This twenty horse Onan has been trouble for years. It's always run rich and it has surging fits some times. Some body's been in the carb before me so I ordered a new carb. and set of gaskits, Pulled the intake manifold out and found a vac. leak in that. Kind of a job to split the manifold and clean out the old sealer.
Then I adjusted the valves, now I got to wait a couple days for my parts to come.
Then I adjusted the valves, now I got to wait a couple days for my parts to come.