Husqvarna 261 manual Technical Data

Page 34

TECHNICAL DATA

 

261

Engine

 

Cylinder volume, cu.in/cm3

3,7/61,5

Cylinder bore, inch/mm

1,89/48

Stroke, inch/mm

1,34/34

Idle speed, rpm

2 700

Power, kW/ rpm

2,9/ 9 600

Ignition system

 

Manufacture

Electrolux

Type of ignition system

ET

Spark plug

Champion RCJ 7Y

Electrode gap, inch/mm

0,020/0,5

Fuel and lubrication

 

system

 

Manufacturer

Walbro

Carburetor type

HDA144

Fuel capacity, US pint/litre

1,2/0,6

Oil pump capacity at

 

8 500 rpm, ml/min

6,5-13,5

Oil capacity, US pint/litre

0,6/0,3

Type of oil pump

Automatic

Weight

 

Without bar and chain, Lbs/kg

12,7/5,8

Chain/bar

 

Recommended bar lengths,

 

inches/cm

13-20"/33-51

Usable cutting length

 

inches/cm

12-19"/30-49

Chain speed at max.

 

power, m/sec

18,5

Pitch, inches

0,325"/ 3/8"

Thickness of drive link,

0,058"/1,5 and 0,050"/1,3

inch/mm

Number of teeth on drive

7

sprocket

Recommended original and replacement bar and chain combinations

Following is a list of recommended cutting equipment for the Husqvarna chain saw model 261. 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 B 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

18

0,325"

10T

 

20

0,325"

10T

 

 

 

 

 

16

3/8"

11T

Husqvarna H42/S48 or

18

3/8"

11T

Oregon 73L/73VL/73LG

20

3/8"

11T

 

24

3/8"

11T

 

 

 

 

 

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.

0,058"/1,5mm

H25,H21

 

S24

 

21VB

21LP

34LG

 

 

 

 

 

 

 

 

 

 

 

 

0,050"/1,3mm

H30

95VP

 

 

20VB

20LP

33LG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0,058"/1,5mm

H42

S48

73L

 

73VL

73LG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0,050"/1,3mm

72L

 

72VL

72LG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

34«*3®G¦5(¬

– English

Image 34
Contents 261 101 90KEY to Symbols SymbolsContents Chain SAW Safety Equipment Safety InstructionsPersonal Protective Equipment Chain brake and front hand guard Chain catcher Throttle lockRight hand guard Vibration damping system Stop switchMuffler Checking the inertia brake release Checking brake band wearChecking the front hand guard Checking the brake triggerThrottle lock Cutting Equipment 5 basic rulesSaw chain Cutting equipment designed to minimise kickbackBar Some terms that describe the bar and chainGeneral information on sharpening cutting teeth Sharpening your chain and adjusting raker clearanceSharpening cutting teeth Setting the raker clearance General advice on setting raker clearanceTensioning the chain Chain oil Lubricating cutting equipmentFilling with chain oil Checking wear on cutting equipment Checking chain lubricationLubricating the clutch drum bearing Lubricating the bar tip sprocketHOW to Avoid Kickback What is kickback?General rules Do not let go of the handlesMin m General Safety Precautions10 ft Basic safety rules General Working InstructionsTerms Basic cutting techniqueGeneral CuttingLimbing Tree felling techniqueSafe distance Felling directionClearing the trunk and preparing your retreat FellingFreeing a Trapped tree Freeing a tree that has fallen badly = high accident riskCutting the trunk into logs Cutting trees and branches that are in tension PreparationsWhat is WHAT? Assembly Mounting guide bar and chainFuel Handling FuelmixMin 3 m Fuelling10ft Cold engine Start and StopStart Warm engineMaintenance CarburetorChanging a broken or worn starter cord Starter device assemblyStarter device Tensioning the recoil springAir filter Adjustment of the oil pumpNeedle bearing maintenance MufflerTemperature -5oC 23oF or colder Centrifugal cleaning Air InjectionTemperature 0oC 32oF or colder Cooling systemWeekly maintenance Daily maintenance Monthly maintenanceTechnical Data 261Federal Emission Control Warranty Statement Your Warranty Rights Obligations1998W48

261 specifications

The Husqvarna 261 is a robust and versatile chainsaw designed for professional use, particularly appealing to forestry workers, and those engaged in tree care and maintenance. This model stands out for its balance of power and lightweight design, making it an excellent choice for those who need a reliable tool for extended use.

One of the standout features of the Husqvarna 261 is its efficient 50.1cc engine, which delivers impressive cutting performance while maintaining low fuel consumption. This model incorporates a X-Torq engine technology that reduces emissions, making it an environmentally friendly option that complies with stringent regulations. Users can benefit from increased torque over a wide RPM range, resulting in optimal cutting performance even in tough conditions.

Another significant characteristic of the Husqvarna 261 is its LowVib technology. This system effectively reduces vibrations, allowing operators to work longer with minimal fatigue. The ergonomic design of the chainsaw, combined with a comfortable grip, further enhances user control and reduces strain during operation.

Safety is a priority in the design of the Husqvarna 261. It is equipped with an inertia chain brake that stops the chain immediately in case of kickback, protecting the user from potential injury. The chainsaw also features an adjustable oil pump, allowing for precise lubrication of the chain according to the user's specific needs, thus prolonging the life of both the chain and the guide bar.

The air filtration system is another key feature that sets the Husqvarna 261 apart. The innovative design includes a three-piece air filter that effectively keeps dust and debris from entering the engine, ensuring long-lasting performance and reduced maintenance. Furthermore, the quick-release cover allows for easy access to the air filter and spark plug, simplifying routine maintenance tasks.

Overall, the Husqvarna 261 combines advanced technology with user-friendly features, making it a standout choice for professionals who require reliability and performance. Its robust design, coupled with safety features and efficient engine technology, ensures that it can handle the demanding tasks across various cutting applications, establishing it as a preferred tool in the chainsaw market. Whether for logging, landscaping, or general tree work, the Husqvarna 261 is engineered to meet and exceed the expectations of discerning users.