Thanks everyone, purchased a new spring from local small engine repair which sells Honda and others.
Removed the old and compared the two and using a small weight and measuring the stretch seems to be identical.
With new spring all runs but with the same problem.
StarTechs #5 post mentioned a static governor set up so Googled and thanks to a 1 min YouTube tried it and it worked.
Started on the first pull and ran well and slowly reduced the choke then set up the governor adjustment to 60Hz ish
and started to apply different loads up to 2500 watts and all worked within limits.
Thanks for everyone's help.
Best regards,
Dave
Removed the old and compared the two and using a small weight and measuring the stretch seems to be identical.
With new spring all runs but with the same problem.
StarTechs #5 post mentioned a static governor set up so Googled and thanks to a 1 min YouTube tried it and it worked.
Started on the first pull and ran well and slowly reduced the choke then set up the governor adjustment to 60Hz ish
and started to apply different loads up to 2500 watts and all worked within limits.
Thanks for everyone's help.
Best regards,
Dave