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23/26/32 LC/L 531 03 00-75 Workshop Manual For Husqvarna Parts Call 606-678-9623 or 606-561-4983 www.mymowerparts.com

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husqvarna trimer repair manual

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Page 1: husqvarna

23/26/32 LC/L

531 03 00-75

Work

shop M

anual

For Husqvarna Parts Call 606-678-9623 or 606-561-4983

www.mymowerparts.com

Page 2: husqvarna

H U SFOREST&GARDENEffective May 1, 1992

WARRANTY STATEMENT

SECTION1:LIMITEDWARRANTY

SECTION2:HUSQVARNA’SOLIGATIONS

UNDERTHEWARRANTY

SECTION3:ITEMSNOTCOVERED

BY THISWARRANTY

SECTION5:CUSTOMERRESPONSIBILITIES

SECTION6:PROCEDURETO OBTAIN

WARRANTYCONSIDERATION

530-0683-912-04/21/92

HUSQVARNA FOREST& GARDEN COMPANY9006J PERIMETERWOODS DRIVE . CHARLOTTE216

Husqvarna Forest & Garden Company (“Husqvarna”) warrants Husqvarna product to the originalpurchaser to be free from defective materialand workmanshipfrom the date of purchasefortheWarrantyPeriod” here stated dependent upon the type of productiveWarranty period as follows for products listed:

5 YEAR WARRANTY: Plastic walk behind mower decks for noncommercial,noninstitutionalornonincome producing use.2 YEAR WARRANTY: Riding lawn mowers,yard and garden tractors,walk behind mowers,tillers andattachmentsfor noncommercial,noninstitutionalor nonincomeproducing use. Ignitionsystemson thechain saws, cleaning saws and trimmers,1 YEAR WARRANTY: Chain saws, clearing saws, trimmers, blowers and batteries fornoncommercial,noninstitutionalor nonincome producing use,90 DAY WARRANTY:@ Husqvarna product used for rental, commercial, professional,or incomeproducing use.30 DAY WARRANTY: Husqvarna professional bow bars,30 DAY REPLACEMENT PART WARRANTY: Unless otherwise stated, replacement parts arewarranted for 30 days from date of purchase.

Husqvarnawill remedydefects in material and workmanshipduring the warranty period by repairing orreplacing, at Husqvarna’soption, the defective component without charge for parts or labor,

The following items are not covered by this warranty:(1)

(2)(3)(4)(5)

(6)

Normal customer maintenance items (i.e., belts, blade adapters, bulbs, filters, guide bars,lubricants, rewind springs, saw chain, spark plugs, starier ropes and tines).Normal wear, normal adjustment,standard hardware or items worn through regular use.Natural discoloration of material due to ultraviolet light.The replacementor maintenanceof worn items.Briggs & Stratton, Kawasakiand Kohler engines, including starters,generators, alternators andaccessories.These items are covered by the engine manufacturer’swarranty as stated with theproduct information supplied at the time of purchase, All claims for specified engines, starters,generators, alternators and accessoriesshould be sent to the appropriate manufacturer.Agri-Fab, Foote, and Tecumseh-Peerlessdrive systems.These items are covered by the drivesystem manufacturer’swarranty as stated with the product information supplied at the time ofpurchase. All claims for specified drive systemsshould be sent to the appropriate manufacturer.

This warranty shall be inapplicable to defects resulting from the following:(1)

(2)

(3)

(4)(5)

Accident, abuse, misuse, negligence and neglect, including stale fuel, dirt abrasives, moisture,rust, corrosion or any adverse reaction due to incorrect storage habits.Failure to operate or maintain the unit in accordancewith the Owner’s/Operator’smanual orinstructionsheet furnished by Husqvarna,Alterations or modificationsthat affect the units performance,operation, safety,durability,change its intended use, or cause failure of compliance with current regulatory standardsor applicable federal, state or local laws.Useof partsor accessorieswhichare not recommendedby HusqvarnaForest& Garden Company.Additional damage to parts or componentsdue to continued use occurring after any of the above.REPAIR OR REPLACEMENTAS PROVIDED UNDER THIS WARRANTYISTHE EXCLUSIVEREMEDYOF THE CONSUMER.HUSQVARNASHALL NOT BE LIABLE FORANY INCIDENTALOR CONSEQUENTIALDAMAGESFORBREACHOFANY EXPRESSER IMPLIEDWARRANTYON THESE PRODUCTSEXCEPTTO THE EXTENT PROHIBITEDBY APPLICABLE LAW.ANYIMPLIEDWARRANTYOF MERCHANTABILITYOR FITNESS FOR A PARTICULARPURPOSEON THESE PRODUCTSIS LIMITEDINDURATIONTOTHE WARRANTYPERIODAS DEFINEDINTHELIMITEDWARRANTYSTATEMENT. HUSQVARNARESERVESTHE RIGHTTOCHANGEOR IMPROVETHE DESIGNOF THE PRODUCTWITHOUTNOTICE,AND DOES NOTASSUMEOBLIGATIONTO UPDATE PREVIOUSLYMANUFACTUREDPRODUCTS.

