6B-1. Mounting The Guide Bar And Saw Chain; 6B-2. Tensioning The Saw Chain; 6B-3. Checking The Chain Tension; 6B-4. Retensioning The Saw Chain - Makita EA3500S Manual De Instrucciones

On QuickSet guide bars the chain is tensioned using
a toothed rack in the bar. This simplifies retensioning
of the chain. These models do not have a conventional
chain tensioner. QuickSet guide bars are identified by
this symbol:

6b-1. Mounting the guide bar and saw chain

Use the universal wrench delivered with the chain saw for the
following work.
Put the chain saw on a stable surface and carry out the
following steps for mounting the guide bar and saw chain:
(Fig. 34)
Release the chain brake by pulling the hand guard (1) in
direction of arrow.
Unscrew retaining nuts (2).
Pull off the sprocket guard (3).
(Fig. 35)
Put the guide bar (4) on and push it against the sprocket (5).
(Fig. 36)
Lift the chain (6) over the sprocket (5).
Guide the chain from above about halfway into the groove (7)
on the guide bar.
CAUTION:
Note that the cutting edges along the top of the chain must
point in the direction of the arrow!
(Fig. 37)
Pull the chain (6) around the sprocket nose (8) of the guide
bar in the direction of the arrow.
(Fig. 38)
Replace the sprocket guard (3).
IMPORTANT:
Lift the saw chain over the chain catcher (9).
Tighten the nuts (2) only hand-tight to begin with.
6b-2. Tensioning the saw chain (Fig. 39)
Turn the QuickSet chain tensioner (10) to the right
(clockwise) using the combination tool, until the saw chain
guide elements engage in the guide groove on the bottom
of the guide bar (if necessary, pull the chain into position
slightly).
Raise the tip of the guide bar slightly and turn the chain
tensioner (10) further until the saw chain is flush against the
bottom of the guide bar (see circle).
While still holding up the tip of the guide bar, tighten the
retaining nuts (2) with the universal wrench.
NOTE: If the guide bar has been turned over, turn the chain
tensioner to left (i.e. counter-clockwise) to tighten the chain.
6b-3. Checking the chain tension (Fig. 40)
The tension of the chain is correct if the chain rests against
the bottom side of the guide bar and can still be easily turned
by hand.
While doing so the chain brake must be released.
Check the chain tension frequently - new chains tend to get
longer during use!
When checking the chain tension the engine must be
switched off.
NOTE: It is recommended to use 2-3 chains alternatively.
In order to guarantee uniform wear of the guide bar the bar
should be turned over whenever replacing the chain.
6b-4. Retensioning the saw chain (Fig. 39)
Use the combination tool to loosen the fastening nuts (2)
about one turn. Raise the tip of the guide bar slightly and
turn the QuickSet chain tensioner (10) to the right (clockwise)
until the saw chain is again flush against the bottom of the
guide bar (see circle).
While still holding up the tip of the guide bar, tighten the
retaining nuts (2) with the universal wrench.
6c. Only for models with quick
tensioner on sprocket guard (TLC)
CAUTION:
Before doing any work on the guide bar or chain, always
switch off the engine and pull the plug cap off the
spark plug (see "Replacing the spark plug"). Always wear
protective gloves!
CAUTION:
Start the chain saw only after having assembled it
completely and inspected.

6c-1. Mounting the guide bar and saw chain

Place the saw on a stable surface and perform the following
work steps in order to install the guide bar and saw chain:
(Fig. 41)
Release the chain brake by pulling the hand guard (1) in
direction of arrow.
Fold up the sprocket guard quick tensioner (2) (see also the
illustration on tensioning the saw chain).
Push the sprocket guard quick tensioner in forcefully against
the spring tension and slowly turn counter-clockwise, until
you feel it engage. Keep pushing, and turn as far as possible
counter-clockwise.
Release the sprocket guard quick tensioner again and turn
clockwise to bring it back to its original position. Repeat this
procedure until the sprocket guard (4) is unscrewed.
Remove the sprocket guard (4).
(Fig. 42)
Put the guide bar (5) on and push it against the sprocket (6).
(Fig. 43)
Lift the chain (8) over the sprocket (7).
Guide the chain from above about halfway into the groove (9)
on the guide bar.
CAUTION:
Note that the cutting edges along the top of the chain must
point in the direction of the arrow!
(Fig. 44)
Pull the chain (8) around the sprocket nose (10) of the guide
bar in the direction of the arrow.
(Fig. 45)
Align hole on sprocket guard (4) with the pin (11).
Turn the chain tensioner (3, see "Tightening the saw chain")
to bring the chain tensioner pin (12) into alignment with the
hole in the guide bar.
Push the sprocket guard (4) onto the pin (11).
6c-2. Tightening the saw chain (Fig. 46)
Simultaneously push in hard on the sprocket guard quick
tensioner (2) and turn it clockwise to screw the sprocket
guard on, but do not yet tighten it.
Raise the tip of the guide bar slightly and turn the chain
tensioner (3) clockwise until the saw chain is flush against the
bottom of the guide bar (see circle).
Push the sprocket guard quick tensioner (2) in again and
tighten by turning clockwise.
(Fig. 47)
Release the sprocket guard chain tensioner until it turns
freely, then fold it in between protective ribs (15) as shown in
the illustration.
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