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12 – 

English

SETTINGS AND ADJUSTMENTS

Drive

On account of the machine’s unique design the driving power 
is not transferred at the centre of the blade. The flanges on the 
two guide rollers run in the blade’s groove. Springs on the 
guide rollers press out the rollers, which in turn press the V-
shaped edge on the inside diameter of the blade against the 
V-shaped groove in the drive wheel. The drive wheel is fitted 
on an axle which is driven by the engine via a drive belt. This 
allows a total cutting depth of 260 mm (10 inches) with a 350 
mm (14 inches) diamond blade.

1

Blade

2

Support rollers

3

Drive wheel

4

Guide rollers

5

V-shaped edge

Checking wear

As the blade is used the inside diameter and the groove in the 
drive wheel become worn.

The ring cutter will also work well in the future if:

the drive wheel is not too worn

A) New

B) Worn

the guide rollers are not too worn

A) New

B) Worn

adjustment between the rollers and blade is correct.

The roller setting should be checked twice during the life of 
the diamond blade, once after fitting the blade and when the 
blade is semi worn.

Fitting the blade

We offers a number of blades for different materials in its 
range. Check with your Husqvarna dealer to see which blades 
are best suited for your usage.

Wipe off any dirt from the surface of the blade.

Loosen the locking nuts on the support roller cover.

Unscrew the adjuster screws a few turns.

Loosen the knob to offload the springs.

Remove the four screws holding the support roller guard 
using a 6 mm hex key and lift off the cover.

!

WARNING! It is forbidden to reconstruct a 
used blade. A used blade may be weakened. 
A reconstructed blade can crack or break 
into pieces and seriously injury the operator 
or other persons.

!

WARNING! Check that the blade is not 
damaged before fitting it on the machine. 
Damaged blades can disintegrate and cause 
serious personal injury.

Summary of Contents for K950 RING

Page 1: ...E E E En n n ng g g gl l l li i i is s s sh h h h K950 Ring Operator s manual Please read the operator s manual carefully and make sure you understand the instructions before using the machine ...

Page 2: ...l fumes and exhaust fumes Always provide for good ventilation WARNING Sparks from the cutting blade can cause fire in combustible materials such as petrol gas wood dry grass etc Noise emission to the environment according to the European Community s Directive The machine s emission is specified in chapter Technical data and on label Switch off the engine by moving the stop switch to the STOP posit...

Page 3: ...oller 14 Assembling the complete guide roller 14 Important notes 15 Replacing the drive wheel 15 Replacing the support rollers guide rollers 15 Water hose 15 FUEL HANDLING Fuel 16 Mixing ratio 16 Fuelling 16 STARTING AND STOPPING Starting and stopping 17 MAINTENANCE Lubricating the guide rollers 18 Adjusting the drive belt 18 Belt tensioning replacing the drive belt 18 Belt pulley and clutch 18 Ca...

Page 4: ... Cover screws 8 Decompression valve 9 Air filter cover 10 Starter handle 11 Throttle lockout 12 Throttle control 13 Adjuster screws 14 Guide rollers 15 Support rollers 16 Drive wheel 17 Locking nuts for the support rollers 18 Water adjustment control 19 Warning decal 20 Choke 21 Start throttle lock 22 Stop switch 23 Rating plate 24 Fuel tank 25 Tool bag 26 Bearing grease 27 Combination spanner 28 ...

Page 5: ...commended for the material to be cut Boots with steel toe caps and non slip sole Always have a first aid kit nearby WARNING Under no circumstances may the design of the machine be modified without the permission of the manufacturer Always use genuine accessories Non authorized modifications and or accessories can result in serious personal injury or the death of the operator or others WARNING Use ...

Page 6: ...dle the throttle control and the throttle lockout both move back to their original positions This movement is controlled by two independent return springs This arrangement means that the throttle control is automatically locked at the idle setting Blade guard This guard is fitted above the blade and is designed to prevent parts of the blade or cutting fragments from being thrown towards the user W...

Page 7: ...eturns to its original position when you release it Check that the throttle control and throttle lockout move freely and that the return springs work properly Start the power cutter and apply full throttle Release the throttle control and check that the cutting blade stops and remains stationary If the cutting blade rotates when the throttle is in the idle position you should check the carburettor...

Page 8: ...he machine while the engine is running Make sure there is plenty of ventilation when refuelling or mixing fuel petrol and 2 stroke oil Move the machine at least 3 m from the refuelling point before starting it Never start the machine If you have spilt fuel on it Wipe off the spillage and allow remaining fuel to evaporate If you have spilt fuel on yourself or your clothes change your clothes Wash a...

Page 9: ...ibed below is of a general character Support the work piece in such a way that it is possible to predict what will happen and so that the cut remains open while cutting Check that the blade is not in contact with anything when the machine is started Always cut at maximum speed Start cutting smoothly allowing the machine to work without forcing or pressing in the blade Move the blade slowly backwar...

Page 10: ...sequence First make the lower horizontal cut Now make the two vertical cuts Finish with the upper horizontal cut Remember to divide the blocks up into manageable pieces so that they can be transported and lifted safely CAUTION If the upper horizontal cut is made before the lower horizontal cut the work piece will fall on the blade and jam it How to avoid kickback What is kickback The word kickback...

Page 11: ...utting in a soft material such as sandstone or brick Diamond blades are available in several hardness classes A soft diamond blade has a relatively short service life and large cutting capacity It is used for hard materials such as granite and hard concrete A hard diamond blade has a longer service life and reduced cutting capacity and should be used for soft materials such as brick and asphalt Di...

