Guide Bar - Urrea MS818 Manual De Usuario

line. When putting the filter back into the tank,
make sure that air comes to the front right cor-
ner. Also clean off dirt in the tank.
4. Spark plug. Clean the
electrodes with a
brush and reset the gap to
0,65 mm as necessary.
5. Sprocket. Check for cracks and for excessive
wear interfering with the chain drive. If the
wear is considerable, replace it with new one.
Never fit a new chain on a worn sprocket, or a
worn chain on a new sprocket.
SAW MAINTENANCE
SAW CHAIN
- It is very important for smooth and safe opera-
tion to always keep the cutters sharp.
The cutters need to be sharpened when:
- Sawdust becomes powder-like.
- You need extra force to saw in.
- The cut path does not go straight.
- Vibration increases.
- Fuel consumption increases.
Cutter setting standards:
- Be sure to wear safety gloves.
Before filling:
- Make sure the saw chain is held securely.
- Make sure the engine is stopped
- Use a round file of proper size for the chain.
Chain type: 91 VG
File size: 5/32" (4,0 mm)
Place the file on the cutter and push straight
forward. Keep the file position as illustrated.
wire
E N G L I S H •
After each cutter has been filed, check the depth
gauge and file to the proper lever as illustrated.
Appropriate
gauge checker
Depth gauge
standard: 58
NOTE: Be sure to round off the front edge to re-
duce the chance of kickback or tie-strap break-
age. Make sure every cutter has the same length
and eager angles as illustrated.
Cutter length
Side plate angle

GUIDE BAR

- Reverse the bar occasionally to prevent partial
wear.
- The bar rail should always be square. Check for
wear of the bar rail. Apply a ruler to the bar and
the outside of a cutter. If a gap is observed be-
tween them, the rail is normal. Otherwise, the
bar rail is worn. Such a bar needs to be corrected
or replaced.
Regla
Con espacio
Sin espacio
Inclinación de la cadena
NOTE: if you see any space between them, the
rail is fine, otherwise the bar is worn out. The
bar needs to be recalibrated or replaced.
Us er 's M an u a l
Make the shoulder
round
Filling angle
Top plate cutting
angle
19