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English

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ASSEMBLY

Checking the drive axle and flange 
washers

Check that the threads on the drive shaft are undamaged.

Check that the contact surfaces on the blade and the flange 
washers are undamaged, of the correct dimension, clean, 
and that they run properly on the drive axle.

Do not use warped, notched, indented or dirty flange 
washers. Do not use different dimensions of flange washers.

Fitting the cutting blade

Husqvarna’s blades are approved for hand-held power 
cutters. Blades are manufactured with three different 
diameters of centre holes: 20 mm (0.787"), 22.2 mm (7/8") 
and 25.4 mm (1"). Bushings can be fitted on the machine axle 
to adjust the machine to the centre hole of the blade. Use a 
bushing with the correct diameter! The blades are marked 
with the diameter of the centre hole.

The blade is placed on the bushing (C) between the inner 
flange washer (A) and the flange washer (B). The flange 
washer is turned so that it fits on the axle.

Tightening torque for the bolt holding the blade is: 15-25 Nm 
(130-215 in.lb).

The shaft can be locked using a screwdriver, steel pin or the 
like. This is slid in as far as possible. The blade is tightened 
clockwise.

When a diamond blade is mounted on the power cutter make 
sure that the diamond blade will rotate in the direction 
indicated by the arrow on the blade.

When the blade is replaced with a new one, check the flange 
washers and the drive axle. See instructions under the 
heading Checking the drive axle and flange washers.

Guard for the blade

The guard must always be fitted on the machine. The guard 
for the cutting equipment should be adjusted so that the rear 
section is flush with the work piece. Spatter and sparks from 
the material being cut are then collected up by the guard and 
led away from the user.

Summary of Contents for K 750 SpeedMill

Page 1: ...E E E En n n ng g g gl l l li i i is s s sh h h h K750 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: ...ions 8 General working instructions 9 Cutting blades 11 ASSEMBLY Checking the drive axle and flange washers 13 Fitting the cutting blade 13 Guard for the blade 13 FUEL HANDLING Fuel 14 Fuelling 14 STARTING AND STOPPING Starting and stopping 15 MAINTENANCE Tensioning the drive belt 16 Replacing the drive belt 16 Belt pulley and clutch 16 Carburettor 16 Fuel filter 17 Air filter 17 Starter 17 Spark ...

Page 4: ...cover 6 Choke 7 Throttle lockout 8 Throttle control 9 Start throttle lock 10 Stop switch 11 Starter handle 12 Starter 13 Muffler 14 Fuel tank 15 Automatic decompression valve 16 Guard for the blade 17 Adjustment handle for guard 18 Belt guard 19 Water connection with filter 20 Cutting arm 21 Rating plate 22 Belt tensioner 23 Cutting head 24 Cutting blade 25 Combination spanner 26 Operator s manual...

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: ...as the throttle is pressed When the grip on the handle is released the throttle trigger and the throttle trigger lock both return to their original positions This is controlled by two independent return spring systems This means that the throttle trigger is automatically locked in the idle position Guard for the blade This guard is fitted above the cutting blade and is designed to prevent parts of...

Page 7: ... 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 s idle adjustment See instructions under the heading Maintenance Checking the blade guard Check that the guard is complete and without any cracks or deformations WARNING All servic...

Page 8: ... care should be taken with abrasive discs Abrasive discs must be stored on a flat level surface If blades are supplied with a backing pad then a spacer should be used to keep them flat If an abrasive disc is stored in humid conditions this can cause imbalance and result in injury Inspect new blades for transport or storage damage Fuel safety Refuelling Fuel mixture Storage Never refuel the machine...

Page 9: ...is of a general character Check information for each blade regarding individual cutting characteristics for example diamond blades requires less feeding pressure than an abrasive discs 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 Al...

Page 10: ...tting blade to be thrown from an object when the upper quadrant of the blade known as the kickback zone touches an object General rules Never start to cut with the upper quadrant of the blade as shown in the figure also known as the kickback zone Always hold the machine in a firm grip with both hands Hold it so that the thumbs and fingers grip round the handles Keep a good balance and a firm footh...

Page 11: ...contact local authorities and make sure you are following applicable directives Abrasive discs The cutting material on abrasive discs consists of grit bonded using an organic binder Reinforced blades are made up of a fabric or fibre base that prevents total breakage at maximum working speed if the blade should be cracked or damaged A cutting blade s performance is determined by the type and size o...

Page 12: ...g 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 Material Diamond blades are ideal for masonry reinforced concrete and other composite materials Diamond blades are not recommended for cutting metal Diamond blades for wet cutting Diamo...

Page 13: ...ntre hole The blade is placed on the bushing C between the inner flange washer A and the flange washer B The flange washer is turned so that it fits on the axle Tightening torque for the bolt holding the blade is 15 25 Nm 130 215 in lb The shaft can be locked using a screwdriver steel pin or the like This is slid in as far as possible The blade is tightened clockwise When a diamond blade is mounte...

Page 14: ...tart 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 handle dr...

Page 15: ... 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 exten...

Page 16: ...ace when damaged Belt pulley and clutch Never start the engine when the belt pulley and clutch are removed for maintenance Carburettor The carburettor is equipped with fixed needles to ensure the machine always receives the correct mixture of fuel and air When the engine lacks power or accelerates poorly do the following Check the air filter and replace if necessary When this does not help contact...

Page 17: ...low the filter to dry NOTE High pressure compressed air can damage the foam Put the filter in a plastic bag and pour the filter oil over it Knead the plastic bag to distribute the oil Squeeze the excess oil out of the filter inside the plastic bag and pour off the excess before fitting the filter to the machine CAUTION Never use common engine oil 2 The paper filter is accessible under cover B This...

Page 18: ... so tension the spring Repeat the procedure 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 recoi...

Page 19: ... electrode gap is 0 5 mm CAUTION Always use the recommended spark plug type Use of the wrong spark plug can damage the piston cylinder Cooling system To keep the working temperature as low as possible the machine is equipped with a cooling system The cooling system consists of 1 Air intake on the starter 2 Air guide plate 3 Fins on the flywheel 4 Cooling fins on the cylinder 5 Cylinder cover Clean...

Page 20: ...rectly Weekly maintenance 8 Check clean or replace the foam plastic filter 9 Check that the handles and vibration damping elements are not damaged 10 Clean the spark plug Check that the electrode gap is 0 5 mm 11 Clean the fins on the flywheel Check the starter and the recoil spring 12 Clean the cooling fins on the cylinder 13 Check that the muffler is securely attached and not damaged 14 Check th...

Page 21: ...SEM Type of ignition system CD Spark plug Champion RCJ 6Y Electrode gap mm 0 5 Fuel and lubrication system Manufacturer of carburettor Zama Carburettor type C3 Fuel tank capacity litre 0 9 Weight Power cutter without fuel and cutting blade kg 12 300 mm 9 4 14 350 mm 9 8 Noise emissions see note 1 Sound power level measured dB A 112 Sound power level guaranteed LWA dB A 113 Sound levels see note 2 ...

Page 22: ...x 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 19432 SMP Sve...

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Page 24: ... z R h 6 2006 11 23 z R h 6 1150287 26 ...

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