Sharpening Saw Chain; Adjusting Depth Gauge - Maruyama TPP27 Manuel Du Propriétaire/De L'utilisateur

5. Reinstall the spark arrester and tail onto muffler,
then reinstall and tighten the two socket head
screws.
6. Reinstall the cylinder cover and the air filter
cover.

Sharpening saw chain

Whenever wood chips become small and fine or the
wood cannot be cut without pressing the pruner hard
against it, then it may be necessary to sharpen the saw
chain.
1. Tighten the saw chain slightly firmer than usual
then secure the pruner's main unit.
2. Place a file with a 4.0 mm (5/32 in.) diameter
against the cutter and extend 1/5 of it beyond the
cutter.
3. Press the file against the cutter at its base in a
30-degree angle from the vertical line and move
the file straight ahead from the inner side to the
outer side of the cutter.
4. Shift the file so that it remains in a 90-degree
angle against the guide bar.
5. Once one side of the cutter is sharpened, sharpen
the other side of the cutter. Be sure to keep the
length and angle uniform throughout.
IMPORTANT:
• The spark arrester should be inspect-
ed and cleaned after every 25 hours
of use.
• Replace the screen if it cannot be thor-
oughly cleaned, or if it is damaged.

Adjusting depth gauge

The depth gauge determines how deep the cutter cuts
into the wood.
1. When the cutter lengths become shorter due to
sharpening, the depth gauge must also be cut
back.
30°
Maintain uniform lengths of cutters
Depth gauge setting
Side plate filing angle
Cutter Maintenance Specifications
— US-25 —
90°
File
Guide bar
Sharpen shaded area
0.64mm
Top plate
Depth gauge
cutting angle
80°
30°
Top plate filing angle
30°
55°