Ruris RM280, Manual

Page: 154 / 251

EN
30
Fig.27
When servicing the air filter, plug the air vent to prevent dust or foreign matter from
entering the cylinder suction system. (Fig. 27).
Cylinder fins
Dust trapped between the cylinder fins will cause
the engine to overheat. Periodically check the fins
after removing the air filter and cylinder guard.
When fitting the cylinder guard, make sure that the
commutator wires and ring seals are positioned
correctly.
11.5 GUIDE BAR MAINTENANCE
Reverse the bar occasionally to prevent partial wear. The
bar guide should always be symmetrical. Check that the
bar guide is not worn. Apply a ruler to the bar on the
outside and if you notice a gap between the bar and the
ruler, it is worn.
(1) Ruler (2) Distance (3) Lack of distance (4) Chain deviations
When the guide bar is removed, remove the sawdust from the track channel and oil hole.