G3300 / G3300EZ
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
•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.
Be sure to round off the front edge to reduce the chance of kickback or
Make sure every cutter has the same length and edge angles as illustrated.
Cutter length
Filing angle
Side plate angle
Top plate cutting 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 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
After each cutter has been filed, check the depth gauge and file it to the proper level as illustrated.
Appropriate gauge checker
Make the shoulder round
91VG .025″ (0.64 mm)
Depth gauge standard
No gap
Chain tilts
WARNING:
This saw is equipped with one of the following low kickback bar/chain combinations:
Komatsu Zenoah Part Number Saw Model Bar Size Guide Bar Saw Chain G3300/G3300EZ 14 848CB24G23
