Maintenance - Scheppach MFH380-20Li Dual Original Anleitungen

Kickback
The setback can occur when the moving saw chain
meets at the upper quarter of the guide rail on a solid
object or is pinched.
The cutting force exerted on the chain from the saw,
a rotational force in the opposite direction to the chain
travel. This leads to an upward movement of the guide
rail.
Avoid kickback
The best protection is to avoid situations that lead to
setbacks.
1. Keep the position of the upper guide rail always in
mind.
2. Leave this place never come into contact with an
object. Cut anything with it. Be especially careful
near wire fences and cutting small, hard knots, in
which the chain can easily pinch.
3. Cut only one branch at a time.
Withdrawal
The withdrawal occurs when the chain on the under-
side of the bar suddenly stuck because it is jammed
or encounters a foreign object in the wood. The chain
then pulls the saw forward. The withdrawal often hap-
pens when the chain is not running at full speed when
in contact with the wood.
Avoid withdrawal
Be aware of the forces and situations that can lead to
jamming of the chain on the underside of
the bar.
Always start with running at full speed chain to cut.
Recoil
The recoil occurs when the chain on top of rail sud-
denly stuck because it is jammed or encounters a for-
eign object in the wood. The chain can jerkily hold the
saw against the operator. Rebounds happen often if
the top rail is used for cutting.
Avoid recoil
Be aware of the forces and situations that can lead to
jamming of the chain on top of rail.
Do not cut more than one branch at a time.
Do not tilt the rail to the side when you pull them out
of a cutting gap, since the chain could get caught oth-
erwise.
10.

Maintenance

NJURY WARNING!
Before working on the device, disconnect the
mains cable from the socket.
Always wear protective gloves when working on
or around cutting tools.
38 | GB
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For non-use, transport or storage always attach the
transport guard to all cutting tools. Fig. 1 (14a, 15a,
17c)
1. Do not spray the unit with water. It damages the en-
gine.
2. Clean the unit with a cloth, hand brush, etc.
3. Use a moist piece of cloth to clean the plastic parts.
Do not use any cleaning agents, solvents, or sharp
objects.
4. During the course of work, wet grass and weed
wraps around the drive shaft below the cutting
guard for technical reasons. Remove this, other-
wise the engine will overheat because of too much
friction.
Regular checks
Keep in mind that following specifications relate to normal usage.
Owing to circumstances (longer periods of daily work, severe
dust exposure, etc.), the specified intervals will become corre-
spondingly shorter.
• Before starting work, after impact or dropping:
Check the cutting tools for secure seating, general
visual check for cracks and damage.
Immediately replace damaged or blunt cutting
tools, even in the event of minor hairline cracks.
Sharpen cutting tools (also when required).
• Weekly inspection:
Lubrication of gear (also, if necessary).
• If necessary:
Retighten accessible fastening screws and nuts.
You will avoid excessive wear and tear and dam-
ages of the tool, when you follow the instructions in
this manual.
Replacing the line spool/cutting line Fig. 18-23
1. Pull off the line guard cap from the line spool (5) by
forcefully pressing between the retaining plates.
2. Remove the spool with line remaining and the com-
pression spring.
3. Remove the used up spool.
4. Take the new line spool and pull out 10 cm at both
lines each.
5. Now, place the line spool (5) on the tapered spring,
and guide both lines each through the round metal
lugs at the line spool housing.
6. Then place the spool cover on the new line spool
(5). Turn it so that the plates of the spool cover are
pushed with the springs in the line spool housing.
7. Now, press the spool cover together with the line
spool, until it engages in the line spool housing.
8. The knife (A) in the protective hood (18) shortens
the trimming line to the correct length, when the en-
gine starts again.
Grinding the safety hood blade
The safety hood blade can become blunt over time.
• When you notice this, undo the screw holding the