The currently recommended plugs are QL77JC4 or QL82C, gapped at 0.030"
It is usual for some unburnt oil to drip from a 2 stroke This will be more if the engine is only used at low speeds.
The recommended fuel mix is 50:1 but you could safely reduce the amount of oil for your low speed use if this is a problem. Dont go beyond 100:1 and either fog the engine before prolonged non-use ( winter lay up) or run 50:1 for the final outing.
If / when you can give it a good thrash at high speed or you will get excessive carbon deposits in the engine
Make sure the carb low speed needle is correctly adjusted
(Carburetor Adjustment - Single S/S Adjustable Needle Valve)
(J. Reeves)
Initial setting is: Slow speed = seat gently, then open 1-1/2 turns.
Start engine and set the rpms to where it just stays running. In segments of 1/8 turns, start to turn the S/S needle valve in. Wait a few seconds for the engine to respond. As you turn the valve in, the rpms will increase. Lower the rpms again to where the engine will just stay running.
Eventually you'll hit the point where the engine wants to die out or it will spit back (sounds like a mild backfire). At that point, back out the valve 1/4 turn. Within that 1/4 turn, you'll find the smoothest slow speed setting.
A electric outboard would probably be more suitable for your use ........ One of the Torqeedo models if they are available in your part of the world.
