Husqvarna 346XP 351 Operator'S Manual Download Page 37

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English

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TECHNICAL DATA

Technical data

346XP

353

Engine

Cylinder displacement, cu.in/cm

2,75/45,0

3,15/51,7

Cylinder bore, inch/mm

1,65/42

1,77/45

Stroke, inch/mm

1,28/32,5

Idle speed, rpm

2700

Power, kW/hp @ rpm

2,5/3,4 @ 9600

2,4/3,3 @ 9000

Ignition system

Manufacturer of ignition system

SEM

Type of ignition system

Electronic

Spark plug

NGK BPMR 7A/
Champion RCJ 7Y

Electrode gap, inch/mm

0,02/0,5

Fuel and lubrication system

Manufacturer of carburetor

Zama

Carburetor type

C3-EL18

Fuel tank capacity, US pint/litre

1,06/0,5

Oil pump capacity at 9,000 rpm, ml/min

5-12

Oil tank capacity, US pint/litre

0,59/0,28

Type of oil pump

Automatic

Weight

Chain saw without bar or chain, empty
tanks, lb/kg

346XP: 10,6/4,8

353: 11,0/5,0

346XPG: 10,8/4,9

353G: 11,2/5,1

346XP E-tech: 10,8/4,9 353 E-tech: 11,0/5,0

346XPG E-tech: 11,0/
5,0

353G E-tech: 11,2/5,1

Chain/bar

Recommended bar lengths, inch/cm

13-20"/33-50

Pitch, inch/mm

0,325/8,25

Thickness of drive links, inch/mm

0,050/1,3

0,058/1,5

Drive sprocket type/teeth

Rim/7

Chain speed at max. power, m/sec

18,5

17,3

Summary of Contents for 346XP 351

Page 1: ...E E En n n ng g g gl l l li i i is s s sh h h h 346XP 353 Operator s manual EPA I EPA II Please read the operator s manual carefully and make sure you understand the instructions before using the machine ...

Page 2: ...ls on the machine refer to special certification requirements for certain markets Symbols in the operator s manual Switch off the engine by moving the stop switch to the STOP position before carrying out any checks or maintenance Always wear approved protective gloves Regular cleaning is required Visual check Protective goggles or a visor must be worn Refuelling Filing with oil and adjusting oil f...

Page 3: ...G TECHNIQUES Before use 21 General working instructions 21 How to avoid kickback 28 MAINTENANCE General 29 Carburetor adjustment 29 Checking maintaining and servicing chain saw safety equipment 30 Muffler 32 Starter 32 Air filter 33 Spark plug 34 Lubricating the bar tip sprocket 34 Needle bearing lubrication 34 Adjustment of the oil pump 34 Cooling system 34 Air Injection centrifugal cleaning 35 W...

Page 4: ...ket high quality motor driven products for forestry and gardening as well as for building and construction industry Your purchase gives you access to professional help with repairs and service whenever this may be necessary If the retailer who sells your machine is not one of our authorized dealers ask for the address of your nearest servicing dealer It is our wish that you will be satisfied with ...

Page 5: ... handle 10 Stop switch Ignition on off switch 11 Fuel tank 12 Muffler 13 Bar tip sprocket 14 Chain 15 Bar 16 Bumper spike 17 Chain catcher 18 Clutch cover 19 Rear handle with right hand guard 20 Throttle control 21 Throttle lock 22 Decompression valve Model 353 23 Combination spanner 24 Chain tensioning screw 25 Operator s manual 26 Transport guard 27 Oil pump adjustment screw 28 Switch for heated...

Page 6: ...very important that you read and understand the contents of this operator s manual WARNING The inside of the muffler contain chemicals that may be carcinogenic Avoid contact with these elements in the event of a damaged muffler WARNING Long term inhalation of the engine s exhaust fumes chain oil mist and dust from sawdust can represent a health risk IMPORTANT The machine is only designed for cutti...

Page 7: ...d and the risk of accidents can increase if machine maintenance is not carried out correctly and if service and or repairs are not carried out professionally If you need further information please contact your nearest servicing dealer Chain brake and front hand guard Your chain saw is equipped with a chain brake that is designed to stop the chain if you get a kickback The chain brake reduces the r...

Page 8: ...ackwards towards the front handle Kickback can be very sudden and violent Most kickbacks are minor and do not always activate the chain brake If this happens you should hold the chain saw firmly and not let go The way the chain brake is activated either manually or automatically by the inertia release mechanism depends on the force of the kickback and the position of the chain saw in relation to t...

Page 9: ...provide the intended protection Second it must be activated during the kickback as described above to stop the saw chain Third the chain brake may be activated but if the bar is to close to you the brake might not have enough time to slow down and stop the chain before the chain saw hits you Only you and proper working technique can eliminate kickback and its danger Throttle lock The throttle lock...

Page 10: ... and use the recommended depth gauge clearance Too large a clearance increases the risk of kickback Keep the chain properly tensioned If the chain is slack it is more likely to jump off and lead to increased wear on the bar chain and drive sprocket Keep cutting equipment well lubricated and properly maintained A poorly lubricated chain is more likely to break and lead to increased wear on the bar ...

