Stihl OILOMATIC Manual page 24

TM TM
3.10.6 PICCO Micro
Reduced kickback, low vibration,
low profile semi-chisel chain
Cutter
Particularly flat and slim for very
narrow kerf – minimizes power
required to drive the chain.
Depth gauge
Forward projecting.
Function/Construction
TM
1/4" PICCO pitch and
TM
3/8" PICCO pitch.
Additional humped drive link as on
PMC3.
Reduced vibrations as with
TM TM
PICCO Micro .
Applications
Special chain for chainsaws up to
about 1.0 kW and pole saws up to
about 1.5 kW.
Maintenance
Resharpening is accomplished with
a round file with file holder or
electric chain grinder.
Color code
green
Chain type
1/4" P .325" 3/8" 3/8"P
.043" 3670
Chain and Bar Manual
3 (PM3) 3.11 Reduced Kickback
Chains
One of the most dangerous
situations during cutting with a
chainsaw is kickback.
Kickback occurs when the chain at
the upper quadrant of the bar nose
contacts wood or other solid object,
e.g. another branch during limbing
or when the chain at the bar nose is
briefly pinched in the cut.
Particularly low kickback saw
chains with humped drive links have
been developed to minimize this
danger. These features go beyond
the kickback reducing measures
found on 'normal' saw chains.
The humped drive link is installed in
front of each cutter in place of a
conventional drive link.
This chain guides the cutter more
smoothly into the wood. Low
kickback chains should be used for
applications in which cutting is
performed primarily with the bar
nose (e.g. tree surgery). The use of
low kickback chains can help
reduce the risk of kickback injury for
inexperienced and occasional
chainsaw users in particular.
Saw chains with a particularly low
kickback tendency have the digit 3
in their designation, e.g. 36 RS3,
26 RM3, 63 PM3, 63 PS3.
3.12 How the OILOMATIC
Chain Operates
The method of operation of every
®
OILOMATIC chain can be
compared to that of a portable
woodworking plane.
The top plate of the cutter being the
plane iron and the depth gauge
performing the function of the
plane's sole.
The efficiency of the saw chain
depends on:
– The driving power and torque of
the saw engine.
– The feed force applied by the saw
operator.
– The shape, condition and
number of cutters, including
depth gauges.
The cutters are the parts of the
chain which do the actual work, their
shape and condition having a
decisive influence on cutting
performance.
3.13 Comfort Saw Chains
These chains can be identified by
the letter "C" marked on every
cutter.
®
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