Hyundai HYMT5080 User Manual page 27

7.5 Oiling port.
7.5.1 Dismount the guide bar and check the
oiling port (1) for clogging.
7.6 Guide bar.
7.6.1 Remove excess sawdust from the
groove (1) in the guide bar (2).
7.6.2 Grease the nose sprocket (3) from
the feeding port at tip of bar (4)
7.7 Bar rail.
7.7.1 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, this will need to be corrected
before further use.
7.8 Sprocket.
7.8.1 Check for excessive wear on the sprocket (1) ,
when teeth are worn over 0.3 mm the
sprocket must be replaced.
7.9 Chain.
It is very important for smooth and safe operation to keep saw chain
sharp.
7.9.1 Your cutters will need to be sharpened when sawdust becomes power-like
or you need extra force to saw into the wood, or if the cut does not go
straight, or if fuel consumption increases.
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