Thanks guys
Max, this one doesn't seem to have a removable emulsion tube - it is a pressed in design. I put the choke on to 3/4 yesterday and it made no difference to surging under load at 3600rpm. 3000rpm it was fine.
Also changed the fuel tap and new plugs
All irrelevant now as its stuffed. I pulled the generator apart and was shocked 2/3 mounting bolts were barely finger tight. everything checked out internally, so it went back together. I was tightening up the 3 mounting bolts when I heard a slight creak (barely more than finger tight) then the next one (admittedly tighter but I was not swinging off the ratchet) went bang and cracked the entire mounting. Turns out the 2 that were finger tight both cracked when tightened. so there obviously was micro fracturing.
it is basically pot metal - absolute chicken **** stuff.
I thought if I am going to bother welding or JB welding the cracks I am going to make sure it works. So using some spare nuts and wire, I utilised the head bolts to torque down the mounting screws. Back together and it did the same thing. Voltage drops, cuts in and out. No surging though at 3000rpm
Will grab parts off it and toss it.
