Zenoah GZ4350 Manuel D'utilisation page 32

Note: Always check the spark plug before you take any
further action if the product is low on power, difficult to
start or runs poorly at idle speed.
1. Clean the spark plug if it is dirty.
2. Do a check of the electrode gap and make sure that
it is 0,65 mm.
3. Replace the spark plug once a month or earlier if
necessary.
0.65 mm
0.025"
CAUTION: Always use the recommended
spark plug type! Use of the wrong spark plug
can damage the piston/cylinder. For
recommended spark plug, see heading
Technical data on page 39
Sharpening of the saw chain
General advice on sharpening the cutting
teeth
Never use a blunt saw chain. When the saw chain is
blunt you have to exert more pressure to force the bar
through the wood and the chips will be very small. If the
saw chain is very blunt it will produce wood powder and
no chips or shavings.
A sharp saw chain eats its way through the wood and
produces long, thick chips or shavings.
The cutting part of the saw chain is called the cutter and
consists of a cutting tooth (A) and the depth gauge (B).
The cutters cutting depth is determined by the difference
in height between the two (depth gauge setting).
32
A
B
When you sharpen a cutting tooth there are four
important factors to remember:
• Filing angle.
• Cutting angle.
• File position.
• Round file diameter.
It is very difficult to sharpen a saw chain correctly
without the right equipment. Zenoah recommends that
you use our file gauge. This will help you obtain the
maximum kickback reduction and cutting performance
from your saw chain.
WARNING: Departure from the sharpening
instructions considerably increases the risk
of kickback.
Note: See instructions under
angles on page 41 for information about sharpening
your saw chain.
To sharpen the cutting teeth
To sharpen cutting teeth you will need a round file and a
file gauge. See instructions under
filing angles on page 41 for information on the size of
Filing equipment and filing
Filing equipment and
320 - 005 - 27.09.2017