Jonsered CS 2138 User Manual

8
IMPORTANT
Experience indicates that alcohol blended fuels
(called gasohol or using ethanol or methanol)
can attract moisture which leads to separation
and formation of acids during storage. Acidic
gas can damage the fuel system of an engine
while in storage. To avoid engine problems,
empty the fuel system before storage for 30
days or longer . Drain the gas tank, start the en-
gine and let it run until the fuel lines and carbu-
retor are empty. Use fresh fuel next season.
Never use engine or carburetor cleaner prod-
ucts in the fuel tank or permanent damage may
occur .
CHAIN BRAKE
Ensure chain brake is disengaged by pulling
the front hand guard back toward the front han-
dle as far as possible. The chain brake must
be disengaged before cutting with the saw .
WARNING: The chain must not
move when the engine runs at idle speed. If
the chain moves at idle speed refer to CAR-
BURETOR ADJUSTMENT within this
manual. Avoid contact with the muffler. A hot
muffler can cause serious burns.
To stop the engine, move the ON/STOP
switch to the STOP position.
To start the engine, hold the saw firmly on
the ground as illustrated below. Make sure
the chain is free to turn without contacting
any object.
Hold saw firmly while pulling starter rope.
Use only 15″ --- 1 8 ″ of rope per pull.
IMPORTANT POINTS TO REMEMBER
When pulling the starter rope, do not use the full
extent of the rope as this can cause the rope to
break. Do not let starter rope snap back. Hold
the handle and let the rope rewind slowly .
For cold weather starting, start the unit at full
choke; allow the engine to warm up before
squeezing the throttle trigger.
NOTE: Do not cut material with the choke/fast
idle lever at the FULL CHOKE position.
STARTING A COLD ENGINE (or a
warm engine after running out of
fuel)
NOTE
: In the following steps, when the cho-
ke/fast idle lever is pulled out to the full ex-
tent, the correct throttle setting for starting is
set automatically.
ON/STOP SWITCH
ON
STOP
(SIDE VIEW)
1. Move ON/STOP switch to the ON posi-
tion.
2. Pull out choke/fast idle to the full extent
(to the FULL CHOKE position).
3. Slowly press primer bulb 6 times.
4. Pull the starter rope sharply 5 times with
your right hand. Then, proceed to the
next step.
NOTE: If the engine sounds as if it is trying
to start before the 5th pull, stop pulling and
immediately proceed to the next step.
5. Push the choke/fast idle lever in to the
HALF CHOKE position.
OFF HALF
CHOKE/FAST IDLE LEVER
Choke/
fast idle lever
(SIDE VIEW)
FULL
6. Pull the starter rope sharply with your
right hand until the engine starts.
7. Allow the engine to run for approximately
30 seconds. Then, squeeze and release
throttle trigger to allow engine to return to
idle speed.
STARTING A WARM ENGINE
1. Move ON/STOP switch to the ON posi-
tion.
2. Pull the choke/fast idle lever out to the
HALF CHOKE position.
3. Slowly press the primer bulb 6 times.
4. Pull the starter rope sharply with your
right hand until the engine starts.
5. Squeeze and release throttle trigger to
allow engine to return to idle speed.
DIFFICULT STARTING (or starting a
flooded engine)
The engine may be flooded with too much
fuel if it has not started after 10 pulls.
Flooded engines can be cleared of excess
fuel by pushing the choke/fast idle lever in
completely (to the OFF CHOKE position)
and then following the warm engine starting
procedure listed above. Ensure the ON/
STOP switch is in the ON position.
Starting could require pulling the starter rope
handle many times depending on how badly
the unit is flooded. If engine fails to start, re-
fer to the TROUBLESHOOTING TABLE.
CHAIN BRAKE
WARNING: If the brake band is worn
too thin it may break when the chain brake is
triggered. With a broken brake band, the
chain brake will not stop the chain. The chain
brake should be replaced by an authorized
service dealer if any part is worn to less than
0,02″ (0,5 mm) thick. Repairs on a chain
brake should be made by an authorized ser-
vice dealer. Take your unit to the place of pur-
chase if purchased from a servicing dealer,
or to the nearest authorized master service
dealer.
S This saw is equipped with a chain brake.
The brake is designed to stop the chain if
kickback occurs.

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