MA1
MA2
MA3
MA4
MA5
■ OILING PORT
Dismount the guide bar and check
the oiling port for clogging. (MA1)
(1) Oiling port
■ GUIDE BAR
Remove sawdust in the bar groove
and the oiling port. (MA2)
(1) Groove
(2) Oiling port
(Type: Sprocket nose)
Grease the nose sprocket from the
feeding port on the tip of the bar.
(MA3)
(1) Grease port
(2) Sprocket
■ OTHERS
Check for fuel leakage and loose
fastenings or damage to major parts,
especially housing joints and guide
bar mounting. If any defects are
found, make sure to have them
repaired before operating again.
■ SPROCKET
Check for extensive wear, and
replace it when the teeth are worn
over 0.3mm. (MA4)
(1) Sprocket
■ GUIDE BAR
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.(MA5)
(1) Ruler (2) Gap
(3) No gap (4) Chain tilts
