Operator's Manual

ManualsBrandsHusqvarna ManualsLawn Mower51

34 – English

TECHNICAL DATA

Engine

Cylinder volume, cu.in/cm

Cylinder bore, inch/mm

Stroke, inch/mm

Idle speed, rpm

Power, kW/ rpm

Ignition system

Manufacture

Type of ignition system

Spark plug

Electrode gap, inch/mm

Fuel and lubrication

system

Manufacturer

Carburetor type

Fuel capacity, US pint/litre

Oil pump capacity at

8 500 rpm, ml/min

Oil capacity, US pint/litre

Type of oil pump

Weight

Without bar and chain,

Lbs/kg

Chain/bar

Standard bar length,

inches/cm

Recommended bar

lengths, inches/cm

Usable cutting length

inches/cm

Chain speed at max.

power, m/sec

Pitch, inch/mm

Thickness of drive link,

inch/mm

Number of teeth on drive

sprocket

Recommended original and replacement bar

and chain combinations

Following is a list of recommended cutting equipment for

the Husqvarna chain saw models 51 and 55. The

combinations of power head, bar and chain have been

investigated in accordance with the kickback and vibration

requirements of ANSI B 175.1–1991.

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 protection.

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-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.

Guide bar Saw chain

Length Pitch Max nose

inch inch radius

13 0,325" 10T Husqvarna H30 or Oregon 95VP

15 0,325" 10T

16 0,325" 10T

18 0,325" 10T

15 0,325" 10T Husqvarna H21/H25/S24 or

16 0,325" 10T Oregon 21LP/21VB/34LG/34SL

18 0,325" 10T

20 0,325" 10T

18 0,325" 12T Husqvarna H21 or Oregon 21LP

20 0,325" 12T

16 3/8" 11T Husqvarna H42/S48 or

18 3/8" 11T Oregon 73VL/73LG/77SL

20 3/8" 11T

24 3/8" 11T

0,058"/1,5mm ––H25,H21 S24 21VB 34LG 34SL

0,050"/1,3mm H30 95VP ––20VB 33LG 33SL

0,058"/1,5mm H42 S48 73VL 73LG 77SL

0,050"/1,3mm ––72VL 72LG 76SL

Note: For the chains above you are free to choose between 0,050" and

0,058" gauge drive link for the corresponding bar, see the table below.

3,0/49

1,73/44

1,26/32

2 500

2,3/ 9 000

Electrolux

Champion

RCJ 7Y

0,020"/0,5

Zama

C1Q-EL7

0,6/1,27

0,3/0,63

Automatic

5,2/11,46

15"/38

13-24"/33-60

12-23"/30,5-58,5

17,4

0,325"/8,25

3/8" /9,52

0,050"/1,3

0,058"/1,5

3,1/50,9

1,77/45