Husqvarna K 1260 Manual de instrucciones

HUSQVARNA CONSTRUCTION PRODUCTS

Workshop manual

K 1260

1. LITERATURE 3

2. MODELS 4

3. COMPONENTS – ORIENTATION 5

4. DISMANTLING INTO BASIC MODULES 6

5. STARTER 10

6. IGNITION SYSTEM 13

7. FLYWHEEL 16

8. AIR FILTER 18

9. INLET SYSTEM 19

10. FUEL SYSTEM 21

11. CARBURETTOR 24

12. DECOMPRESSION VALVE 29

13. CYLINDER/PISTON 30

14. CRANKCASE 36

15. CLUTCH 41

16. CUTTING HEAD 44

17. WET SYSTEM 49

18. HANDLE 50

19. TOOLS 53

CONTENTS Page

HUSQVARNA

K 1260

LITERATURE1

Workshop Manual

The Workshop Manual includes virtually

all workshop procedures that can come into

question on the K1260. Some very simple and

self-evident repairs have been omitted.

Outline

An introductory section with the title

“Dismantling into Basic Modules” shows how

the machine is dismantled into large component

units, for example, the starter, cutting arm, air

filter, etc.

The manual goes on to describes in detail

through the different chapter how work on the

basic modules should be carried out.

This arrangement means that as a mechanic,

at least until you have learnt the basic composi-

tion of the machine, you need to start with the

chapter “Dismantling into Basic Modules” to

then move on to the chapter covering the

specific service work.

Layout – pictures and text

Besides the pictures and illustrations there is

generally two columns of text. The left-hand text

column is a concise and is suitable for experienced

mechanics, the right-hand column gives a more

detailed description and is targeted at mechanics

with less experience of repair work on the power

cutter.

Contents

The manual is divided into numbered chapters

together with chapter headings that are stated in

bold at the top of each page.

The list of contents also has page references to

the start of each chapter.

Spares

Spares K1260

The folder includes all spare parts for

Husqvarna K1260 and the special model

K1260 Rail.

The folder contains complete exploded

drawings for the whole machine where the

location, spares number and appearance of each

component is easy to identify.

HUSQVARNA CONSTRUCTION PRODUCTS

Workshop manual

K 1260

IPL, K1260, K1260 RAIL, 2010-05, 576 13 90-01

K1260

K1260 RAIL

Reservdelar

Spare parts

Ersatzteile

Pieces de rechange

Piezas de repuesto

Ricambi

Peças sobresselente

576 13 90-01

“Dismantling into Basic Modules”

“Cutting head” (Example)

MODELS

K1260

This is the basic model of the K1260 and is

available for blade diameters 14 ˝ (350 mm)

and 16 ˝ (400 mm). The machines are com-

pletely identical except for the blade guard

size.

K1260 Rail

This is a special version of K1260, which is

designed for track cutting, together with the

fixture RA10.

K1260 Rail has a custom front bearing

housing with connection for the track cutting

fixture. The blade guard is chrome plated to

withstand high temperatures. The blade guard

has no kit for wet cutting.

The Rail version is also available for blade

diameters 14˝ (350 mm) and 16˝ (400 mm).

The blade guard, belt pulleys and front belt

guard are different for the 14 and 16 inch

versions.

RA10

K1260

K1260 Rail

COMPONENTS – ORIENTATION3

Components

1. Cutting blade

2. Blade guard

3. Adjustment handle for the blade

guard

4. Front handle

5. Air filter cover

6. Cylinder cover

7. Filler cap

8. Starter handle

9. Starter

879

10. Tool bracket with combination

wrench

11. Front belt guard

12. Belt adjuster screw

13. Locking screws for belt adjustment

14. Rear belt guard

15. Throttle

16. Rear handle

17. Throttle lock

18. Decompression valve

19. Water valve

20. Water connection

21. Choke

22. Fuel tank

23. Starter throttle lock

24. Stop switch

Basic modules

This chapter shows how the machine is

built up of basic modules, for example,

the starter, carburettor, air filter system,

etc.

The purpose is to illustrate how you

can easily and effectively dismantle and

assemble the machine in its basic modules.

Service work on a component level, for

example, replacing the starter cord, is

described in detail in respective chapters.

Cutting head

1. Loosen the screws to the cutting head.

2. Loosen the tension of the belt with the

adjuster screw. Remove the screws to the

cutting head.

3. Detach the hose clip.

4. Remove the front belt guard by

pushing it forward.

5. Lift off the belt from the belt pulley

and remove the cutting head.

6. Remove the rear belt guard bolts.

7. Lift off the guard.

At this stage, the belt can be replaced.

DISMANTLING INTO BASIC MODULES 4

Starter

1. Loosen the cover's 4 screws.

2. Remove the starter.

12 3

DISMANTLING INTO BASIC MODULES

Air filter

1. Loosen the guard's three screws and

remove the guard.

