Shindaiwa 488EMC, Owner'S/Operator'S Manual

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3
Either of the following reactions
could cause you to lose control of
your saw while cutting, possibly
resulting in serious injury!
1. Kickback can occur whenever the
guide bar nose or tip contact an
object while the saw is running.
Tip contact may cause the guide
bar to kick upward and back
toward the operator, with a
lightning-fast reaction!
2. Pinching the saw along the top of
the guide bar may push the guide
bar rapidly back toward the
operator! Pinching can occur
whenever wood closes in around
the moving chain!
Do not rely exclusively on the safety
devices incorporated with your saw.
As a chain saw user, observing the
following steps will also help you to
avoid accident or injury on the job:
■
Sudden surprise can contribute
to accidents! With a basic under-
standing of kickback, you can
reduce or eliminate the element of
surprise.
■
Clear obstructions from the work
area before cutting. Remove any
log, branch, or other obstruction
that might contact the guide bar
tip during cutting operations.
Kickback Safety Precautions
■
Grip the saw firmly with your
right hand on the rear handle
and your left hand on the front
handle, thumbs and fingers
encircling the handles, whenever
the saw is running. Don't let go:
A firm grip will help you to
reduce kickback while maintain-
ing control of the saw.
■
Accelerate the saw before the
chain contacts the work area,
and always maintain high engine
speeds throughout the cut.
■
Do not overreach or attempt to
cut above shoulder height.
■
Follow the manufacturer's
instructions for sharpening and
maintenance of the saw chain.
■
Use only the replacement bar
and chain combinations specified
by the manufacturer.
■
Never stand directly over the saw
while cutting!
■
Use low-kickback chain, chain
brakes, or special guide bars to
reduce the risk of kickback. Low
kickback chain is chain that has
met the kickback performance
requirements of ANSI B175.1-
2000 (American National Stan-
dard for Power Tools-Gasoline
Powered Chain Saws-Safety
requirements) when tested on the
representative sample of chain
saws below 3.8 c.i.d. specified in
ANSI B175.1-2000.
Kickback Safety
This saw is equipped with the follow-
ing safety equipment:
1. Inertia chain brake.
2. Low kick chain.
䡵
Activating the chain brake tight-
ens a brake band around the
chain drive mechanism, stopping
all chain rotation. When sudden
kickback occurs, the chain break
is automatically actuated and the
chain stops instantly. Also, the
chain break can be activated
manually.
䡵
Low-kick chain can significantly
reduce the rotational force of
kickback.
䡵
Some bars are manufactured with
a reduced-radius (smaller) nose.
This special guide bar can reduce
kickback by placing fewer cutters
in the kickback zone.
WARNING!
To reduce the risk of kick-
back, all of the above de-
vices must be properly in-
stalled and in good repair! Use of
other than ANSI B175.1- 2000 com-
binations may result in reduced kick-
back protection!
WARNING!
Brake engagement and op-
eration depend upon proper
adjustment! For proper chain
brake testing and adjustment proce-
dures, see page 12.
WARNING!
WARNING!
WARNING!
Kickback can
happen
lightning-fast!
22
Symptom
Poor
acceleration.
Engine stops
abruptly.
Engine difficult
to stop or will
not stop.
Chain rotates
at idle speed.
Excessive
vibration
Possible Cause
Clogged air filter.
Clogged fuel filter.
Chain brake engaged.
Carburetor mixture too
rich or too lean.
Idle speed set too low.
Switch turned off.
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Shorted spark plug or
loose terminal.
Ignition coil faulty.
Piston seizure.
Ground (ignition switch)
wire is disconnected, or
switch is defective.
Overheating due to
incorrect spark plug.
Overheated engine.
Engine idle to fast.
Broken clutch spring or
shoe.
Worn or damaged
sprocket, chain, or bar.
Bent crankshaft
Remedy
Clean the air cleaner element.
Replace the fuel filter.
Inspect and/or test brake.
Return to dealer as required.
Consult with an authorized
servicing dealer.
Adjust: 2,600-3,000 rpm (min -1 ).
Set the switch to (“ON”) and
restart.
Refuel.
Clean or replace filter as
required.
Drain; replace with clean fuel.
Clean or replace spark plug.
Tighten the terminal.
Replace the ignition unit.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Correct plug: NGK BMR7A.
Idle engine until cool.
Set idle: 2,600-3,000 rpm (min -1 ).
Replace spring/shoes as
required.
Inspect and replace chain
components as required.
Consult with an authorized
servicing dealer.
ADDITIONAL PROBLEMS
Troubleshooting