Page 12: ... B Worn the guide rollers are not too worn A New B Worn adjustment between the rollers and blade is correct The roller setting should be checked twice during the life of the diamond blade once after fitting the blade and when the blade is semi worn Fitting the blade We offers a number of blades for different materials in its range Check with your Husqvarna dealer to see which blades are best suite...

Page 13: ...de and make sure that the support rollers are not clamped against the blade Adjust the adjuster screws so that the support rollers make contact against the blade Adjust so you can easily stop the support rollers using your thumb when the blade is rotated The support rollers should only follow the blade occasionally Tighten the locking nuts on the support roller guard Rotate the blade and make sure...

Page 14: ...oosen the guide roller you need to continue turning the knob until it loosens completely The guide roller can now be pulled out of the chassis Assembling the complete guide roller Screw the knob until it bottoms and then loosen the knob 2 turns Insert the guide roller in the chassis Now press the guide roller into the knob Lubricate the guide roller s sleeve using grease Fit the grease gun on the ...

Page 15: ...ically shortens the life of the drive wheel Replacing the support rollers guide rollers Remove the support roller cover Check the rollers for wear Use a 19 mm spanner and 5 mm hex key to replace the rollers Lubricate using bearing grease inside the rollers before the new rollers are fitted Replace the guide rollers when half of the flange on the rollers is worn A New B Worn Replace the support rol...

Page 16: ...ys start by filling half the amount of the petrol to be used Then add the entire amount of oil Mix shake the fuel mixture Add the remaining amount of petrol Mix shake the fuel mixture thoroughly before filling the machine s fuel tank Do not mix more than one month s supply of fuel at a time If the machine is not used for some time the fuel tank should be emptied and cleaned Fuelling Keep the handl...

Page 17: ...section of the rear handle pressing the machine against the ground Never twist the starter cord around your hand Grip the starter handle slowly pull out the cord with your right hand until you feel some resistance the starter pawls grip now quickly and powerfully pull the cord CAUTION Do not pull the starter cord all the way out and do not let go of the starter handle when the cord is fully extend...

Page 18: ...TION Make sure that both belt pulleys are clean and undamaged before a new drive belt is fitted Press on the belt tensioner with your thumb to tension the belt Now tighten the screw holding the belt tensioner Fit the belt cover Belt pulley and clutch Never start the engine when the belt pulley and clutch are removed for maintenance Carburettor Your Husqvarna product has been designed and manufactu...

Page 19: ...ays be replaced Cleaning the foam plastic filter The foam plastic filter is easily accessible under the filter cover A This filter should be checked weekly and replaced if necessary In order to obtain a good filtering effect the filter must be replaced regularly or cleaned and oiled A special HUSQVARNA oil has been produced for this purpose Remove the foam plastic filter Wash the filter well in te...

Page 20: ... once more but this time with four turns Note that the starter handle is drawn to its correct home position after tensioning the spring Check that the spring is not drawn to its end position by pulling out the starter line fully Slow the starter pulley with your thumb and check that you can turn the pulley at least a further half turn Tensioning the recoil spring Hook the starter cord in the notch...

Page 21: ...ure too much oil A dirty air filter These factors cause deposits on the spark plug electrodes which may result in operating problems and starting difficulties If the machine is low on power difficult to start or runs poorly at idle speed always check the spark plug first before taking any further action If the spark plug is dirty clean it and check that the electrode gap is 0 5 mm The spark plug s...

Page 22: ... the drive wheel is driven on the inner diameter of the blade so that both the surfaces of the drive wheel and the blade are exposed to wear The core of the blade becomes thinner and the guide wider which prevents the blade being driven by the wheel Secondly the blade is exposed to loads from the rollers and from the actual cutting process when the blade is not held completely straight Strain buil...

Page 23: ...e outside of the starter unit s air intake 8 Check that nuts and screws are tight 9 Check that the stop switch works correctly Weekly maintenance 10 Check clean or replace the main filter 11 Check the tension of the drive belt 12 Clean the spark plug Check that the electrode gap is 0 5 mm 13 Clean the fins on the flywheel Check the starter and the recoil spring 14 Clean the cooling fins on the cyl...

Page 24: ...k plug NGK BPMR 7A Electrode gap mm 0 5 Fuel and lubrication system Manufacturer of carburettor Tillotson Carburettor type HS 282A Fuel tank capacity litre 1 0 Weight Power cutter without fuel and blade kg 13 1 Noise emissions see note 1 Sound power level measured dB A 117 Sound power level guaranteed LWA dB A 118 Sound levels see note 2 Equivalent sound pressure level at the operator s ear measur...

Page 25: ...warps 1 Rollers tensioned too much 2 Blade overheating Segments break 1 Bent twisted or badly maintained blade 2 Continue to use the blade only if one segment is missing or leave for reconstruction when the blade is worn max 50 The blade cuts too slowly 1 Wrong blade for the material in question The blade slips 1 The guide rollers does not move in and out freely A seized roller can not press the b...

Page 26: ...8 37 EC annex IIA of May 3 1989 relating to electromagnetic compatibility 89 336 EEC and applicable supplements of May 8 2000 relating to the noise emissions in the environment 2000 14 EC Conformity assessment according to Annex V For information relating to noise emissions see the chapter Technical data The following standards have been applied SS EN ISO 12100 2003 EN ISO 55012 2002 EN 1454 ISO 1...

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