Scheppach MFH5200-4P Originalbetriebsanleitung Seite 47

3. Clean the extension (15c) and the protective cover
(15) after each use.
8.5 Fit the chainsaw guide bar (20) and
saw chain (21) (Fig. 1, 7-9)
WARNING
Danger of injury when handling the saw
chain or the blade!
– Wear cut-resistant gloves.
ATTENTION
Blunt blades overload the product! Do not use the prod-
uct if the cutting device is faulty or heavily worn.
Notes:
• A new saw chain stretches and needs to be re-ten-
sioned more often. Check and adjust the chain ten-
sion regularly after each cut.
• Only use saw chains and blades designed for this
product.
CAUTION
An incorrectly installed saw chain leads to uncontrolled
cutting behaviour by the product!
When fitting the saw chain, observe the prescribed run-
ning direction!
1. Turn the fastening nut (19a) anti-clockwise, so that the
chain wheel cover (19) is removed.
Use an open-ended spanner size 8/10 mm (48).
2. Turn the chain tensioning screw (33) anti-clockwise to
loosen the chain tension.
Use an installation spanner (45).
3. Lay out the saw chain (21) in a loop so that the cutting
edges are aligned clockwise. To align the saw chain
(21), follow the symbols (arrow) above the chain
wheel (30).
4. Place the saw chain (21) in the groove of the chain-
saw guide bar (20).
5. Guide the saw chain (21) around the chain wheel (30)
and check the alignment of the saw chain (21).
Make sure that the teeth of the saw chain (21) engage
securely in the chain wheel (30).
6. Insert the chainsaw guide bar (20) on the guide pin
(32) and the chain tensioning bolt (31). The guide pin
(32) must be in the elongated hole and the chain ten-
sioning bolt (31) must be in the lower hole on the
chainsaw guide bar (20).
7. Fit the chain cover (19) back on.
8. Tighten the fastening nut (19a) clockwise hand-tight.
Use an open-ended spanner size 8/10 mm (48).
9. Check the fit of the saw chain (21) again and tension
the saw chain (21) as described in 8.6.
10. Removal of the saw chain (21) and the chainsaw
guide bar (20) is carried out in reverse order.
Note:
Only tighten the fastening nut once the chain tension has
been set.
8.6 Tensioning the saw chain (21)
(Fig. 1, 7, 9)
WARNING
Risk of injury from the saw chain jumping off!
An insufficiently tensioned saw chain can come off
during operation and cause injuries.
– Check the saw chain tension frequently.
– The chain tension is too low if the drive links come
out of the groove on the underside of the guide rail.
– Adjust the tension of the saw chain properly if the
saw chain tension is too low.
1. Loosen the fastening nut (19a) by a few turns.
Use an open-ended spanner size 8/10 mm (48).
2. Set the chain tension using the chain tensioning screw
(33).
Use an installation spanner (45).
– Clockwise - increases the chain tension
– Anti-clockwise - reduces the chain tension
3. Turn the saw chain (21) by hand, to check it runs free-
ly. It must glide freely in the chainsaw guide bar (20).
4. Re-tighten the fastening nut (19a).
Use an open-ended spanner size 8/10 mm (48).
The chain tension and chain lubrication have a consider-
able influence on the service life of the saw chain.
The saw chain is correctly tensioned when it does not sag
on the underside of the chainsaw guide bar and can be
pulled all the way round with a gloved hand. When pulling
on the saw chain with 9 N (approx. 1 kg) tractive force,
the saw chain and chainsaw guide bar must not be more
than 7 mm apart.
It should be possible to pull the saw chain (21) off by
hand by a maximum of 9 mm using a moderate pulling
force.
Note:
• The tension of a new saw chain must be checked af-
ter a few minutes in operation, and adjusted if neces-
sary.
• The tensioning of the saw chain should be carried out
in a clean place free from sawdust and the like.
• Correct tensioning of the saw chain is for the safety of
the user and reduces or prevents wear and chain
damage.
• We recommend that the user check the chain tension
before starting work for the first time.
ATTENTION
When working with the saw, the saw chain heats up
and expands slightly as a result. This "stretching" is to
be expected especially with new saw chains.
9 Before commissioning
ATTENTION
Always carry out assembly and adjustments on the
product with the engine switched off and disconnect the
spark plug connector.
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