Somestatesdonotallowtheexclusion ofincidentalorconsequentialdamages, orlimitationson howlongan implied warranty lasts,so the above limitationsor exclusionsmay not apply to you. This warranty givesyou specific legal rights, and you may also have other rights which vary from state to state.

The customer mustexhibit reasonablecare, maintenance,operations, storage and general upkeep aswritten in the maintenance section of the Owner’s/Operator’s manual. Should an operational problem orfailure occur the product should not be used, but delivered as is to an authorized Husqvarna dealer forevaluation. Proof of purchase, as explained in section 6, rests solely with the customer.

It is the Owner’s and Dealer’s responsibility to make certain that the Warranty Registration Card isproperly filled out and mailedto HusqvarnaForest& Garden Company.This card should be mailed withinten (10) days from the date of purchase in order to validate the warranty and to provide post-saleservice.

Proof of purchase must be presented to the authorized Husqvarna dealer in order to obtain warrantyservice.This receipt must include the date purchased, model number, serial number, and complete nameand address of the selling dealer.

To obtain the benefit of this warranty, the product believedto be defective mustbe delivered in a timelymanner,within thirty (30) days from date of operational problem or failure, and during the warranty period,to any authorized Husqvarnadealer. The product mustbe delivered to the dealer, at the owner’sexpense.An authorizedHusqvarnadealercan be normally locatedthroughthe’’Yellow Pages’’of the Iocaltelephonedirectory.

For Husqvarna Parts Call 606-678-9623 or 606-561-4983

www.mymowerparts.com

Page 3: husqvarna

2

3

4

6

7

11

13

16

19

25

32

34

HUSQVARNA WARRANTY

MODEL SPECIFICATIONS

TROUBLE SHOOTINGSuggestionsCause/Remedy Chart

SHIELDAttachment

TRIMMER HEADHead InstallationSpool InstallationProper Line FeedReassembly

DRIVE SHAFTLubrication

THROTTLE CABLERemoval & Installation

ELECTRICAL SYSTEMSSpark Plug Replacement

Checking for SparkIgnition Switch

CARBURETOR & FUEL SYSTEMSAir Filter

Removal & CleaningCarburetor

Acceleration & Deceleration ChecksSpeed & Mixture Adjustments

CLUTCH SYSTEMClutch Removal & InstallationStarter Rope Removal & Installation

CYLINDER, PISTON & RINGPiston & Cylinder ReplacementRing Replacement

CRANKCASEReed Valve ReplacementCrankshaft RemovalBearings ReplacementSeal Replacement

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Page 4: husqvarna

TROUBLESHOOTING

SUGGESTIONS

Engine will not continue to runat idle position.See “Idle Speed Adjustment” and“Low Speed Mixture Adjustment”

Trimmer head continues to spinwhen the engine idles.See “Idle Speed Adjustment>>and “Deceleration Check>’.

Engine dies or hesitates when itshould accelerate.see “Acceleration Check”.

Loss of cutting power whichcannot be corrected by cleaningthe air filter.See “High Speed MixtureAdjustment”.

Engine does not return to idle fromfull throttle within 2 seconds.see “Deceleration Check”.

Engine will not run.See “Trouble Shooting Chart”.Only then, if the carburetor requiresadjustment, begin with“Basic Carburetor Settings”.

NOTES:

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Page 5: husqvarna

MODEL

23LC 26LC 32LC/L

2-StrokeAirCooled - —

23CC/1.35cu.in. 26CC/1.6cu.in. 32CC/1.9cu.in.

7500/3000

SolidState

WalbroWA-199

AutoRewind

SparkArresting

15in./3802cm

500ml/17oz.

ChampionCJ-14

.025in./O.635mm

.012in./O.3O5mm

Husqvarna50:1

.080in./2mmdia.

15in./38.2cm

17in./43.2cm

SPECIFICATION

ENGINETYPE

DISPLACEMENT

ENGINERPM(MaximumOperating/Idle)

IGNITION

CARBURETOR

STARTER

MUFFLER

CUTTINGPATH

FUELTANK

SPARKPLUG

SPARKPLUGGAP

MODULEAIRGAP

LUBRICATION

CUTTINGLINE

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Page 6: husqvarna

SHIELDSHIELD ATTACHMENT

The shield must be properly installed. The shield providespartial protection from the risk of thrown objects to theoperator and others and is equipped with a line limiterwhich cuts excess line to the proper length.

