16 ENGLISH
Carrying tool
Before carrying the tool, always apply the chain brake
and remove the battery cartridges from the tool. Then
attach the guide bar cover. Also cover the battery car-
tridge with the battery cover.
Fig.23: 1. Guide bar cover 2. Battery cover
MAINTENANCE
CAUTION: Always be sure that the tool is
before attempting to perform inspection or
maintenance.
CAUTION: Always wear gloves when perform-
ing any inspection or maintenance.
NOTICE: Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY,
be performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
Sharpening the saw chain
Sharpen the saw chain when:
• Mealy sawdust is produced when damp wood is
cut;
when heavy pressure is applied;
• The cutting edge is obviously damaged;
• The saw pulls to the left or right in the wood.
(caused by uneven sharpening of the saw chain or
damage to one side only)
Sharpen the saw chain frequently but a little each time.
routine resharpening. When the saw chain has been
resharpened several times, have it sharpened in our
authorized service center.
Sharpening criteria:
WARNING: An excessive distance between
the cutting edge and depth gauge increases the
risk of kickback.
Fig.24: 1. Cutter length 2. Distance between cutting
edge and depth gauge 3. Minimum cutter
length (3 mm)
lengths prevent the saw chain from running
smoothly and may cause the saw chain to break.
— Do not sharpen the chain when the cutter length
has reached 3 mm or shorter. The chain must be
replaced with new one.
— The chip thickness is determined by the distance
between the depth gauge (round nose) and the
cutting edge.
— The best cutting results are obtained with following
distance between cutting edge and depth gauge.
• Chain blade 90PX : 0.65 mm
• Chain blade 91PX : 0.65 mm
• Chain blade 25AP : 0.65 mm
Fig.25
— The sharpening angle of 30° must be the same on
to run roughly and unevenly, accelerate wear, and
lead to chain breaks.
-
ening angle is kept against the teeth.
• Chain blade 90PX : 55°
• Chain blade 91PX : 55°
• Chain blade 25AP : 55°
saw chains to sharpen the chain. Normal round
follows:
• Chain blade 90PX : 4.5 mm
• Chain blade 91PX : 4.0 mm
• Chain blade 25AP : 4.0 mm
-
stroke.
of this shortest cutter becomes the standard for all
other cutters on the saw chain.
Fig.26: 1. File 2. Saw chain
has markings for the correct sharpening angle of
30° (align the markings parallel to the saw chain)
and limits the depth of penetration (to 4/5 of the
Fig.27: 1. File holder
— After sharpening the chain, check the height of the
depth gauge using the chain gauge tool (optional
accessory).
Fig.28
Cleaning the guide bar
Chips and sawdust will build up in the guide bar groove.
Clean out the chips and sawdust every time when you
sharpen or replace the saw chain.
Fig.29
Cleaning the sprocket cover
Chips and saw dust will accumulate inside of the
sprocket cover. Remove the sprocket cover and saw
chain from the tool then clean the chips and saw dust.
Fig.30
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