I recently acquired an 25 year old, 30 HP, 2 stroke Johnson outboard tiller. It was hardly used by the previous owner and it sat in a shed for years. I had it tuned up, new plugs, wiring, carb kit, etc. The compression is 145 in both cylinders. My problem is when I run it I have to have the primer knob partly out - showing some red. If I push the primer all the way in once it is warmed up, the motor loses power and RPM`s. It appears to me to be running to rich. The boat shop said they had adjusted the carburetor and idle. I`m several hours away from the shop and didn`t want to drag it back there. I`m not a mechanic but if someone can help me try to make some adjustment, that would be great. Otherwise I will haul it back to the service shop.
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