Maintenance Of Saw Chain And Guide Bar - Zenoah G3300 Owner's Manual

G3300 / G3300EZ / G3300E

8. Maintenance of Saw Chain and Guide Bar

Saw Chain
It is very important for smooth and safe op-
eration 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 filing:
• 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: 91VG
File size: 5/32 in (4.0 mm)
Place the file on the cutter and push straight forward.
Keep the file position as illustrated.
After each cutter has been filed, check the depth gauge
and file it to the proper level as illustrated.
Appropriate gauge checker
.025" " " " " (0.64 mm)
Depth gauge standard
GB-14
Make the shoulder round
Be sure to round off the front edge to reduce
the chance of kickback or tie-strap breakage.
Make sure every cutter has the same length and edge
angles as illustrated.
Cutter length
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 out-
side of a cutter. If a gap is observed between them,
the rail is normal. Otherwise, the bar rail is worn.
Such a bar needs to be corrected or replaced.
Ruler
Gap
No gap
Chain tilts
WARNING:
This saw is equipped with one of the following low
kickback bar/chain combinations:
Saw Model Bar Size
G3300
G3300EZ 14
G3300E
Filing angle
Side plate angle
Top plate cutting angle
Zenoah Part Number
Guide Bar Saw Chain
848CB24G23 2931-52210
(91VG)