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16 – 

English

MAINTENANCE

Tensioning the drive belt

The drive belt is fully enclosed and well protected from 
dust and dirt.

When tensioning the drive belt, slightly loosen the nuts (A) 
holding the cutting head and belt guard.

Turn the tension screw so that the nut (B) aligns with the 
arrow on the guard. Shake the head to ensure the spring 
can tension the belt. The belt now automatically has the 
right tension.

Tighten the nuts holding the cutting head.

Replacing the drive belt

Loosen the two screws (A).

Turn the tension screw (B) until tensioning stops.

Remove the two screws (A).

Remove the front belt guard (C)

Remove the belt from the belt pulley.

Remove the cutting head.

Remove the screw (D). Remove the side cover.

Replace the drive belt.

Assemble in the reverse order as set out for dismantling.

Check that the blade guard over the cutting blade is not 
cracked or damaged in any other way. Replace when 
damaged.

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 
manufactured to specifications that reduce harmful 
emissions. After the engine has used 8-10 tanks of fuel the 
engine will be run-in. To ensure that it continues to run at peak 
performance and to minimise harmful exhaust emissions 
after the running-in period, ask your dealer/service workshop 
(who will have a rev counter at their disposal) to adjust your 
carburettor.

Function

The carburettor governs the engine speed via the throttle. 
Air and fuel are mixed in the carburettor.

High speed jet

The carburetor is equipped with fixed H-jet to ensure the 
engine always receives the correct fuel air mixture. If the 
engine lacks power or accelerates poorly do the following:

Check the air filter and replace if necessary.

When this does not help, contact an authorised service 
workshop.

Low speed jet L

Apply full throttle a couple of times and check that the saw is 
accelerating without hesitation. Basic setting L: 1 1/4 turn 
open. If an adjustment is necessary, try to reach the 
maximum idle speed, by slowly closing the low speed needle 
L clockwise until the engine starves from fuel. Then open 
(counter-clockwise) 1/8 of a turn. Check the engine 
acceleration.

CAUTION! 

 A too lean adjusted low speed needle (the L-

needle closed too much) results in starting difficulties.

IMPORTANT INFORMATION

 The tension of a new drive 

belt must be readjusted after one or two tanks of fuel have 
been used.

!

WARNING! Never use the power cutter 
without a blade guard over the cutting blade.

!

WARNING! Do not start the machine without 
the cutting arm or cutting head fitted. 
Otherwise the clutch could come loose and 
cause personal injuries.

Содержание VentMaster 3120K

Страница 1: ...e read the operator s manual carefully and make sure you understand the instructions before using the machine Tempest Technology 4708 N Blythe Ave Fresno CA 93722 800 346 2143 t 559 277 7577 f 559 277...

Страница 2: ...petrol 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 t...

Страница 3: ...orking instructions 9 Cutting blades 11 ASSEMBLY Assembling the cutting head 13 Checking the drive axle and flange washers 13 Fitting the cutting blade 13 Guard for the blade 13 FUEL HANDLING Fuel 14...

Страница 4: ...rottle lock 5 Choke 6 Throttle lockout 7 Stop switch 8 Cutting head 9 Cutting arm 10 Belt tensioner 11 Cutting blade 12 Throttle control 13 Combination spanner 14 Air filter cover 15 Blade guard spray...

Страница 5: ...ommended 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...

Страница 6: ...e 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...

Страница 7: ...ol 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 instructi...

Страница 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 d...

Страница 9: ...s 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...

Страница 10: ...ting 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...

Страница 11: ...cause imbalance and result in injury High speed handheld machines Our cutting blades are manufactured for high speed portable power cutters If blades from other manufacturers are used ensure that the...

Страница 12: ...e 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 diamo...

Страница 13: ...ensions of flange washers Fitting the cutting blade Husqvarna cutting blades are manufactured and approved for freehand cutting The paper labels on each side of the blade are there to distribute the p...

Страница 14: ...art 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 fil...

Страница 15: ...und 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...

Страница 16: ...peak performance and to minimise harmful exhaust emissions after the running in period ask your dealer service workshop who will have a rev counter at their disposal to adjust your carburettor Functi...

Страница 17: ...laced 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 tepid soapy water After cleaning rinse the filter...

Страница 18: ...turned at least a further 1 2 turn when the starter cord is pulled all the way out Changing a broken recoil spring Lift up the starter pulley See instructions under the heading Changing a broken or wo...

Страница 19: ...ecommended 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 Th...

Страница 20: ...p switch works correctly Weekly maintenance 8 Check clean or replace the main filter 9 Check that the handles and vibration damping elements are not damaged 10 Clean the spark plug Check that the elec...

Страница 21: ...of ignition system ET Spark plug Champion RCJ 6Y NGK BPMR 7A Electrode gap mm 0 5 Fuel and lubrication system Manufacturer of carburettor Walbro Carburettor type WG 9 Fuel tank capacity litre 1 25 Wei...

Страница 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 ac...

Страница 23: ......

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