Stihl 038 - Intake Air Preheating (Special Accessory)

Intake Air Preheating
(Special Accessory)
Plug fitted in shroud
The intake air preheating kit prevents the air filter and
carburetor icing up at low outside temperatures as well as
the entry of snow into the fan housing.
Carry out the conversion by removing the standard car-
buretor box cover, taking the plug (1) out of the shroud and
fitting it in the cutout in the crankcase (to the right of the
flywheel).
When the special carburetor box cover with seal (2) is
fitted, the intake air is preheating by the cylinder.
The cover plate (3) is fitted in the fan housing to ensure
that no snow can be drawn in through the intake slots.
The standard guard in the sprocket cover can also be ex-
changed for the smooth contour guard included in the kit
to ensure optimum chip discharge even in wet conditions.
Top: Plug fitted in crankcase
Bottom: Special carburetor box cover with seal;
cover plate fitted in fan housing
Important: To avoid the risk of engine overheating the
conversion to intake air preheating may only be carried
out under the following conditions:
Carburetor box
cover with seal: below +10°C (+50°F)
Cover plate in
fan housing: below —10°C (+14°F)
Detailled instructions for the conversion to intake air pre-
heating are supplied with each kit.