: 641 wont start (2020) posted by Mike in Michigan on July 11, 2020 at 08:21:21:
I'm going to throw this in here, just in case.
I recently fought a strange set of symptoms on my 860. Drove it into the machines shed, could not start it to drive it out! Intermittent spark for one.
Ended up being the distributor. Measure the point gap on all four lobes. Should essentially be the same. I had wild variations.
Could not feel the slop from the top but once the distributor was in my hands, there was no question.
Slight possibility but easy check.