SkyTrak 6036 Tier II Operation Manual - Manual (Page 45)

Operation
39 Model 6036
Frame Level Indicator
The indicator (4) is mounted on the top inside of the Operator's Protective
Structure (cab). This is a bubble type indicator which allows the operator to
tell if the vehicle has been positioned in a level condition. Always frame
sway the vehicle either right or left until the indicator reads zero degrees
(0°). If zero cannot be achieved, then reposition the vehicle until it is level
before placing the load.
NOTE: Maximum frame sway is 10° in either direction.
OS0232
4