Sharpening Saw Chain; Adjusting Depth Gauge - Maruyama QC-PS Manuel Du Propriétaire

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:
• T h e s p a r k a r r e s t e r s h o u l d b e
inspected and cleaned after every 25
hours of use.
• Replace the screen if it cannot be
thoroughly 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.
2. Cut down the depth gauge using a flat file in a
way that the depth gauge is positioned 0.64 mm
(0.025 in.) lower than the leading edge of the
cutter.
3. Once cut back, grind the tip of the depth gauge
round.
30°
Maintain uniform lengths of cutters
Depth gauge setting
Side plate filing angle
Cutter Maintenance Specifications
— US-14 —
90°
File
Guide bar
Sharpen shaded area
0.64mm
Top plate
Depth gauge
cutting angle
80°
30°
Top plate filing angle
Oil discharge holes
30°
55°