Difficult Starting; Chain Brake - McCulloch MAC 20X Instruction Manual

6. Reinstale la cubierta de la bujía.
7. Reinstale la tapa del cilindro y tos tres
tornillos. Apriete firmemente.
Tapa del
Tornillos
cilindro
Cubierta
de la
bujía
Bujía
AFILADO DE LA CADENA
ADVERTENCIA
: Las técnicas de
afilado de la cadena y/o el mantenimiento del
marcador de profundidad incorrectos au-
mentan las probabilidades de reculadas,
que pueden producir lesiones graves.Use
guantes protectores al manejar la cadena.
La cadena tiene filo y podría causarle graves
cortaduras, aun cuando ésta no se en-
cuentre en movimiento.
Condiciones que indican la necesidad de
afilar la cadena:
S Reducción del tamaño de las astillas de
madera. El tamaño de las astillas de madera
se reduce a medida que la cadena se desafi-
la, hasta volverse más un polvo que una as-
tilla. Observe que la madera muerta o podri-
da no produce una buena astilla.
S La sierra corta de lado o en ángulo.
S La sierra debe ser forzada a través del corte.
Herramientas necesarias:
S Lima redonda de 5/32 de pulgada (4 mm) de
diámetro y soporte para lima
S Lima plana
S Herramienta marcadora de profundidad
PARA AFILAR LA CADENA:
1. Mueva el interruptor ON/STOP a la posi-
ción STOP.
2. Verifique la tensión correcta de la cade-
na. Ajústela si es necesario.
3. Afile las cuchillas.
S Para afilar las cuchillas, ubique el
nivel del soporte de la lima (90˚) de
modo que se apoye sobre los bordes
superiores de la cuchilla y el
marcador de profundidad.
AVISO:
La cadena tiene cuchillas
del lado izquierdo y del lado derecho.
Soporte para Lima
Lima
90˚
Cuchilla Marcador de Profundidad
S Alinee las marcas de 30˚ del soporte
para lima, paralelas a la barra y al
centro de la cadena.
Cuchilla
30˚
Cuchilla
Marca del
Soporte para Lima
S Afile primero las cuchillas de un lado de
la cadena. Lime desde el interior de
cada cuchilla hacia el exterior.
Después, gire la sierra de cadena y
repita el proceso en el otro lado de la
cadena.
S Lime sólo el golpe de avance; use 2 o
3 golpes por borde de corte.
S Mantenga todas las cuchillas de la
misma longitud cuando las lima.
S Lime lo suficiente como para eliminar
cualquier daño en los bordes de
corte (placa lateral y placa superior
de la cuchilla).
Cuchillas Remueva daño
igual longitud
Placa
Placa
Superior
Lateral
S Lime la cadena según las
especificaciones, tal como se ilustra.
80˚
60˚
30˚
Ángulo de gancho
0,65 mm
Esquina
Redondeada
Correcto
Fuera Elevada el
Ángulo del Gancho
Cuadrado Esquina
Incorrecto
Incorrecto
ADVERTENCIA
: Mantenga
ángulo de gancho correcto de acuerdo con las
especificaciones del fabricante de la cadena
que usa. Si el ángulo del gancho es incorrecto,
aumentan las probabilidades de reculadas,
que pueden producir lesiones graves.
4. Verifique y baje los marcadores de pro-
fundidad.
68
To stop the engine, move the ON/STOP
switch to the STOP position.
To start the engine, hold the saw firmly on
the ground as illustrated below. Make sure
the chain is free to turn without contacting
any object.
Use only 15" --- 18" of rope per pull.
Hold saw firmly while pulling starter rope.
IMPORTANT POINTS TO REMEMBER
When pulling the starter rope, do not use the full
extent of the rope as this can cause the rope to
break. Do not let starter rope snap back. Hold
the handle and let the rope rewind slowly.
For cold weather starting, start the unit at full
choke; allow the engine to warm up before
squeezing the throttle trigger.
: Do not cut material with the choke/fast
NOTE
idle lever at the FULL CHOKE position.
STARTING A COLD ENGINE (or a
warm engine after running out of
fuel)
: In the following steps, when the cho-
NOTE
ke/fast idle lever is pulled out to the full ex-
tent, the correct throttle setting for starting is
set automatically.
ON/STOP SWITCH
1. Move ON/STOP switch to the ON position.
2. Slowly press primer bulb 6 times.
3. Pull out choke/fast idle to the full extent (to
the FULL CHOKE position).
4. Pull the starter rope sharply 5 times with
your right hand. Then, proceed to the next
step.
: If the engine sounds as if it is trying
NOTE
to start before the 5th pull, stop pulling and
immediately proceed to the next step.
5. Push the choke/fast idle lever in to the
HALF CHOKE position.
CHOKE/FAST IDLE LEVER
el
Choke/
fast idle lever
6. Pull the starter rope sharply with your
right hand until the engine starts.
7. Allow the engine to run for approximately
30 seconds. Then, squeeze and release
throttle trigger to allow engine to return to
idle speed.
STARTING A WARM ENGINE
1. Move ON/STOP switch to the ON position.
2. Slowly press the primer bulb 6 times.
3. Pull the choke/fast idle lever out to the
HALF CHOKE position.
4. Pull the starter rope sharply with your
right hand until the engine starts.
5. Squeeze and release throttle trigger to al-
low engine to return to idle speed.
DIFFICULT STARTING (or starting a
flooded engine)
The engine may be flooded with too much
fuel if it has not started after 10 pulls.
Flooded engines can be cleared of excess
fuel by pushing the choke/fast idle lever in
completely (to the OFF CHOKE position)
and then following the warm engine starting
procedure listed above. Ensure the ON/
STOP switch is in the ON position.
Starting could require pulling the starter rope
handle many times depending on how badly
the unit is flooded. If engine fails to start, re-
fer to the TROUBLESHOOTING TABLE.

CHAIN BRAKE

WARNING
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" (0,5
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
(SIDE VIEW)
from a servicing dealer, or to the nearest autho-
ON
rized master service dealer.
S This saw is equipped with a chain brake.
STOP The brake is designed to stop the chain if
kickback occurs.
S The inertia activated chain brake is activated
if the front hand guard is pushed forward, ei-
ther manually or by centrifugal force.
S If the brake is already activated, it is disen-
gaged by pulling the front hand guard back
toward the front handle as far as possible.
S When cutting with the saw, the chain brake
must be disengaged.
(SIDE VIEW)
Braking function control
CAUTION:
checked several times daily. The engine
must be running when performing this proce-
OFF HALF FULL
dure. This is the only instance when the saw
should be placed on the ground with the en-
gine running.
Place the saw on firm ground. Grip the rear
handle with your right hand and the front han-
dle with your left hand. Apply full throttle by
fully depressing the throttle trigger. Activate
9
: If the brake band is worn
Disengaged
Engaged
The chain brake must be