John Deere 28-inch UT10921 Chainsaw User Manual


 
6 English
WARNING
KICKBACK WARNING
KICKBACK occurs when the moving chain contacts an
object at the upper portion of the tip of the guide bar or
when the wood closes in and pinches the saw chain in
the cut. Contact at the upper portion of the tip of the
guide bar can cause the chain to dig into the object and
stop the chain for an instant. The result is a lightning
fast, reverse reaction which kicks the guide bar up and
back toward the operator. If the saw chain is pinched
along the top of the guide bar, the guide bar can be
driven rapidly back toward the operator. Either of these
reactions can cause loss of saw control which can result
in serious injury.
Do not rely exclusively upon the safety devices built into
your saw. As a chain saw user, you should take several
steps to keep your cutting jobs free from accident or
injury.
With a basic understanding of kickback, you can reduce or
eliminate the element of surprise. Sudden surprise contrib-
utes to accidents.
Keep a good firm grip on the saw with both hands when the
engine is running. Place your right hand on the rear handle
and the left hand on the front handle with your thumbs and
fingers encircling the chain saw handles. A firm grip together
with a stiff left arm will help you reduce kickback and maintain
control of the saw.
Make sure that the area in which you are cutting is free from
obstructions. Do not let the nose of the guide bar contact a log,
branch, fence, or any other obstruction that could be hit while
you are operating the saw.
Keep SAFE-T-TIP® Anti-Kickback Nose Guard properly
mounted on the guide bar to prevent kickback.
Always cut with the engine running at full speed. Fully
squeeze the throttle trigger and maintain a steady cutting
speed.
Do not overreach or cut above chest height.
Follow the sharpening and maintenance instructions for the
saw chain.
Use only the replacement guide bars and low kickback chains
specified for your saw.
Do not adapt your powerhead to a bow guide or use it to power
any attachments or devices not listed for your saw.
Precautions Against Kickback
Kickback is a dangerous reaction that can lead to serious
injury. Do not rely only on the safety devices provided with
your saw. As a chain saw user, you must take special safety
precautions to help keep your cutting jobs free from acci-
dent or injury.
SAFETY
ATTENTION
Your Chain Saw has been fully factory tested. It is normal
to find some slight oil residue on the saw.
A
B
Basic Safety Precautions
Push and Pull
The reaction force is always opposite to the direction the chain
is moving when wood contact is made. Thus, the operator must
be ready to control the PULL (A) when cutting on the bottom
edge of the bar, and PUSH (B) when cutting along the top edge.
Always hold the chain saw with both hands when the engine
is running. Use a firm grip with thumbs and fingers encircling
the chain saw handles.
Never operate a chain saw when you are fatigued.
Keep all parts of your body away from the saw chain when the
engine is running.
Always carry the chain saw with the engine stopped and chain
brake engaged, the guide bar and saw chain to the rear, and
the muffler away from your body. When transporting your
chain saw, use the appropriate guide bar scabbard.
Apply chain brake prior to any repositioning of the operator in
the cutting area.
Always use caution when handling fuel. Move the chain saw
at least 10 feet (3m) from the fueling point before starting the
engine.
Do not operate a chain saw with one hand! Serious injury to
the operator, helpers, bystanders, or any combination of these
persons may result from one-handed operation. A chain saw
is intended for two-handed use.
Never let anyone use your chain saw who has not received
adequate instructions in its proper use. This applies to rentals
as well as privately owned saws. Keep the handles dry, clean,
and free of oil or fuel mixture.
Before you start the engine, make sure the saw chain is not
contacting any object.
Shut off the engine before setting down the saw. Do not leave
the engine running unattended.
As an additional safety precaution, apply the chain brake prior
to setting down the saw.
Operate the chain saw only in well ventilated areas.