Yale MSW020-E Operating Manual page 54

Operating Procedures
3. Travel with the reach mechanism retracted and the lift
mechanism raised only enough to clear the ground, base
arms, or obstacles. When the mast is in a raised position,
the stability of the lift truck is reduced. This is also true
when the lift truck is not carrying a load.
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4. Travel with the load trailing and look in the direction of
travel. If the lift truck must travel in a direction where visibil-
ity is obstructed, a lookout helper may be required.
5. When traveling up or down a grade with a loaded lift
truck, keep the load downgrade to maintain control.