Zenoah EXZ2500S-BC - Manual (Page 41)

9. Maintenance
(EX-PS only)
The bar rail should always be a 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 between
them, the rail is normal. Otherwise, the bar rail is
worn. Such a bar needs to be corrected or
replaced.(MA4)
(1) Ruler
(2) Gap
(3) No gap
(4) Chain tilts
■ SPROCKET
Check for extensive wear, and replace it when the
teeth are worn over 0.3mm. (MA5)
(1) Sprocket
■ 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)
WARNING
WARNING
EX-PS
MA4
EX-PS
MA5
EX-PS
MA6
41 