DS-521
2.3.1.1 Technical information
DS-521
Unit
Value
Length
mm
1730
Width (including the side screen)
mm
764
Height
mm
1180
Weight
kg
59
Maximum cutting width
cm
58,5
Safe climbing ability
∠
10°
Cutting disk revolutions
38
min
-1
1990
Maximum blade circumferential velocity
m.s
-1
60,9
Travelling speed
km.h
-1
2,6
Area capacity
39
m
2
.h
-1
1521
Gearbox oil capacity
l (litre)
0,025
Gearbox oil quality
API
GL-4 (GL-5)
SAE
90 (80W-90)
Tab. 3: Technical information for DS-521
2.3.1.2 Engine information
Engine
Unit
Value
Type
-
HONDA GCV-160
Engine displacement
cm
3
160
Bore x stroke
mm
64 x 50
Max. power/at rpm (HP)
40
kW/min
-1
(HP)
3,3/3600 (4,4)
Max. torque/at rpm
41
N.m/min
-1
9,4/2500
Maximum (set) engine rpm
min
-1
3200 ± 100
Fuel consumption
l (litre)
1,1 at 3000min
-1
Maximum engine tilt (long period)
∠
20°
Maximum engine tilt (short period
42
)
∠
30°
Fuel tank volume
43
l (litre)
0,91
Fuel
(unleaded) petrol
ON 91-95
Engine oil filling
l (litre)
0,55
Oil quality
SAE
15W-40
Ignition plug
-
NKG BPR6ES
BRISK LR15YC
Tab. 4: Engine technical information
2.3.2 Description of the machine and its parts
Drum mower DS-521 (
Pict.2
) is built on a steel frame, to which all important parts of the machine are attached. All
controls
(1,2 and 4) are placed on
the handlebars. Handlebars are attached to the frame with a
bolted
connection
(3) and their height is adjustable into 3 positions.
Handles
(12) secure a
firm grip and machine handling during work. On the left side of the handlebars, there is the
wheel drive clutch
lever (2) which controls the movement of
the machine in forward direction. On the right side, there is lever (1) of the disc drive clutch for turning the cutting disk drive on (off). Both control levers
return to their original position when the handlebars are released in a critical situation and disconnect the engine power transfer. The cutting disk is
equipped with an
automatic brake
44
which stops the disk. Engine speed is controlled with an
accelerator lever
(4). The wheel drive is controlled by
38
Actual rpm. of the disc when not cutting, including belt transmission losses.
39
Square meters cut per min./hour will vary, depending on the type of the stand.
40
Measured according to new
Society of Automotive Engineers (SAE) J1349
standard
41
Measured according to new
Society of Automotive Engineers (SAE) J1349
standard
42
Short period – up to 1 minute.
43
Measured according to new
Society of Automotive Engineers (SAE) J1349
standard
44
The automatic break is an active protective feature that supports the machine’s safety.
17