Black Max BM5020 Manual Del Operador página 35

NOTE: Be careful not to cross-thread the spark
plug. Cross-threading will seriously damage the
cylinder.
CLEANING THE EXHAUST PORT,
MUFFLER, AND SPARK ARRESTOR
NOTICE:
This product is equipped with a spark arrestor
that has been evaluated by the USDA Forest
Service; however, product users must comply
with Federal, State, and local fire prevention
regulations. Check with appropriate authorities.
Contact customer service or a qualified service
center to purchase a replacement spark arrestor.
NOTE: Depending on the type of fuel used, the type
and amount of lubricant used, and/or your operating
conditions, the exhaust port, muffler, and/or spark
arrestor screen may become blocked with carbon
deposits. If you notice a power loss with your gas
powered tool, you may need to remove these de-
posits to restore performance. We highly recommend
that only qualified service technicians perform this
service.
The spark arrestor must be cleaned or replaced every
50 hours or yearly to ensure proper performance of
your product. Spark arrestors may be in different
locations depending on the model purchased. Please
contact your nearest service dealer for the location
of the spark arrestor for your model.
WARNING:
Never run the chain saw without a muffler
equipped with a spark arrestor in place. Failure
to do so could result in a fire that could cause
serious personal injury.
INSPECTING AND CLEANING CHAIN BRAKE
See Figures 69 - 70.
 Remove the clutch cover and clean the chain brake
components. Check wear on the brake band and
replace if worn or deformed. The band thickness
should not be less than 0.024 in., or worn halfway
through.
 Always keep the chain brake mechanism clean
and lightly brush the linkage.
MAINTENANCE
CHAIN CATCHER
CLEAN THE CHAIN BRAKE
 Always test the chain brake performance after
cleaning. Refer to Operating Chain Brake for
additional information.
 Check the chain catcher and replace if damaged.
WARNING:
Even with daily cleaning of the mechanism, the
dependability of a chain brake to perform under
field conditions cannot be certified. Keep the
safety tip nose guard on the saw's guide bar and
use proper cutting techniques.
Page 35 — English
BRAKE BAND
CLUTCH
COVER
LUBRICATE THE CHAIN
Fig. 69
BRAKE LINKAGE
Fig. 70