What type of engine oil should I use?
Please refer to the following chart for your climate conditions that may require different weight oil.
The first 5 hours of run time are the break-in period for the unit. During the break in period stay at or below 50% of the running watt rating and vary the load occasionally to allow stator windings to heat and cool. Adjusting the load will also cause engine speed to vary and help seat piston rings. After the 5 hour break-in period, change the oil.
Add small amounts until the oil appears at the bottom of the filler plug threaded hole in the crankcase. Too little oil will activate the low oil sensor and not allow the engine to start. Too much oil will cause the engine breather system to purge excess oil into the air cleaner box near the carburetor and eventually obstruct air flow to the engine. This will flood the engine with too much fuel and foul the spark plug. Your engine will not start when this happens.