Safety Devices - Stihl RM 3 RT Manuel D'utilisation

2. Front wheel cutting height
adjustment ( 8.6)
Five different cutting heights can be set.
Level 1 = 25 mm
Level 5 = 80 mm
Cutting levels 2 to 4 are standard,
especially when using the machine as a
mulching mower. ( 10.2)
STIHL recommends setting the required
cutting height at the rear wheel first and
then adjusting the cutting height at the
front wheel. The cutting height is set
correctly when the housing is parallel with
the ground.
8.5 Setting the rear wheel cutting
height adjustment
● First pull rear wheel cutting
height adjustment lever (1) towards the
wheel and hold.
● Select the required cutting height
(cutting levels 1 to 5 as shown) and
allow the lever to engage again.
0478 111 9938 A - EN
8.6 Setting the front wheel
cutting height adjustment
Risk of injury!
Do not reach under the front
wheel cutting height adjustment
with the hands or fingers.
Never put your hands or feet
between the housing and ground.
Danger of burns!
When touching the machine at
wheel fork (1), ensure that you
maintain a safe distance from the
engine and from the silencer – parts
of the engine become hot following
prolonged use.
● To adjust the cutting height adjustment,
hold the machine at wheel fork (1) as
shown, press release lever (2) in the
7
direction of the arrow and hold during
the adjustment procedure.
Hold wheel fork (1) upwards with the
hand so that the lawn mower cannot
drop to the lowest cutting level under its
own weight.
● Move adjusting pin (3) to the "Adjusting
cutting height" position (=centre
position).
● Reducing the cutting height:
The cutting level is reduced by pushing
on wheel fork (1).
Increasing the cutting height:
Lift the machine and push down on
swivelling axle (4) of the front wheel
from above using the other hand until
the desired cutting height is reached.
● Checking the cutting height:
Select the cutting height (cutting levels
1 to 5 as shown) so that the cutting level
at the rear wheel is the same as the
cutting level at the front wheel. The
housing must be parallel to the ground.
● Release release lever (2).
● Push adjusting pin (3) further to the left
8 or right as required. (
8.7 Opening and closing the
discharge flap
Always open or close the discharge
flap completely in order to prevent
blockages in the housing.
1 Closing the discharge flap:
● Release the fastening of discharge
flap (1) and close discharge flap (2) –
press in the direction of the housing.
● Tighten the fastening of discharge
flap (1) again.
2 Opening the discharge flap:
● Release the fastening of discharge
flap (1) and open discharge flap (2) –
pull outwards as far as it will go.
● Tighten the fastening of discharge
flap (1) again.

9. Safety devices

The machine is equipped with several
safety devices for safe operation and for
the prevention of improper use.
Risk of injury!
If a safety device is found to be
defective, the machine must not be
operated. Consult a specialist
dealer; STIHL recommends STIHL
specialist dealers.
8.3)
9
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