Jonsered CS 2138 User Manual

11
S Roll the log over and finish with a second
overcut.
S Give special attention to logs under strain
to prevent the saw from pinching. Make
the first cut on the pressure side to relieve
the stress on the log.
BUCKING USING A LOG OR SUP-
PORT STAND
S Remember your first cut is always on the
pressure side of the log.
S Your first cut should extend
1/3 of the
diameter of the log.
S Finish with your second cut.
1
st
Cut
2
nd
Cut
Usingalogforsupport
2
nd
Cut
1
st
Cut
1
st
Cut
2
nd
Cut
Using a support stand
1
st
Cut
2
nd
Cut
LIMBING AN D PRUNING
WARNING: Be alert for and guard
against kickback. Do not allow the moving
chain to contact any other branched or objects
at the nose of the guide bar when limbing or
pruning. Allowing such contact can result in
serious injury .
WARNING: Neverclimbintoatreeto
limb or prune. Do not stand on ladders, plat-
forms, a log, or in any position which can cause
you to lose your balance or control of the saw .
IMPORTANT POINTS
S Watch out for springpoles. Use extreme
caution when cutting small size limbs. Slen-
der material may catch the saw chain and be
whipped toward you or pull you off balance.
S Be alert for springback. Watch out for
branches that are bent or under pressure.
Avoid being struck by the branch or the
saw when the tension in the wood fibers is
released.
S Keep a clear work area. Frequently clear
branches out of the way to avoid tripping
over them.
LIMBING
S Always limb a tree after it is cut down. Only
then can limbing be done safely and prop-
erly.
S Leave the larger limbs underneath the
felled tree to support the tree as you work.
S Start at base of the felled tree and work to-
ward the top, cutting branches and limbs.
Remove small limbs with one cut.
S Keep the tree between you and the chain
as much as possible.
S Remove larger, supporting branches with
the cutting techniques described in BUCK-
ING WITHOUT A SUPPORT.
S Always use an overcut to cut small and
freely hanging limbs. Undercutting could
cause limbs to fall and pinch saw.
PRUNING
WARNING: Limit pruning to limbs
shoulder height or below . Do not cut if
branches are higher than your shoulder. Get
a professional to do the job.
S Make your fist cut
1/3 of the way through
the bottom of the limb.
S Next make a 2nd cut all the way through
the limb. Then cut a third overcut leaving
a 1 to 2 inch collar from the trunk of the tree.
First cut
Second cut
Third cut
Collar
Pruning technique

Jonsered CS 2138 Specifications

Engine Specifications

cylinder volume	42 cm3
stroke	32 mm
idle speed	3000 rpm
recommended max speed, unloaded	13000 rpm
power	1.8 kW

Noise Levels

noise pressure level at operator’s ear	101 dB(A)
noise power level	95 dB(A)

Vibration Levels

front handle vibration level	5.5 m/s2
rear handle vibration level	8.5 m/s2

Fuel and Lubrication System

fuel capacity	0.38 litre
oil pump capacity at 8500 rpm	4 - 8 ml/min
oil capacity	0.2 litre

Chain/Bar Specifications

standard bar length	14/36 in/cm
recommended bar lengths	14/36 16/41 in/cm
usable cutting length	13.5/35 15.5/40 in/cm

Weight and Dimensions

weight without bar and chain	4.7 kg
pitch	0.375 inches
thickness of drive link	1.27 mm