Jonsered CS 2153 EPA I - Manual (Page 37)

MAINTENANCE
English – 37
Heated handles
(CS 2152W, CS 2153W)
On models with the model code W, both the front handle
bar and the rear handle are equipped with electrical
heating coils. These are supplied with electricity from a
generator built into the chain saw.
When the switch is pushed downwards, the heat is
switched on. When the switch is pushed upwards, the
heat is switched off.
Electrical carburetor heating
(CS 2152WH, CS 2153WH)
On models with the designation CARBURETOR
HEATING there is an electrically heated carburetor.
Electrically powered heating prevents ice formation in the
carburetor. A thermostat regulates the heating so that the
carburetor always has the right working temperature.