FAILURE TO INSTALL SHIELD IN POSITIONSHOWN CAN RESULT IN SERIOUS INJURY

TO THE OPERATOR. THE LENGTH OFSHIELD MUST BE ALIGNED WITH LENGTH

OF DRIVE SHAFT HOUSING.DIRECT WIDEST PART OF SHIELD

TOWARDS THE ENGINE.

CAUTIONTHE LINE LIMITER IS LOCATED ON

UNDERSIDE OF SHIELD AND HAS A KNIFEEDGE THAT IS SHARP AND CAN CUT YOU.

NOTE:

1. Match the key (raised area) on theshield with “V” slot on drive shafthousing.

NOTE:Rest the bottom of shield on top ofthe shoulder (not the dust cup) ofdrive shaft housing.

2. Install shield bracket and screws asshown.

NOTE:I It is easier to start the screws with a

screwdriver and finish tighteningwith a wrench.

3. Tighten screws evenly and securely.

I It is possible that a small space will be leftbetween the bracket and shield when the screws

I are fully tightened.

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Page 7: husqvarna

TINGCHARTREMEDY

TROUBLESHOOCAUSETROUBLE

1. Filltankwithcorrectfuelmixture.2. Installnewplug/checkignitionsystem.3. Cleanfuelfilter/inspectfuelline.4. See“CarburetorAdjustments”.

1. Fueltankempty,2 Sparkplugisnotfiring.3 Fuelisnotreachingthecarburetor.4 Carburetorneedsadjustment.5. Noneoftheabove.

Enginewillnotstartor runsforonlya fewsecondsafterstarting.

1. See“CarburetorAdjustments”.2. See“CarburetorAdjustments”.3. See“CarburetorAdjustments”.

1. Idlespeedsettoofastortooslow.2. Lowspeedmixturerequiresadjustment.3. Throttletriggersettootight.4. Noneoftheabove.

Enginewillnotidleproperly.

1. Cleanorreplaceairfilter.2. Cleanorreplacesparkplug.orregap.3. See“CarburetorAdjustments”.

1. Airfilterisdirty.2. Sparkplugisfouled.3. Carburetorrequiresadjustment.4. Muffleroutletsplugged.5. Noneoftheabove.

Enginewillnotaccelerate,lackspoweror diesundera load.

1. Airfilterisdirty.2. Fuelmixtureisincorrect.3. Highspeedmixturerequiresadjustment.4. Chokeon.

1. Cleanorreplaceairfilter.2. Refuelwithcorrectfuelmixture.3. See“CarburetorAdjustments”.Enginesmokesexcessively.

1, See“CarburetorAdjustments”.2. Replacewiththecorrectplug.

1. Highspeedmixturesettoolow,(Lean)2. Sparkplugincorrect.

Enginerunshot.

1. Carburetorrequiresadjustment.2, Throttlecablebinding.3. Clutchrequiresrepair.

1. See“CarburetorAdjustments”.2. See“ThrottleCableSection”.3. See“ClutchSection”.

Cuttingattachmentturnsat idlespeed.

1. Replaceorsee“Assembly”.2, See“CarburetorAdjustments”.3. See“ClutchSystem”.

1. Driveshaftisbrokenornotengaged.2. Carburetorrequiresadjustments.3. Clutchrequiresrepair.

Cuttingheadstopsundera loador doesn’tturn whentheengineisaccelerated.

1.2.3.4.

5.

1. Lineimproperlyroutedinhead.2. Lineimproperlywoundontospool.3. Linesizeisincorrect.4. Notenoughlineoutsidetbehead.

5. Dirtaccumulatedoncovercut-outs.

Removecoverandchecklinerouting.Rewindlinetigbtlyandevenly.Useonly2mm(.080inch)line.Removecoverandpullout10cm(4inches)ofline.Cleancovercut-outs.

Linedoesn’tadvanceor breakswhilecutting.

1. Useonly2mm(.080inch)line.2. Useproperspool.3. Cutwiththetipoftheline.

4. Reducecuttingspeed.

1. Linesizeincorrect.2. Incorrectspool

3. Crowdinglineagainstthematerialbeingcut.

4. Cuttingatahigherspeedthannecessary.

Lineweldsontospool,

1. Removethecoverandcheckthelinerouting.1. LineimproperlyroutedintheheadLinereleasescontinuously.

1. Removethecoverandcheckthelinerouting.2. Useonly2mm(.080inch)line.3. Reducespeedaroundhardobjects.4. Cutwiththetipoftheline.

1. Lineimproperlyroutedinthehead.2. Linesizeisincorrect.3. Cuttingathighspeedsaroundhardobjects4. Crowdinglineagainstmaterialbeingcut.

Lineusageisexcessive.

