Stihl RMA 339 C User Manual

0478 131 8327 B - EN
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– if the measured values are achieved at
one or more places or are outside the
permissible limits.
13.7 Removing and installing the
mowing blade
1 Removing:
● Use a suitable wooden block (1) to hold
mowing blade (2) in place.
● Unscrew blade fastening screw (3) and
remove mowing blade (2).
2 Installing:
● Clean the blade contact surface and
blade bushing.
● Install mowing blade (2) with the curved
wings pointing upwards. Locating
lugs (4) must be located in recesses (5)
of the mowing blade.
● Use a suitable wooden block (1) to hold
mowing blade (2) in place.
● Apply Loctite 243 to the thread of blade
fastening screw (3).
● Tighten blade fastening screw (3).
Tightening torque:
10 - 15 Nm
13.8 Sharpening the mowing blade
If you do not have the necessary expertise
or auxiliary equipment, you should have
the blade sharpened by a specialist dealer
(STIHL recommends STIHL specialist
dealers).
Operation of the machine is impaired in the
case of an incorrectly sharpened mowing
blade (incorrect sharpening angle,
imbalance, etc.), the cutting performance
(battery running time) may be reduced and
the noise emissions increased.
Sharpening instructions
● Remove the mowing blade. (Ö 13.7)
● Cool the mowing blade during
sharpening, e.g. with water.
The blade must not be allowed to
display blue colouring, as this would
reduce its cutting quality.
● Sharpen blades evenly to prevent
vibration due to imbalance.
● Observe a sharpening angle of 30°.
● Observe the wear limits. (Ö 13.6)
13.9 Storage (winter break)
Store the machine in a dry and locked
place that is generally free of dust. Make
sure that it is kept out of the reach of
children.
In order to prevent damage to the
blade fastening screw, use a
suitable socket (22 mm) for
loosening and tightening.
Risk of injury!
The mowing blade must only be
installed as shown, in particular
tabs (6) must point downwards.
Always replace blade fastening
screw (3) when replacing the
mowing blade. The specified torque
when tightening the blade fastening
screw must be strictly observed, as
the secure attachment of the cutting
tool depends on this.

Stihl RMA 339 C Specifications

General

Type	Walk behind lawn mower
Cutting width	370 mm
Grass catcher	Yes
Product color	Black, Green, Orange
Uncertainty K	0.8 m/s²
Cutting system	Rotary blades
Number of wheels	4 wheel(s)
Rotational speed	3350 RPM
Maximum lawn area	- m²
Mulching function	-
Sound power level	90 dB
Handle(s) features	Foldable
Vibration emission	1.6 m/s²
Rear wheels diameter	180 mm
Sound pressure level	89.4 dB
Front wheels diameter	150 mm
Maximum cutting height	70 mm
Minimum cutting height	30 mm
Grass collecting volume	40 L
Suitable for slope up to	25 °
Power source	Battery
Battery voltage	36 V
Power consumption (typical)	900 W

Weight and Dimensions

Width	420 mm
Height	1070 mm
Weight	16000 g