I thought I would post an update.
Thanks to some help from Stillplayswithtractors I got it solved.
Buried in behind the instrument panel (lower left) there are 3 relays. One of them is for the fuel shut off and had gone bad.
The relay must have been working intermittently and then quit...
My WM55 started with intermittent starting problems and now won't start.
I need a wiring diagram to troubleshoot further.
I've traced it to the power to the fuel shut off solenoid.
If I wire the solenoid directly to the battery it operates properly and starts reliably. It draws < 1 amp which...
My Workmaster 55 became difficult to start about 3 weeks ago and I am trying to troubleshoot it.
I need a copy of the wiring diagram to troubleshoot it further to figure out the specific component that is the problem.
I've narrowed it down to the fuel shut off solenoid does not reliably open...