Page 11: ...ocket Number of drive links The number of drive links is determined by the length of the bar the chain pitch and the number of teeth on the bar tip sprocket Bar groove width inches mm The groove in the bar must match the width of the chain drive links Chain oil hole and hole for chain tensioner The bar must be matched to the chain saw design Chain Chain pitch inches Drive link width mm inches Numb...

Page 12: ...ze of file and gauge that are recommended for the chain fitted to your chain saw Check that the chain is correctly tensioned A slack chain will move sideways making it more difficult to sharpen correctly Always file cutting teeth from the inside face Reduce the pressure on the return stroke File all the teeth on one side first then turn the chain saw and file the teeth on the other side File all t...

Page 13: ... you can Raise the tip of the bar and stretch the chain by tightening the chain tensioning screw using the combination spanner Tighten the chain until it does not sag from the underside of the bar Use the combination spanner to tighten the bar nuts while lifting the tip of the bar at the same time Check that you can pull the chain round freely by hand and that it does not sag from the underside of...

Page 14: ...d Clean if necessary Check that the groove in the edge of the bar is clean Clean if necessary Check that the bar tip sprocket turns freely and that the lubricating hole in the tip sprocket is not blocked Clean and lubricate if necessary If the chain lubrication system is still not working after carrying out the above checks and associated measures you should contact your servicing dealer Chain dri...

Page 15: ...ccidents happen when the chain touches the operator Wear personal protective equipment See instructions under the heading Personal protective equipment Do not tackle any job that you feel you are not adequately trained for See instructions under the headings Personal protective equipment How to avoid kickback Cutting equipment and General working instructions Avoid situations where there is a risk...

Page 16: ...he chain is correctly located in the groove in the bar Tighten the bar nuts finger tight Tension the chain by turning the chain tensioning screw clockwise using the combination spanner See instructions under the heading Tensioning the chain The chain is correctly tensioned when it does not sag from the underside of the bar but can still be turned easily by hand Hold up the bar tip and tighten the ...

Page 17: ...when changing the type of fuel see instructions under the heading Carburetor Running in Avoid running at a too high speed for extended periods during the first 10 hours Two stroke oil For best results and performance use HUSQVARNA two stroke engine oil which is specially formulated for our air cooled two stroke engines Never use two stroke oil intended for water cooled engines sometimes referred t...

Page 18: ...ent electric motors relays switches boilers and the like Always store fuel in an approved container designed for that purpose For longer periods of storage or for transport of the chain saw the fuel and chain oil tanks should be emptied Ask where you can dispose of waste fuel and chain oil at your local gas station Ensure the machine is cleaned and that a complete service is carried out before lon...

Page 19: ... placing your right foot through the rear handle Pull the starter handle with your right hand and pull out the starter cord slowly until you feel a resistance as the starter pawls engage then pull firmly and rapidly Never wrap the starter cord around your hand 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 extended This can damag...

Page 20: ...ry dangerous because you may lose control of the saw Never start the machine indoors Exhaust fumes can be dangerous if inhaled Observe your surroundings and make sure that there is no risk of people or animals coming into contact with the cutting equipment Always hold the saw with both hands The right hand should be on the rear handle and the left hand on the front handle All people whether right ...

Page 21: ...ing bushes i e cutting many small branches at the same time Small branches can be grabbed by the chain and thrown back at you causing serious injury 4 Make sure you can move and stand safely Check the area around you for possible obstacles roots rocks branches ditches etc in case you have to move suddenly Take great care when working on sloping ground 5 Take great care when cutting a tree that is ...

Page 22: ...hing in the way that might make you trip or lose your balance Lack of concentration can lead to kickback if the kickback zone of the bar accidentally touches a branch nearby tree or some other object Have control over the workpiece If the pieces you intend to cut are small and light they can jam in the saw chain and be thrown towards you Even if this does not need to be a danger you may be surpris...

Page 23: ...f before the cut is complete There are five important factors you should consider before making a cut 1 Make sure the cutting equipment will not jam in the cut 2 Make sure the object you are cutting will not split 3 Make sure the chain will not strike the ground or any other object during or after cutting 4 Is there a risk of kickback 5 Do the conditions and surrounding terrain affect how safely y...

Page 24: ...Turn the log and finish the cut from the opposite side The log is supported at one end There is a high risk that it will split Start by cutting from below about 1 3 of the way through Finish by cutting from above so that the two cuts meet The log is supported at both ends There is a high risk that the chain will jam Start by cutting from above about 1 3 of the way through Finish by cutting from be...

Page 25: ...very dangerous to remove a trapped tree and there is high accident risk See instructions under the heading Freeing a tree that has fallen badly Clearing the trunk and preparing your retreat Delimb the stem up to shoulder height It is safer to work from the top down and to have the tree between you and the saw Remove any undergrowth from the base of the tree and check the area for obstacles stones ...

Page 26: ... spike bumper if one is fitted just behind the felling hinge Use full throttle and bring the bar and chain slowly into the tree Make sure the tree does not start to move in the opposite direction to your intended felling direction Drive a wedge or breaking bar into the cut as soon as it is deep enough Finish the felling cut parallel with the directional cut line so that the distance between them i...

