Looking for the jetting for a 1976 MC 5 250. 36 or 38mm?
Purchased Mikuni VM 36 carb for my 77 Penton 250GS6 from OEM cycle. Installed it with the set-up as purchased. I live in Maryland -- essentially at sea level. Did a shake-down run with the new carb install in April. Couldn't be happier with the carb and bike's performance. Bought a few airbox rubber boots from Al and trimmed down the carb air intake. Zero problems with this setup. Had essentially the same setup for my 81 KTM 250GS enduro -- again, no problems.
Hope this helps.
Mikuni
Round Slide VM Series Carburetor - 36mm
Sold as: Each
Bore Size : 36mm
Main Jet : 310
Pilot Jet : 35
Needle Jet : Q-5
Throttle Valve : 2.5
Jet Needle : 6FJ6
Air Jet : 2.0
Needle Valve : 3.3 (VM34/39)