Dolmar MS-20U Manuel D'instructions Original page 5

Method of operation
– Only use the Brush cutter or Grass trimmer in good light and visibility.
During the winter season beware of slippery or wet areas, ice and snow (risk
of slipping). Always ensure a safe looting.
– Never cut above waist height.
– Never stand on a ladder and run the Brush cutter or Grass trimmer.
– Never climb up into trees to perform cutting operation with the Brush cutter or
Grass trimmer.
– Never work on unstable surfaces.
– Remove sand, stones, nails etc. found within the working range.
Foreign particles may damage the cutting tool and can cause dangerous
kick-backs.
– Before commencing cutting, the cutting tool must have reached full working
speed.
Kickback
– When operating the Brush cutter or Grass trimmer, uncontrolled kickback
may occur.
– This is particularly the case when attempting to cut within a blade segment
between 12 and 2 o'clock.
– Never apply the Brush cutter or Grass trimmer within a segment between 12
and 2 o'clock.
– Never apply this segment of the Brush cutter or Grass trimmer blade to solids,
such as bushes and trees, etc., having a diameter in excess of 3 cm or the
Brush cutter or Grass trimmer will be deflected at great force with the risk of
injuries.
Kickback prevention
To avoid kickbacks, observe the following:
– Operation within a blade segment between 12 and 2 o'clock presents positive
hazards, especially when using metal cutting tools.
– Cutting operations within a blade segment between 11 and 12 o'clock, and
between 2 and 5 o'clock, must only be performed by trained and experienced
operators, and then only at their own risk.
Easy cutting with almost no kickback is possible within a blade segment
between 8 and 11 o'clock.
Cutting Tools
Employ only the correct cutting tool for the job in hand.
MS-20U with cutter blade (Star Blade (4 teeth))
MS-20C with Nylon cutting head
For cutting thick materials, such as weed, high grass, bushes, shrubs,
underwood, thicket etc. (max. 2 cm dia. thickness). Perform this cutting work
by swinging the Brush cutter or Grass trimmer evenly in half-circles from right to
left (similar to using a scythe).
Maintenance instructions
– The condition of the cutter or trimmer, in particular of the cutting tool of the
protective devices and also of the shoulder strap must be checked before
commencing work. Particular attention is to be paid to the cutting blades
which must be correctly sharpened.
– Turn off the engine and remove spark plug connector when replacing or
sharpening cutting tools, and also when cleaning the cutter or cutting tool.
5
Caution:
Kickback
Diagrammatic
figure
Diagrammatic
figure