Saw Chain Tension Adjustment - SPARKY TV 3540 Instrucciones De Uso

mixture and filling the oil tank with lubricating oil.
WARNING: Do not start saw engine
until unit is properly prepared!
Read the entire user manual before attempting
to operate your unit. Pay particular attention to all
safety precautions.
Your user manual is both a reference guide and
handbook provided to furnish you with general in-
formation to assemble, operate and maintain your
chain saw.
GUIDE BAR / SAW CHAIN INSTALLATION
WARNING: Always wear protective
gloves when handling chain.
CAUTION: To ensure that the bar and
chain receive oil; use only the original style
bar with the oil passage hole (A) as illustrated
(Fig. 3A).
Guide bar installation
1. Make sure the chain brake lever is pulled back
into the disengaged position (Fig.3B).
2. Remove the bar retaining nuts (B). Remove
the chain cover (C) pulling it out forcefully
(Fig. 3C).
NOTE: Discard the two plastic washers. They are
only used for shipping the chain saw.
3. Using a screwdriver, run the adjustment
screw (D) counter clockwise until the tang
(E) (projecting prong) is to the end of its travel
(Fig. 3D).
4. Place the slotted end of the guide bar over
the 2 bar bolts (F). Slide the guide bar behind
the clutch drum (G) until the guide bar stops
(Fig. 3E).
To install saw chain:
WARNING: Always wear protective
gloves when handling chain.
1. Spread the chain out in a loop with cutting
edges (A) pointing clockwise around loop
(Fig. 4A).
2. Slip the chain around the sprocket (B) behind
the clutch (C). Make sure the links fit between
the sprocket teeth (Fig. 4B).
Original instructions
3. Guide the drive links into the groove (D) and
around the end of the bar (Fig. 4B).
NOTE: The saw chain may droop slightly on the
lower part of bar. This is normal.
4. Pull guide bar forward until chain is snug. En-
sure all drive links are in the bar groove.
5. Install the clutch cover making sure the tang
is positioned in the lower hole in the guide bar.
Make sure the chain does not slip off of the
bar. Install the bar retaining nuts hand tight
and follow tension adjustment instructions in
Section SAW CHAIN TENSION ADJUST-
MENT.
NOTE: The guide bar retaining nuts are installed
only hand tight at this point because saw chain ad-
justment is required. Follow instructions in Section

SAW CHAIN TENSION ADJUSTMENT.

SAW CHAIN TENSION ADJUSTMENT
Proper tension of saw chain is extremely impor-
tant and must be checked before starting, as well
as during any cutting operation.
Taking the time to make needed adjustments to
the saw chain will result in improved cutting per-
formance and prolonged chain life.
WARNING: Always wear heavy duty
gloves when handling saw chain or making saw
chain adjustments.
To adjust saw chain:
1. Hold the nose of guide bar up and turn the
adjustment screw (A) clockwise to increase
chain tension. Turning the screw counter
clockwise will decrease the amount of tension
on chain. Ensure the chain fits snugly all the
way around the guide bar (Fig. 5).
2. After making adjustment, and while still hold-
ing nose of bar in the uppermost position,
tighten the bar retaining nuts securely. The
chain is properly tensioned when it has a
snug fit all around and can be pulled around
by gloved hand.
NOTE: If the chain is difficult to rotate on guide bar
or if it binds, too much tension has been applied.
This requires minor adjustment as follows:
A. Loosen the bar retaining nuts so they are
finger tight. Decrease the tension by turning
the bar adjustment screw counter clockwise
slowly. Move the chain back and forth on
bar. Continue to adjust until the chain starts
to rotate freely, but fits snugly. Increase the
tension by turning the bar adjustment screw
7
EN