2. Unscrew the filter's centre screw.

Cutting arm

1. Remove the nut and the three screws.

2. Lift off the cutting arm. Check when

reassembling that the two pipe guides are

in place.

3. Carefully lift up the paper filter so

that dust does not fall into the carbu-

rettor inlet.

Cylinder cover

1. Loosen the cylinder cover's five screws.

2. Lift off the cylinder cover.

Carburettor

1. Loosen the two screws at the inlet

elbow.

2. Unscrew the screws to release the

carburettor.

3. Turn the carburettor and remove the

choke and fuel hose.

4. Loosen the wire nipple on the opposite

side.

5. Note the channel and corresponding

holes in the gasket. This is the pressure

relief channel for the filter compensation

(SmartCarb).

345

DISMANTLING INTO BASIC MODULES 4

Air line

Remove the entire air filter unit, cylinder

cover and the starter.

Note how the cable to the stop switch

and ignition cable are fitted in the air

line.

Disconnect the ignition cable at the

spark plug and release the cable from the

air line.

Loosen the cable lug at the ignition

module. Remove the air line.

Centrifugal nozzle

The flywheel must first be taken out to

remove the nozzle. This is described on

page 16.

Remove the screw and take off the

nozzle.

Inlet pipe

The connection between the carburettor

and the cylinder is flexible. Vibrations

and heat transfer to the carburettor are

minimised.

1. The rubber pipe is pushed onto the

plastic frame which also serves as a hol-

der of the throttle wire. Note the impulse

channel in the rubber pipe, bottom left,

which connects the crankcase to the car-

burettor pump diaphragm.

Dismantling

2. Press the rubber pipe together and pull

out the plastic frame.

3. Remove the two screws to the cylinder

and remove the inlet pipe.

4. Examine the components for dust leaks.

Assembly

Be extremely careful when fitting the

plastic collar on the rubber pipe to avoid

leaks.

Muffler

Remove the cutting head, cutting arm,

air filter and cylinder cover.

The muffler is secured with three

screws. Remove these and take off the

muffler.

Assembly

The insulating fibre gasket must be placed

between the muffler and heat shield.

The heat shield must be next to the

cylinder, without gasket.

DISMANTLING INTO BASIC MODULES4

Anti-vibration

Several service work operations can be facilitated by dividing the machine at

the anti-vibration elements. The following must be done before dividing:

– remove the air filter unit and cylinder cover

– remove the starter

– loosen the cable lug at the ignition module and detach the air line

– pull the fuel lines from the carburettor

– remove the throttle wire at the carburettor

The engine unit is attached to the handle unit at five points with anti-

vibration elements in the form of springs an rubber dampers. A movement

limiter must also be removed.

502 50 66-02

Dividing the machine

Remove the vibration dampers' outer

screws:

1. Above the filler cap

2. Next to the handle frame

Measures for replacement: Detach the

fuel hose and the throttle wire at the car-

burettor. Remove the outer screws at

dampers 3 and 5, and movement limiter

6. The machine body can then be tilted

forwards. Remove the springs using the

Allen key 4 mm.

3. Below the flywheel

4. Above the ground support

5. Next to the cylinder

6. Remove the screw

Measures for replacement: To replace the

spring 4 and dampers 3 and 5, the outer

screws 1 and 2 must first be removed.

Now remove the outer screws to dampers

3 and 5, and spring 4. Also remove the

movement limiter 6. The machine body

can then be separated from the handle

unit and dampers making the spring

accessible.

To remove the rubber dampers from

the machine body you need the special

tool 502 50 66-02. The U-key is pressed

into the slot of the internal metal washer

and the dampers are unscrewed using the

U-key.

Spring 4 is removed with a Torx

wrench.

–2011-05 2011-05–

4 mm 4 mm

STARTER 5

Replacing the starter cord

Dismantle the starter.

Eliminate the spring force from

the return spring

1. Pull out the starter cord approximately

12 in./30 cm. Hold the starter pulley

with your thumb and place the cord in

the cut-out on the starter pulley.

2. Let the starter pulley rotate slowly and

wind up the cord on the metal sleeve.

3. Lift off the cord from the starter

pulley.

Attach the new starter cord

The starter cord should be 45 in./

115 cm long and have a diameter of

.16 in./4 mm.

1. Insert one end of the cord from the

top through the hole in the starter pulley

and then out through the notch for the

cord. Pull out virtually the whole cord

length until sufficient cord remains to tie

a knot as illustrated.

2. Insert the other end through the cover

and on through the handle. Tie a double

knot as illustrated.

Loading the return spring

1. Fit the starter cord in the cut-out.

2. Wind the starter cord 4 turns around

the hub.

3. Pull out the starter handle so the cord

rolls off the hub.

4. Release so the cord is wound on the

starter pulley.

Repeat the procedure with 3 turns of

cord around the hub.

Important check!

Check that the return spring does not act

as an end stop by extending the cord

fully. In this position it should be possible

to turn the starter pulley a least a further

half turn before the spring stops the

movement.

2 3

1 2

3 4

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