Maintenance - Scheppach MTC53-4BP Originalanleitung

Basic cutting technique
Heavy branches break off easily when sawing. They tear
long strips of bark away from the trunk, which damages
the tree sustainably. The following section technique can
significantly reduce this risk:
• Saw the first branch about 10 cm from the trunk.
• Put in about 15 cm from the base of the top of a further
section.
• Saw until the branch breaks. The risk of injury on the
trunk is no.
• Finally, remove with a clean cut from the top of the
trunk along the remaining.
• Thus, the damage to the tree are kept as low as
possible, we recommend the interface additionally to
seal with grafting wax.
Hazards by reactive forces
Reactive forces occur during operation of the saw chain.
The forces which are applied to the wood are against
the operator. They occur when the moving chain comes
into contact with a fixed object such as a branch or is
pinched. These forces can lead to a loss of control and
injury.
Understanding the origin of these forces can help you
to avoid the scare and the loss of control. This saw is
designed to make the return effects are not as noticeable
as with traditional chainsaws.
Always still keep a firm grip and a good level to maintain
control of the tool in doubt.
The most common effects are:
• setback
• recoil,
• retreat
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 underside
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 happens when the chain is not running at full speed
when in contact with the wood.
38 GB
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 suddenly
stuck because it is jammed or encounters a foreign
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 otherwise.
Extension (Fig. 63)
Assemble the extension 80 cm (27) as shown in Fig. 63
Only for pole saw.

10. Maintenance

INJURY WARNING: Always wear protective gloves
when working on or around cutting tools.
Before performing any maintenance or cleaning work,
always turn off the engine and pull out the spark boot
plug.
1. Do not spray the unit with water. It damages the
engine.
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, otherwise the engine
will overheat because of too much friction. Fig. 45
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 correspondingly
shorter.
• Before starting work, after tank filling, 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 damages of the
tool, when you follow the instructions in this manual.