GS750 - So Nearly There!

[bod]

Got my 77 GS750 back on the road legally today! God it felt good ,to feel some bits of heavy metal whirring under me again
The new Avon Roadriders stick like **** to a blanket on the dry, warm, spring roads, and 60mph feels like fun again!

But, despite the carbs being cleaned, they still aint right!

Spark plug 1 is getting soaked, and floods through breather on tickover.

Starts nicely, but won't tickover when hot.

When hot, a sod to launch from a standstill, but then drives perfectly through the lower revs, struggles through the midrange, then pulls nicely to the red line. Pulling through the midrange in top gear is a real chore?

Bog standard bike & air box - could someone please tell me the standard carb settings, as my Haynes manual only mentions the side carb screws & not the one's underneath?

Apart from the carb issue - this GS runs & handles like a dream, and I can't see my other GS (a German thing) getting used much before Autumn. Dave.

[Nessism]

Bottom screw is the "pilot fuel screw", set to 3/4 - 7/8 of one turn. Top screw is "pilot air screw", set to 1.5 turns and then tune to achieve the best idle.

Based on what you are saying it sounds like the floats are not set properly and/or the float needles are leaking. I recommend making yourself a fuel level gauge and then measuring instead of guessing.

Hope you figure it out and good luck.