SOLVED
SOLVED ! ! !
FIRST
I removed the solenoid and blocked the hole with a piece of rubber and a clamp. ( I couldn't find a bolt with the same thread) Still did the same stall and surge routine.
replaced the solenoid.
I called the place that sells the 17.5HP XP 620, Not where I bought it...
I have a Murray Sentinel with a retro fitted Zhongchen XP 620 17.5hp Briggs copy
Ran great first 18 months.
The problem I have is that it starts and runs fine for 20 mins then completely and abruptly cuts out.
I restart it and is it starts surging, (governor doesn't know what to do) and the...