SANY SY155U, Operation And Maintenance Manual, Page: 80 / 192

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MACHINE OPERATION
SY155U Excavator OMM
• Air Ride Seat Adjustment – Pull the air ride seat
adjustment lever (9) up to raise the seat. Press the
lever down to lower the seat. This will adjust the proper
air ride for the weight of the operator. The height
adjustment setting is indicated in the adjustment
window (8).
NOTE: The battery must be connected and the key switch
must be in the ON position to raise the seat up.
The seat can be lowered with the key switch in the
OFF position.
• Lumbar Adjustment
0003686
Figure 4-18
NOTE: The lumbar adjustment knob is on the left rear side
of the backrest.
Turn the lumbar adjustment knob (1) clockwise to
increase lumbar support, and counterclockwise to
decrease it.
Seat Belt
WARNING
• Inspect the seat belt. Replace the seat belt
immediately if the webbing is frayed or cut, if the
buckle is damaged or malfunctions, or if the
mounting hardware is loose. Replace according
to seat belt manufacturer’s instructions.
• Always keep the seat belt fastened during
machine operation. Never twist the seat belt
when fastening it.
Failure to follow these warnings could result in
death or serious injury.
0003636
Figure 4-19
Buckle the Seat Belt
Hold the latch plate (2) and pull upward to lengthen the
belt. Insert the latch plate into the buckle (1) until it locks.
Pull on the loose belt from the latch plate to tighten.
WARNING
Keep belt slack to no more than 1 in. (25 mm). Belt
slack beyond this amount could significantly
reduce your protection in an accident. Failure to
follow this warning could result in death or
serious injury.
Unbuckle the Seat Belt
To unbuckle the seat belt, press the red button (3) on the
buckle to release the latch plate.
WARNING
Contact a SANY dealer if the seat belt fails any of
these checks or fails to fasten or release. Failure
to follow this warning could result in death or
serious injury.
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