23
English
8. Maintenace
MA6
MA7
MA8
■ SAW CHAIN
It is very important for smooth and
safe operation to keep the cutters
always sharp.
Your cutters need to be sharpened
when:
• Sawdust becomes powder-like.
• You need extra force to saw in.
• The cut way 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
your chain.
Chain type: 90SG
File size: 5/32 in (4.0mm)
Place your file on the cutter and push
straight forward. Keep the file
position as illustrated. (MA6)
After every cutter has been set,
check the depth gauge and file it to
the proper level as illustrated. (MA7)
Be sure to round off the front edge
to reduce the chance of kickback
or tie-strap breakage.
(1) Appropriate gauge checker
(2) Make the shoulder round
(3) Depth gauge standard
Make sure every cutter has the same
length and edge angles as illustrated.
(MA8)
(4) Cutter length
(5) Filing angle
(6) Side plate angle
(7) Top plate cutting angle