Linepullsbackintohead. 1. Removethecoverandpullout10cm(4inches)oflinetotheoutside. 5

1. Toolittlelineoutsideofthehead.

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Page 8: husqvarna

TRIMMERHEADPROPER LINE FEED

1. Hold trimmer head as shown.

2. Press lock tab and turn lock ring as shownon Tap-N-Go II. For Tap-N-Go 111presslock tabs in and pull straight off.

3.

4.

5.

Remove lock ring and spool.

Thoroughly clean dirt and debrisfrom all parts.

Carefully check all parts for damage andreplace as needed.

REPLACE ALL DAMAGED PARTS.TRIMMER HEAD PARTS THAT ARE

CHIPPED OR DAMAGED IN ANY WAYCAN FLY APART AND

CAUSE SERIOUS INJURY.

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Page 9: husqvarna

TRIMMERHEADINSTALLATION & REMOVAL Ir

1.

2.

Place dust cap over hex nut located on endof drive shaft housing.

I

Once in place hold dust cap with a wrench to preventarbor shift from turning on 26 RLC and 26 LCunits. On straight shaft units use the locking pin tohold dust cap from turning.

3. Thread trimmer head onto arbor shaft by rotatinghead (clockwise for curve shaft units, counter-clockwise for straight shaft units) against dustcap and tighten by hand.

4. To remove trimmer head reverse steps (

INSTALLING SPOOLWITH LINE

-

thru 3 ).

Use only Husqvarna pre-wound spools with 2mm (.080inch) diameter line. (Use of anything other thanHusqvarna spools or line may result in breakage, linewelding and improper line feed.)

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Page 10: husqvarna

TRIMMERHEAD

9. Carefully check to make sure all threecatches and lock tab are fastened properlyas shown (test lock ring by trying to turn itcounterclockwise) on Tap-N-GoII

10. Depress top button and pull on the

/ H line to change spool from lockedposition to operating position.

11. To get correct line length(lOcm or 4 inches as measuredspool to the tip of each line) presstapbutton and pull on line again.

from

I

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Page 11: husqvarna

TRIMMERHEADTRIMMER HEAD REASSEMBLY

,:., ...

6. Insert end of line into line exit hole.

e::,,/. .

,.

7. Place spool in hub. (Make sure trimmer line isnot caught between rim of the spool and thehub.)

8. Align lock ring over the three catches on thehub. Push lock ring down onto hub and turnclockwise as shown.

I ..

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Page 12: husqvarna

4. Remove drive shaft from drive shaft housing.

II

.“

5. Check drive shaft for broken wires, twists, orkinks, replace as necessary.

6. Use a clean cloth to thoroughly wipe old greaseor dirt from drive shaft.

7. Apply a uniform coat of drive shaft lubricantto entire surface of drive shaft.

8. Replace drive shaft in drive shaft housing.Turn shaft until it seats in bottom housing.To check this turn drive shaft by hand.Trimmer head should rotate.

9. Reassemble drive shaft housing into engine.Follow steps 1 & 2 in reverse order and tightenthe clutch shroud screws securely.

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Page 13: husqvarna

DRIVESHAFT

2. Carefully pull throttle trigger away from foamgrip handle, then remove barrel end of throttlecable from the throttle trigger. Carefully pullthrottle cable out of foam grip.

1

3. Loosen clutch shroud screws and removedrive shaft housing from engine.

1

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Page 14: husqvarna

THROTTLECABLE

.-

2. Secure throttle cable under plasticretaining clip.

NOTE:Do not excessively bend or kink thethrottle cable!

3. Align posts on end of cable attachmenthead with the correct post holes shown.

= 4. Install screw through cable attachment head with a4mm hex wrench.

5. Place throttle cable end intohole on adjustment side ofcarburetor and reinstall fuelline.

NOTE:Be sure the carburetor gasket is properlypositioned before reinstalling the carburetor,

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Page 15: husqvarna

THROTTLECABLETHROTTLE CABLE REMOVAL

1.

2.

3.

4.

5.

Remove screw and nut from throttletrigger housing.

throttle trigger.

I

Carefully pull throttle cable 01

Remove air filter cover.( SEE AIR FILTER SECTI~

Remove the two screwssecuring choke plate andcarburetor assembly.Remove fuel line and plugto avoid gas leakage.Remove throttle cablefrom carburetor.

6. Remove the 4mm screw securing cableattachment head and remove cable from I

7.

around clip.

Pull cable out from engine to

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Page 16: husqvarna

~LECTRICALSYSTEMSSPARK PLUGREPLACEMENT

~ 1. On 26 LC and 32 LC units the spark plugis located under the engine cylindercover. Remove the 4 four (mm) screws togain access to the spark plug.

2. Remove ignition lead from spark plug.

3. Unscrew spark plug, counterclockwise,using a 3/4” socket.

-~ 4. The spark plug electrode gap is 0.025 in.

