Husqvarna 266 User Manual

4 (1)

©Husqvarna

Chain saw

model 266

TECHNICAL SPECIFICATION

 

 

Displacement . .

. . 66.7 cm3

Fuel tank capacity ___0.75 l

Bore..................

. . 50 mm

Stroke...............

. . 34 mm

Oil tank capacity .

. . . 0.45 l

Ignition advance

 

. . . .Sawing chain

. .3/8” pitch

.. . 25° before t.d.c. at 8500 rpm

. . . 15”

 

 

 

Sparking Plug . .

. . Champion CJ 7Y, PAL P8YGuide Bar...........

Electrode gap . .

. . 0.5 mm

Weight empty, incl. 15”

Carburettor . . . .

. . Diaphragm type

guide bar , chain .

. . . 7.0 kg (SE)

 

Tillotson HS 163 A

and chain brake .

. . . 7.4 kg (SG)

 

 

 

 

Operator’s manual

101 84 00-26 B

 

What is what on the chain saw?

1. Starter handle

7.

Throttle trigger

2.

Oil filler cap

8.

Front hand guard

3.

Starter

9.

Chain brake activator

4.

Adjusting screws.

10.

Choke

 

carburettor

11.

5. Fuel filler cap

12.

 

6. Ignition switch

13.

 

Assembiing guide bar and chain

A.Undo the guide bar nuts and remove the clutch cover and transport packing piece.

B.Place the guide bar into its rearmost position. Make sure that the chain tensioning stud is properly in the hole in the guide bar

C.Fit the chain around the drive sprocket and in the groove of the bar. Start on the upper side of the guide bar.

Make sure that the cutting edges of the sawing teeth along the top of the guide bar are facing towards the tip. Also check that the drive links go down properly into the drive sprocket.

D.Tension the chain so it does not sag along the bottom of the guide bar. Check that the chain and guide bar fit properly.

Fit the clutch cover and tighten the nut fingertight only.

Pull the chain a few turns around by hand and check that it can move freely.

E.Tension the chain while holding up the bar tip. Do not tension the chain stronger than it can be pulled around by hand.

Tighten the guide bar nuts.

NOTE!

Do not forget to “run in” the chain and guide bar. Please see the chain manufacturer’s recommendation.

CHECK THE CHAIN TENSION FREQUENTLY FOR OPTIMAL PERFORMANCE AND DURABIITY.

Fuei and oii

The power plant of this chain saw is a twostroke engine, that is run on a petroland oil mixture of certain proportions acc. to the table.

Do not use but a twostroke oil of high quality, e.g. Husqvarna Twostroke Oil, that is specially developed for chain saws.

NOTE!

No extra oil is needed in the petrol during the running-in period of the chain saw.

'For lubricating the chain and guide bar

.

we recommend a chain lubricating oil

 

with good adhesive properties.

 

During the wintertime at air temperatures

 

below 0°C (32°F) some types pf chain

 

lubricating oils are viscous. This can

 

cause overloading of the oil pump,

 

which can result in damage of the pump

 

drive and pump parts. Under cold

 

weather conditions it is therefore ne­

 

cessary to use a “wintergrade” oil which

 

stays fluent even when cold'.

 

Concerning the choice of oil and its suit­

 

ability at different air temperatures,

 

please refer to your Husqvarna dealer.

Always use quality chain oil. If not available use gear box oil type EP 90.

ALWAYS TOP UP WITH FUEL AND CHAIN LUBRICANT AT THE SAME TIME.

NOTE!

On no account waste oil should be used as this can damage the oil pump.

Oil mixture:

Husqvarna Twostroke Oil 1:50 (2%).

Ordinary twostroke oil 1:25 (4%)

Mixing table

 

2%

 

 

4%

 

 

 

 

 

 

 

 

 

Litres

Points

Litres

Petrol in

Petrol in

Litres

Petrol in

Petrol in

of oil

of oil

of petrol

Imp. gallon

US gallon

of petrol

Imp. gallon

US gallon

 

 

 

 

 

 

 

 

0.2

0.35

10

2.2

2.6

5

1.1

1.3

 

 

 

 

 

 

 

 

0.4

0.40

20

4.4

5.2

10

2.2

2.6

 

 

 

 

 

 

 

 

1.0

1.76

50

11.0

13.2

25

5.5

6.6

 

 

 

 

 

 

 

 

Chain brake activator “Swed-o-Matic” Maintenance of the chain brake

The Swed-o-Matic should release the chain brake at a certain load on the guide bar tip.

Adjusting the release power

The distance between the Swed-o-Matic release screw and the front handle (B) determines the release power. A smaller

gap means reduced release power.

The release power can be checked as follows: Push the guide bar tip against a spring balance. With a 15" guide bar the chain brake should be released at a load of 10-15 kp.

The forestry worker could make a rough check on the spot as follows: Hold the saw horizontally over a trunk, at a height of abt 35 cm. As the saw by force of its own weight swings around the rear handle and hits the trunk, the brake should be released.

Note that during this check the engine must not be running. If the brake is not released, contact your service workshop.

Nut M should be tightened completely.

Clean the brake band and the mechanism. Check that the band has at least 0.75 mm thickness on the most worn part.

Lubricate the links and supports of the brake mechanism with twostroke oil. Release and lock the brake repeatedly to check that the mechanism works smoothly.

Check the chain brake function regularly. Start the saw on clear ground making sure that the chain runs freely. Apply full throttle and release the chain brake. The chain should immediately stop rotating. If not, contact your service workshop.

hX

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