Operation
W9272-8135-1
91
05/2020
Seat height adjustment for mechanical suspension seat (knee height)
The seat height can be adjusted to three stop positions. To adjust the seat height, slowly raise the seat until it
automatically engages in the next stop. When the seat is raised over the highest stop, it will be lowered automat-
ically to the lowest position again.
To raise: Raise the seat to the desired position and engage it.
To lower: Raise the seat to the highest position, lower it fully and engage it.
Spring adjustment for mechanical suspension seat (operator’s weight)
The seat can be set to the weight of the operator with the rotary knob (figure above, position 4).
Turning the grip clockwise increases spring tension (heavier operator), turning the grip anticlockwise reduces
spring tension (lighter operator).
Adjust the seat so that a comfortable cushioning is achieved.
Seat height adjustment (knee height and operator’s weight) for air suspension seat
To adjust the height and spring (operator’s weight) of the air suspension seat, use the switch (4). This switch works
for both the adjustments.
The seat height is adjustable step-less.
Take the following procedure to achieve a comfortable cushioning effect.
Raising the seat for a heavier operator:
Turn on the key and pull up the switch (4).
While holding down the switch (4), the seat keeps moving up to its highest position.
Lowering the seat for a lighter operator:
Pull down the switch (4).
While holding down the switch (4), the seat keeps moving down to its lowest position.
* The seat can be moved down even if the key is off.
Adjust the seat height in relation to its horizontal position so that the foot controls can be operated
safely.
Make sure that the seat adjuster is engaged.
Do not hold up the switch (4) longer than 30 seconds. The air suspension may get damaged.
The operator is supposed to weigh less than 150 kg.
STOP
Summary of Contents for U50-5
Page 1: ...GB COMPACT EXCAVATOR MODEL U50 5 OPERATING INSTRUCTIONS W9272 8135 1 Original 05 2020...
Page 38: ...36 W9272 8135 1 05 2020 Safety rules...
Page 54: ...52 W9272 8135 1 05 2020 Description of the machine...
Page 74: ...72 W9272 8135 1 05 2020 Assembly and functions...
Page 164: ...162 W9272 8135 1 05 2020 Operation...
Page 222: ...220 W9272 8135 1 05 2020 Maintenance...
Page 224: ...222 W9272 8135 1 05 2020 Safety inspection...
Page 234: ...232 W9272 8135 1 05 2020 Software information...
Page 235: ...Software information W9272 8135 1 233 05 2020...
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