Solved!
Engine would run with fuel mixture ratio motor removed from Lp inlet at carb. And plugged with hand.
Cut harness open and found broken wire (red/blue stripe) at main harness clamp above cyl. # 3.
Lift had 14422 hrs on it so the wiring harness had some wear.
I spliced wire back and bingo! Prob. Solved.
Code went away and cust. Happy so I'm happy.
Hope this helps someone else
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