Page 27: ...mounted Portable Cutting trees and branches that are in tension Preparations Work out which side is in tension and where the point of maximum tension is i e where it would break if it was bent even more Decide which is the safest way to release the tension and whether you are able to do it safely In complicated situations the only safe method is to put aside your chain saw and use a winch General ...

Page 28: ...lose as possible to the chain saw for maximum control If possible let the weight of the chain saw rest on the trunk Keep the trunk between you and the chain saw as you move along the trunk Cutting the trunk into logs See instructions under the heading Basic cutting technique WARNING Kickback can happen very suddenly and violently kicking the chain saw bar and chain back at the user If this happens...

Page 29: ...l the chain stops Rec idle speed 2700 rpm Fine adjustment When the machine has been run in the carburetor should be finely adjusted The fine adjustment should be carried out by a qualified person First adjust the L jet then the idling screw T and then the H jet Conditions Before any adjustments are made the air filter should be clean and the cylinder cover fitted Adjusting the carburetor while a d...

Page 30: ...drum Dirt and wear can impair operation of the brake Regularly check that the brake band is at least 0 6 mm 0 024 inch thick at its thinnest point Checking the front hand guard Make sure the front hand guard is not damaged and that there are no visible defects such as cracks Move the front hand guard forwards and back to make sure it moves freely and that it is securely anchored to the clutch cove...

Page 31: ...ull throttle Release the throttle control and check that the chain stops and remains stationary If the chain rotates when the throttle control is in the idle position you should check the carburetor idle adjustment Chain catcher Check that the chain catcher is not damaged and is firmly attached to the body of the chain saw Right hand guard Check that the right hand guard is not damaged and that th...

Page 32: ...t fumes Carbon monoxide CO which is poisonous and odorless is not however reduced Consequently never work in an enclosed or badly ventilated area Good air circulation should always prevail when working in snowy hollows ravines or in confined conditions Starter Changing a broken or worn starter cord Loosen the screws that hold the starter against the crankcase and remove the starter Pull out the co...

Page 33: ... against the crankcase Then slowly release the starter cord so that the pulley engages with the pawls Fit and tighten the screws that hold the starter Air filter The air filter must be regularly cleaned to remove dust and dirt in order to avoid Carburettor malfunctions Starting problems Loss of engine power Unnecessary wear to engine parts Excessive fuel consumption Remove the air filter after tak...

Page 34: ...eedle bearing on the output shaft This needle bearing must be lubricated regularly once a week CAUTION Use only high quality bearing grease or engine oil See instructions under the heading Cutting equipment Adjustment of the oil pump The oil pump is adjustable Adjustments are made by turning the screw using a screwdriver or combination spanner The machine is supplied from the factory with the scre...

Page 35: ...d for running in cold weather Twist the winter flap so that preheated air from the cylinder can pass into the carburetor space preventing icing of the air filter etc For temperatures below 5 C 23 F and or in snow conditions there is also a special cover A for the starter housing a winter plug B for the air nozzle that is fitted as shown These reduce the flow of cooling air and prevent large amount...

Page 36: ...wear Check the lubrication hole in the bar to be sure it is not clogged Clean the bar groove If the bar has a sprocket tip this should be lubricated Lubricate the clutch drum bearing Clean the outside of the carburetor Check that the bar and chain are getting sufficient oil File off any burrs from the edges of the bar Check fuel hose for cracks or other damage Change if necessary Check the saw cha...

Page 37: ...r of carburetor Zama Zama Carburetor type C3 EL18 C3 EL18 Fuel tank capacity US pint litre 1 06 0 5 1 06 0 5 Oil pump capacity at 9 000 rpm ml min 5 12 5 12 Oil tank capacity US pint litre 0 59 0 28 0 59 0 28 Type of oil pump Automatic Automatic Weight Chain saw without bar or chain empty tanks lb kg 346XP 10 6 4 8 353 11 0 5 0 346XPG 10 8 4 9 353G 11 2 5 1 346XP E tech 10 8 4 9 353 E tech 11 0 5 ...

Page 38: ...ocket nose bar may be considered to have equivalent or less kickback energy than the sprocket nose bar Bar and chain combinations Chain saw models Husqvarna 346XP and 353 met the kickback performance requirements of ANSI B 175 1 2000 when tested with the combinations of bars and saw chains listed below The saw chain Husqvarna H30 is also classified as a low kickback saw chain since it met the requ...

Page 39: ...ner and each subsequent purchaser that the engine is free from defects in materials and workmanship which cause the failure of a warranted part for a period of two years WHAT IS COVERED REPAIR OR REPLACEMENT OF PARTS Repair or replacement of any warranted part will be performed at no charge to the owner at an approved Husqvarna Forest Garden servicing dealer If you have any questions regarding you...

Page 40: ...and securely assembled Be sure that the saw chain stops moving when the throttle control trigger is released Shut off the engine before setting the chain saw down Use extreme caution when cutting small size brush and saplings because slender material may catch the saw chain and be whipped toward you or pull you off balance When cutting a limb that is under tension be alert for springback so that y...

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