1978 GS1000 Daily

[Big T]

Two suggestions

Only move the needle clip one notch at a time

Most people end up around 122.5 Mikuni main jet, so, you could be rich

Did you tune your air screws to high idle?

[Jacob4ta]

Two suggestions

Only move the needle clip one notch at a time

Most people end up around 122.5 Mikuni main jet, so, you could be rich

Did you tune your air screws to high idle?

I have not tuned them to “high idle”. I’ll have to look around the forum for what that is. I set them to what most folks have recommended for fuel and air screws settings as starting points. I’ve done every o-ring and gasket, valve clearances, timing and new spark plugs. Bike runs well compared to what I started with, now I just need to handle this poor fuel economy. I’m sure at my elevation I could go down a few sizes for main jets. It will ride between 2700-4200ft elevation so maybe I’ll order 122.5 mains and give those a shot.

[Big T]

I'm at 137 feet and I can run to 6000 feet at Timberline Lodge, no problem

High idle is just that. Point a fan at the motor and tweak the air screws 1/4 turn each way to see if the idle speed increases. You can go farther than 1/4 turn
Even if the idle barely changes, the motor will sound smoother.