This video is for the CDB30 grass trimmer, however it still applies in principle to other 2-stroke engines.
- Drain remaining fuel out of tank (you don't want it forming residues over winter, due to condensation).
- Run the machine to use up all the fuel inside your carburetor.
- Press priming bulb to inject remaining fuel. Try to start up. If it doesn't start up, then your preparation for winter is complete.
Store in a dry place.