Chain Brake; Oil Pump (Automatic/Adjustable) - Efco MT 2500 Manuel D'utilisation

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MAINTENANCE
The Spark Arrester System needs a periodic and accurate
maintenance and cleaning, in particular:
- check periodically the spark arrester screen and substitute it
when holes, bends or deformations appear;
- check carefully if dust, debris or organic material is in contact
with parts of the Spark Arrester System; check especially the
gap between the muffler and the shield; clean it often with
tools or shop air.
Never remove the muffler, always contact a Servicing Dealer for
cleaning the spark arrester system screen.
For compliance with the standard, one spiked bumper p.n.
8850230145 (A, Fig. 94) have to be mounted, as provided on the
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chainsaw.
WARNING: Do not operate your chainsaw if the
muffler is damaged, missing or modified. An
improperly maintained muffler will increase the risk
of fire and hearing loss.
Muffler
WARNING – This muffler incorporates a catalytic
converter, needed in order to ensure the engine
complies with current emissions standards. Never
attempt to modify or remove the catalytic converter: in
doing so, you will be breaking the law.
WARNING – Mufflers with catalytic converters
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become very hot during operation, and retain heat for
a long time after the engine has been stopped. This
is the case even with the engine idling. Contact can
burn the skin. Always remember the potential fire risk!
CAUTION – If the muffler is damaged, it must be
replaced. If the muffler frequently becomes blocked,
this could be an indication that the efficiency of the
catalytic converter is limited.
WARNING – Do not use the chain saw if the muffler is
damaged or missing, or has been altered in any way.
Operating the machine with an improperly maintained
muffler will increase the risk of fire and hearing loss.
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Chain Brake

If the chain brake does not work properly, remove the clutch
cover and clean the chain brake components. Check for wear
on the brake band (A, Fig. 95) and replace if worn or deformed.
WARNING: If the brake band is worn too thin it may
break when the chain brake is triggered. With a broken
brake band, the chain brake will not stop the chain.
The chain brake should be replaced by an authorized
service dealer if any part is worn to less than 0.02" (0.6
mm) thick. Repairs on a chain brake should be made
by an authorized service dealer. Take your unit to the
place of purchase if purchased from a servicing dealer,
or to the nearest authorized service dealer.
Always keep the chain brake mechanism clean and lightly
lubricate the linkage (B, Fig. 96).
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Always test the chain brake performance after servicing or
cleaning per the Operation - Chain Brake Section.
WARNING: Check and, if damaged, replace the
chain catcher/safety stop (C, Fig. 95).

Oil Pump (Automatic/Adjustable)

Flow adjustment is pre-set by the manufacturer. Oil flow can be
adjusted by the operator according to specific requirements by
means of the special adjusting screw (D, Fig. 97). Oil flow occurs
only when the chain is moving.