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TECHNICAL DATA
Recommended original and replacement bar and chain combinations
Following is a list of recommended cutting equipment for the Jonsered chain saw model 2156 and 2159.
The combinations of power head, bar and chain have been investigated in accordance with the kickback and vibration requirements
of ANSI B 175.1–2000.
The guide bar nose radius is determined by either the maximum number of teeth in the nose sprocket or the corresponding
maximum nose radius of a solid bar.
The following list is the chain saw manufacturers recommendations. There may be other combinations available, which will also
achieve kickback reduction.
As we are listing the maximum guide bar nose radius, you may use a guide bar with smaller nose radius than in our list. For guide
bars of the same length, all sprocket-nose guide bars of the same pitch and having the same number of sprocket teeth may be
considered to have equivalent kickback energy. A hard nose bar having the same length and nose radius as a sprocket-nose bar
may be considered to have equivalent or less kickback energy than the sprocket-nose bar.
Low kickback saw chain is a chain which has only met the kickback performance requirements of ANSI B 175.1 safety requirements
for gasoline powered chain saws when tested on the representative sample of chain saws below 3.8 cu. in. specified in ANSI 175.1.
We recommend that you as a replacement use the listed chains or "Low kickback saw chains" which are available at your dealer.
Note: For the chains above you are free to choose between 0,050", 0,058" and 0,063" gauge drive link for the corresponding bar,
see the table below.
Bar
Chain
Length,
inches
Pitch, inch
Max nose
radius
13 0,325" 10T Jonsered S25 or Oregon 20/21/22BP
15 0,325" 10T
16 0,325" 10T
18 0,325" 10T
15 3/8" 11T Jonsered S42 or Oregon 72/73/75LP
16 3/8" 11T
18 3/8" 11T
20 3/8" 11T
0,050"/1,3 mm 20BP 72LP
0,058"/1,5mm S25/21BP S42/73LP
0,063"/1,6 mm 22BP 75LP
D
2
L
_
D
PITCH =