McCulloch CS 330 Manual De Instrucciones página 16

File Rail Edges
and Sides
Square
Worn Groove
Replace guide bar when the groove is worn,
the guide bar is bent or cracked, or when
excess heating or burring of the rails occurs.
If replacement is necessary, use only the guide
bar specified for your saw in the repair parts list
or on the decal located on the chain saw.
SPARK PLUG
The spark plug should be replaced each
year to ensure the engine starts easier and
runs better. Ignition timing is fixed and non-
adjustable.
1. Loosen 3 screws on cylinder cover.
2. Remove the cylinder cover.
3. Pull off the spark plug boot.
4. Remove spark plug from cylinder and
discard.
5. Replace with Champion RCJ- -7Y spark
plug and tighten securely with a 19 mm
socket wrench. Spark plug gap should be
0,5 mm.
6. Reinstall the spark plug boot.
7. Reinstall the cylinder cover and 3
screws. Tighten securely.
Spark
Plug Boot
Spark
Plug
CHAIN SHARPENING
WARNING:
Improper chain sharpen-
ing techniques and/or depth gauge mainte-
nance will increase the chance of kickback
which can result in serious injury.
WARNING:
when handling chain. The chain is sharp and
can cut you even when it is not moving.
Conditions which indicate the need for chain
sharpening:
S Reduction in size of wood chips. The size
of the wood chip will decrease as the chain
gets duller until it becomes more like a
powder than a chip. Note that dead or
rotted wood will not produce a good chip.
S Saw cuts to one side or at an angle.
S Saw has to be forced through the cut.
SERVICE AND ADJUSTMENTS
Correct Groove
Cylinder
Cover
Wear protective gloves
Tools required:
S 5/32 inch (4 mm) diameter round file and
file holder
S Flat file
S Depth gauge tool
TO SHARPEN CHAIN:
1. Move ON/STOP switch to the STOP
position.
2. Check chain for proper tension. Adjust
chain tension if necessary.
3. Sharpen cutters.
S To sharpen the cutters, position the
file holder level (90° ) so that it rests
on the top edges of the cutter and
depth gauge.
NOTE:
The chain has both left and
right hand cutters.
File Holder
File
Cutter
S Align the 30° file holder marks paral-
lel with the bar and to the center of the
chain.
30°
File Holder Line
S Sharpen cutters on one side of the
chain first. File from the inside of each
cutter to the outside. Then, turn the
chain saw around and repeat the pro-
cess for the other side of the chain.
S File on the forward stroke only. Use 2
or 3 strokes per cutting edge.
S Keep all cutters the same length
when filing.
S File enough to remove any damage
to cutting edges (side plate and top
plate of cutter).
All Cutters
Same Length
S File chain to meet the specifications
as shown.
30°
16
90°
Depth Gauge
Cutter
Cutter
Remove Damage
Top Plate
Side Plate
80°
60°