Reply To: Johnson tn-28 power issues

[gjonz]

There are two carbs on that motor. One is the big wheel on the recoil that adjusts the high speed. There is also a slow speed cab under the front of the power head by the tiller mount. It looks like a little L shaped bar. It should be between 3/4 and 1 1/2 open from gently seated. The high speed should be around #5 on the dial. (3/4 open from seated)

Set the high speed first for max rpm’s. Then the low speed.

Otherwise sounds like both cylinders are firing.

However it also could be low compression which is more involved.

Greg