2-51
CONTROLS
ACCESSORIES
Heater valve
Coolant circulates in the heater even when
the heater switch is turned off.
When the heater is no longer needed, stop
coolant circulation as follows.
IMPORTANT: Use the valve (1) either fully
open or fully closed.
Cooling water could leak when the valve
is partly opened.
1. Park the machine on a level surface and
stop the engine.
2. Open the engine hood.
3. Turn the valve (1) clockwise until it stops to
close it.
Filters
Clean the filters immediately after operating
in dusty places.
If the filters are clogged, the air flow is
reduced and a booming sound is heard from
the heater unit.
Refer to “Cleaning the air filters” on page
5-41.