(.635mm).

5. When installing a new plug, tighten it 1/4turn past finger tight.

6. Replace spark plug lead and top cover forLC units.

16 I

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Page 17: husqvarna

THROTTLECABLE

6. Align carburetor holes with shroud assemblyholes and be sure carburetor gasket remains inplace.

NOTE:Be sure impulse hole on carburetor alignswith pulse hole on shroud and mounting

7.

gasket does not interfere with pulse passage.

Reinstall screwschoke into carbushroud assembly

8.

9.

Reinstall air filter.

Reinstall throttle c1 thru 3 (page 13).

15

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Page 18: husqvarna

ELECTRICALSYSTEMS

IGNITION SWITCH

The ignition switch is located in different areas depend-ing on trimmer model. For 26 RLC and 32 RLC modelsthe switch is located on the engine cover. For 26 LC and32 LC models the switch is located either on the enginecylinder cover or next to the throttle trigger mounted onthe trimmer shaft.

STEPS 1 THRU 4ARE FOR LC MODELS ONLY

.- I 1. Remove screwhousing.

2. Remove the PI

I and

Iillip

nut from throttle trigger

screw from switch cover.

3. Disconnect wires from underside of starter housingas shown.

4. Carefully pull out wiring assembly and replace asnecessary.

5. On RLC models, remove clutch housing, clutchand starter housing assembly as shown in starterrepair section.

8

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Page 19: husqvarna

ELECTRICALSYSTEM!CHECKING FOR SPARK

1. Remove the spark plug using spark plugreplacement procedure 1thru 3 and clean off allcarbon, dirt and other deposits. Check the gapbetween the electrodes. The air gap should be0.25in (.635mm).

2. Ground sparkplug to cylinder and turn stop switchon, give the starter rope one hard pull. A sparkshould occur between the electrodes.

3. If no spark occurs, test with a new spark plugor test plug.

4. Ifstilswitconlof

5.

6.

no spark occurs, disconnect leads for on/offi.Pull starter rope again. If a spark occurs, theswitch is faulty and should be replaced.

If there is still no spark, check the ignition connec- L/2tion leads and contacts for poor connections, dirt, 1

breakage or damaged installation. Check ignitionY

module air gap, it should be set from.012 to.015 in. 4-.

If there is still no spark, replace the ignition modual. 17

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Page 20: husqvarna

— —.—————— ——

:ARBURETOR&F1

ACCELERATION CHECK

1. Allow engine to idle.

2. Squeeze trigger fully.a.

b.

If performance is satisfactory, refer to“Deceleration Check”.IF ENGINE ACCELERATION IS SLOWOR ERRATIC, repeat “Idle Speed Adjustment”(page 23) or continue through low speed mixtureadjustments to obtain proper acceleration.

3. Repeat step 2 until smooth acceleration is obtained.

NOTE:It maybe necessary to repeat “Idle SpeedAdjustment Acceleration Checks” to obtaincorrect adjustments. See page 23.

4. Follow instructions in “Deceleration Check.”

DECELERATION CHECK

1.

2.

3.

4.

Allow engine to idle, then squeeze throttle trigger fully.

Allow engine to run at full speed for 1 to 2 seconds.

Release throttle trigger to idle position and listen todeceleration of engine. It must return to a smooth idlewithin 1 to 2 seconds.a. IF PERFORMANCE IS SATISFACTORY,

proceed to step 4.b. IF ENGINESLOWLYOR ERRATICALLY

RETURNSTO IDLEOR IDLESERRATICALLY,repeat “Idle Speed Adjustment” or continuethrough low speed mixture and high speedmixture adjustments to obtainproper deceleration.

Recheck idle speed.

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Page 21: husqvarna

CARBURETOR&FUELSYSTEMS

1.

2.

3.

Remove air filter from cover. ~

Wash air filter with soap and hot water.

4.

IS

5.

DO NOT CLEANAIR FILTER

WITH GASOLINEOR ANY OTHER

FLAMMABLE SOLVENTTO AVOIDCREATING

A FIRE HAZARD!

Squeeze the filter and allow to air dry.

CAUTIONMAKE SURE AIR FILTER

I

I

SECURELY FITTED INTO CORNERSOF COVER TO KEEP DUST FROM 1=

ENTERING THE ENGINEAND CAUSING DAMAGE.

Reinstall air filter cover. Make sure choke exitslot is placed over choke lever.

19

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Page 22: husqvarna

CARBURETOR&FUELSYSTEMS

2

IDLE

I

IMPORTANT :ALL CARBURETOR ADJUSTMENTSSHOULD BE MADE WITH A ENGINE

TACHOMETER TO ACHIEVEACCURATE SETTINGS.

