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
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