Originally Posted By: Linctex
Every 6 months for 20 mins
Start, warm up, load to about 2/3 or 3/4 of running capacity (not MAX load)
Run at no load 2-3 mins
shut off fuel...... run until carb is dry.
As above is likely sufficient.
I leave my Yamaha EF2000is for six months of the year for winter storage. I fill the tank, shut the air intake off, shut the fuel off and let it run until it stops to drain the carb. In the spring, I open the air to the fuel tank, turn on the fuel, give it a couple pulls and away she goes.