NOTE:In most cases, your engine can be made to runproperly with minor carburetor adjustment.Refer to “TROUBLE SHOOTING SUGGES-TIONS” for the condition you are experiencingand follow the correct instructions. The basiccarburetor settings are provided below.

1. Rotate the low and high speed mixture screwclockwise to a lightly seated position.DO NOT TURN THE SCREWS UNTIL THEY ARETIGHT AS DAMAGE TO THE NEEDLE SEATSCAN OCCUR!

2. Turn the low speed mixture and high speed mixturescrews one full turn counterclockwise.

ADJUSTING PROCEDURE

PREPARATION

~ 1. Use a fresh oil fuel mix ofliusqvama 50 to 1 oil.

I I I

3.

Make sure line extends to lengthallowed by line limiter to providecorrect load on engine.

Start engine.Run trimmer for 2 to 3 minutes towarm up engine.

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Page 23: husqvarna

—— ——— —.———.—— — —.

CARBURETOli

MAKE CARBURETOR ADJUSTMENTSWITH THE DRIVE SHAFT HOUSING

SUPPORTED TO PREVENT TRIMMER LINEFROM COMING INTO CONTACT

WITH ANY OBJECTS.HOLD TRIMMER WITH YOUR HAND;

DO NOT USE OPTIONAL SHOULDER STRAPFOR SUPPORT.

KEEP BYSTANDERS AWAY WHENMAKING CARBURETOR ADJUSTMENTS.

CARBURETOR ADJUSTMENTS

Poor engine performance can be a result of other causessuch as a dirty air filter or carbon buildup on muffleroutlets, etc. Please see “Trouble Shooting Chart” beforeproceeding with carburetor adjustment.

Very small adjustments can effect engine performance.It is very important to turn the screw a very small amountper adjustment and test performance before making anyfurther adjustments. Each adjustment should be no morethan the width of the slot of the adjusting screw.

This is a complicated task and it is important to followinstructions in sequence as indicated.

&FUELSYSTEM!

I IDliE-/

21

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Page 24: husqvarna

CARBURETOR&F

4

JELSYSTEMS5. The trimmer head should not rotate after thelowspeed

has been adjusted. If so repeat the IDLE SPEEDADJUSTMENT procedure and check LOW SPEEDMIXTURE ADJUSTMENT again.

CAUTIONTHE TRIMMER HEAD MUST NOT

ROTATEAT IDLE.RECHECK IDLE SPEED AFTER EVERY

CARBURETOR ADJUSTMENT.

CAUTIONDO NOT OPERATE THE ENGINE

AT FULL THROTTLE FOR PROLONGEDPERIODS WHILE MAKING

HIGH SPEED ADJUSTMENTS ASDAMAGE TO ENGINE CAN OCCUR !

1HIGH SPEEDMIXTURE ADJUSTMENT

IDLEE

1. Support drive shaft housing sotrimmerhead attachmentis off the ground and will not make contact with anyobjects.

2. Allow the engine to warm up 2 to 3 minutes.

NOTE:Preform step 3 at full throttle.

Turn high speed mixture screw counterclockwise(rich) slowly until the engine begins to run rough.Then turn the high speed mixture screw slowlyclockwise ( lean ) until the recommended no loadoperating speed is reached. (7500 R.P.M.)

NOTE:The proper high speed setting is 7500 R.P.M.

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Page 25: husqvarna

CARBURETOIDLE SPEED ADJUSTMENT

1. Allow engine toidle.

2. Adjust idle speed screw just below clutch engage-ment speed. The cutting attachment should not ro-tate. The proper idle speed is 2600 to 3400 R.P.M.

[

NOTE:

1

,,’Turning the screw clockwise will increase engine ~R.P.M. counterclockwise will decrease R.P.M. ~

.,,

CAUTION,,,,.,,..,;:

THE TRIMMER HEAD ,;*,,MUST NOT ROTATEAT IDLE. :*.:;

jRECHECK IDLE SPEED AFTER EVERY “;~

CARBURETOR ADJUSTMENT.%;,!,-,,,’,,,

LOW SPEEDMIXTURE ADJUSTMENT d

L

NOTE:

1.

2.

3.

4.

Idle adjustment should be preformed prior to lowspeed adjustment, for accurate carburetor setting.

Allow engine to warm up 2 to 3 minutes.

Turn low speed mixture screw slowly clockwiseuntilengine speed starts to drop (lean) without stallingthe engine. Note this position.

Turn low speed mixture screw counterclockwiseuntil engine speed increases then starts to drop again(rich) without stalling the engine. Note this position.

Set the low speed mixture screw at the mid-point be-tween the two positions.

NOTE:The proper idle speed is from 2600 to 3400 R.P.M.

t &FUELSYSTEMS

UxE

23

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Page 26: husqvarna

CLUTCHSYSTEM

~ 8. Separate clutch shroud from engine.

