Standen ZENO 21, Manual

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When left free standing i.e. not attached to the tractor, the machine
must be on level ground.
The operator must not leave the tractor seat until the machine has been
lowered to the ground, the tractor engine switched off, the handbrake
applied and the ignition key removed.
Never reverse or turn unless the machine is in the raised position.
All guards, covers, warning transfers and safety devices must be
correctly fitted and operable at all times.
Inspect the machine on a regular basis and replace damaged or worn
parts as necessary.
Never operate the machine in a state of disrepair.
Only transport the machine at a speed suitable to the prevailing
conditions. Be aware of the weight and overall length of the machine at
all times.
When in transport keep the hopper empty. Always fill the hopper in the
field. Transporting with a full hopper causes strain on both planter and
tractor and will pack the potatoes in the hopper causing ‘bridging’ when
planting commences.
Always ensure road lights are clean and in good working order.
Always lock the raised hopper with the stays before working
underneath. Always unlock the hopper again before lowering.
Always use mechanical or additional help when lifting heavy parts.
Regularly check hydraulic hoses for chafing or damage and replace as
necessary.
Care must be taken when carrying out any work on the hydraulic
system. Even when stopped and disconnected from the tractor, residual
pressure will exist within the hydraulic system. Therefore, before
commencing any work on the hydraulics ensure that the system is free
of residual pressure.
Safety is the responsibility of the persons working with this
machine. Think "safety" at all times. Read and remember the
contents of this handbook.
SAFETY PRECAUTIONS 1.4