WHEN REMOVING CLUTCHRETAINING NUT USE ONLY

A HAND TOOL.DO NOT STRIKE CLUTCH

IN ANY WAYOR USE ANY TYPEOF MOTORIZED TOOL

ON THE CLUTCH

4

OR ELSE THE CLUTCHCAN FLY APART

ND CAUSE SERIOUS INJURY.

9. Remove nut with a 9/16 inch wrench(turn counterclockwiseas shown on clutch.)

1NOTE:

Clutch will slide off thecrankshaft intact.Do not disassemble.

10. To reassemble reverse steps 1-9.

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Page 27: husqvarna

CLUTCH REMOVAL & INSTALLATIONI

NEVER STARTTHE ENGINE WITHTHE CLUTCH DRUM HOUSING

ASSEMBLY REMOVED. IF YOU DOCLUTCH SHOES WILL SEPARATE

FROM THE SPIDER AND CANCAUSE SERIOUS INJURY.

NOTERefer

.‘:

to throttle cable secsteps 1 thru 3.

1. Disconnect spark plug wire.

2. Remove spark plug.

3. Insert piston stop part number 5025033-01into spark plug opening and tighten.

NOTE:For the following steps (4 thru 6)refer to Throttle Cable section.

4. Remove screw and nut from throttle triggerhousing.

5. Hold throttle trigger away from foam grip andremove barrel end of throttle cable fromthrottle trigger.

6. Carefully pull throttle cable out of foam grip.

7. Remove the 4 clutch shroud screws with a4mm hex wrench.

25.

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Page 28: husqvarna

CLUTCHSYSTEM

!8

~5. Separate clutch drum housing asssemblyfrom engine.

= 6. Remove clutch retaining nutby turning counterclockwisewith a 9/16 wrench. With nutremoved, clutch will slide offcrankshaft with the beveledwasher and large flat washerbehind the clutch.

I NOTE:Do not disassemble clutch hub,spring and shoe assembly.

NEVER START ENGINE WITH CLUTCH DRUMHOUSING ASSEMBLY

REMOVED. IF YOU DO, THE CLUTCH SHOESWILL SEPARATE FROM HUB AND CAUSE

SERIOUS INJURY.

NOTE:~ If the rope is broken, spring tension may

already be released. However always use cau-tion and eye protection when performingstarter repairs.

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Page 29: husqvarna

CLUTCHSYSTEMSTARTER ROPE REMOVAL I

NEVER START ENGINE WITH P.,.

CLUTCH DRUM HOUSING ASSEMBLY I r ‘. I

1.

REMOVED. IF YOU DO, THE CLUTCHSHOES CAN SEPARATE FROM HUB

AND CAUSE SERIOUS INJURY.

Disconnect spark plug wire. On LC modelsremove top cover to disconnect sparkplug wire.For LC models remove switch wires from igni- 1tion coil at this time.

2.

?

3. Remove the four screws holding clutch drum housingand starter assembly. On throttle trigger mountedswitches, it will be necessary to disconnect wires from

4.

underside of starter housing assembly.

JInsert a piston stop Apart number5025033-0 Ainto the spark plug holeand tighten. /

27

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Page 30: husqvarna

:LUTCHSYSTEMSTARTER ROPE INSTALLATION

NOTE:Always wear safety glasses when workingon the starter assembly.

1. Place starter pulley back into the starter housing,making sure pulley interlocks with starter spring.

2. Reinstall starter pulley retaining tab(s).

3. Hand turn starter pulley 8 revolutions clockwiseon 32 R models and counterclockwise on26 RLC and LC models.

4. Turn the pulley counterclockwise two fullrevolutions on 32 R, clockwise on 26 LC,RLC and 32 RL.

5. Align notch on pulley with the housing notchnext to the retaining tab.

6. Insert a center punch into the hole that thenotches form, to hold pulley in position.

7. Use a 1.5mm diameter, 42 inch long piece ofHusqwmna replacement rope.

8. Move at least 3m (10 feet) away from fuel tankwith replacement rope. With a match, melt bothends of replacement rope to prevent fraying.

9. Insert rope through pulley hole and then throughrope eyelet in housing.

10. Pull rope through eyelet, until about 6 inches ofrope remains on outside of pulley.

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Page 31: husqvarna

CLUTCHSYSTENlI

7. On RLC units, remove the starter assembly from theengine. On LC units, remove four 4mm screwssecuring starter housing assembly and remove starter.

NOTE:Always wear safety glasses when working onstarter assemblv repairs.

DO NOT REMOVE THE PULLEY RETAINING TABAND SCREW WITHOUT RELEASING SPRINGTENSION. THE SPRING BENEATH THE PUL-LEY IS UNDER PRESSURE AND CAN COME

OUT AND CAUSE SERIOUS INJURY.

8. If starter spring is under tension, cut starter rope justbelow starter handle to release starter spring tension.

NOTE:If the rope is broken, spring tension may already

Fbe released. Always use eye protection when “’~~7working on starter repairs.

r

I11. Starter spring may now beremoved as necessary.

I10. Remove pulley retaining tab(s) as s

Carefully remove pulley without distarter spring from starter housing.

L

STARTER SPRING WILL STILL HAVESOME TENSION. USE EYE PROTECTION

WHEN WORKING ON STARTERSPRING REPLACEMENT.

I

I

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Page 32: husqvarna

CYLINDER.PISTON&RING

)

CAUTIONTHE MUFFLER

IS HELD TO THECYLINDER BYTWO SPRINGS.ALWAYSWEAR

SAFETY GLASSESWHEN

REMOVINGMUFFLER

RETAININGSPRINGS.

CYLINDER & PISTONREPLACEMENT

1. Remove spark plug.

2. On RLC units refer to crankshaft and~~ reed valve replacement section. On

I LC units remove top cover.

,,.-’” ““+4.

Remove muffler by releasingmuffler retaining springswith pliers.

Using a 5mm hex wrench partnumber 5025057-01 remove twocylinder head bolts.

Slide cylinder off unit toexpose piston.

6. Using a needle nose pliers, remove wristpin retaining clips as shown, from oneside of piston. Note piston position. Pis-ton locating pin faces right side of unitfrom operators position.

7. Using adrift, lightly tap wrist pin out andremove piston and wrist pin bearing.

8. To reinstall piston reverse steps 1 thru 8.

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Page 33: husqvarna

CYLINDER.PISTON&RING

RING REPLACEMENT

1. Refer to piston and cylinder replacement section toremove cylinder.

2. Once cylinder is removed ring can now bereplaced.

NOTE:Use caution when replacing the pistonring. Ring may break if overexpanded.

3.

4.

5.

6.

Remove old ring by ex~your fingers enough to

Expand new ring only enough to slide it over topof piston into ring groove. Use caution not toscar piston when installing new piston ring.

The ring is located on the piston by a locatingpin. The ends of the piston ring is cut only to fitone way. As shown.

To reinstall cylinder reverse steps in pistonand cylinder removal and replacement section1 thru 6.

33

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Page 34: husqvarna

CRANKCASE

REED VALVE REPLACEMENT

1. Remove engine from drive shaft andstarter (see starter section 1 thru 8).

2. Remove top cover on LC models.

3. Remove carburetor (see throttle cable removalsection 1 thru 5).

~ 4. Remove six 4mm hex head screws at back ofcarburetor area as shown.

~ 5. Separate engine from back plate housingas shown.

~ 6. Remove two phillips head screws retainingreed valve assembly.

7. Replace reed valve and reinstall reed valveback plate with Phillips head screws.

NOTE:Be sure when reinstalling reed valve backplate that the bend faces outward.

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Page 35: husqvarna

CRANKCAS

8. Replace crankcase gasket and reinstalsteps 1 thru 6 in reverse.

9. Use steps lthru 5 in this section.

using

10. Remove cylinder and piston as outlined incylinder and piston removal section.

11. Connecting rod bottom bearing protrudes out far-ther on one side. This side upon installation goestoward reed valve side.

u

11.5 Thread clutch retaining nut on crankshaft until itis flush with the top of crankshaft as shown. ~r

12. Remove flywheel.

13. Remove key incrankshaft as showl

A

I 3!

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Page 36: husqvarna

CRANKCASE—

14. Remove snap ring next to bearing withsnap ring pliers.

CRANKSHAFT REMOVAL

15. Reinstall clutch nut on crank and tap top ofcrankshaft with a soft hammer and removecrankshaft as shown.

BEARING REPLACEMENT

16. If bearing replacement is necessary, use tool(# 5025082-01) to remove outer bearing (theinner bearing will come out with crankshaft),to remove inner bearing from crankshaft use abearing puller.

17. Remove snap ring behind outer bearing ifseal replacement is necessary.

NOTE:You do not need to remove inner snap ring.This acts as a locator for reseating seal andinner bearing.

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Page 37: husqvarna

SEAL REPLACEMENT

NOTE:Make sure inner snap ring locator is in place(between inner bearing and seal). The snap ring

18.

19.

20.

21.

22.

23

locks in its own groove.

Lubricate both bearings with bearing g

Tap in inner bearing against snap ringwith service tool number 5025082-01.

ease.

ocator

Turn case over and tap in new seal against otherside of inner snap ring locator.

Install outersnap ring thatwas removedin step 17(located be-hind outerbearing).

Tap in outer bearing with

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Page 38: husqvarna

NOTES

38

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