Husqvarna HVT40 User manual

5118384-02
AIR CUSHION GASOLINE TRIMMER
OPERATOR MANUAL HVT40
READ THESE INSTRUCTIONS
CAREFULLY!
KNOW YOUR CONTROLS.
LEARN HOW TO STOP YOUR
TRIMMER IN AN EMERGENCY
PREPARATION
Before using your new Husqvarna Hover
Trimmer, make a careful note of the
details on the serial number label, which
can be found on the rear of the deck.
Always quote these details to your dealer
when enquiring about spares and
service.
CARRYING THE TRIMMER
NOTE:
Before carrying the machine from one
trimming area to another, disconnect the
spark plug lead.
Carry the trimmer at the point of balance
(see illustration) with the cutting head
away from you.
NEVER CARRY THE TRIMMER WHEN
IT IS RUNNING.
Upper Handle
Start/Stop
Switch
Lower Handle
Tank Cap
Air Cleaner
Primer
Deck
Spark Plug/Lead
Starting Handle
Bolt, washer
and Lock nut
The handle position can be altered by
moving it forward for the park position or
back for the trimming position.
Park Position
Trimming Position
ASSEMBLY OF LOWER
HANDLE TO DECK
With the trimmer on the ground:
1.Remove the bolts (1), washers (2) and
lock nuts (3) from the polythene bag.
2.Place one washer (2) on to the bolt (1)
and secure the lower handle (4) by
placing bolts (1) through deck brackets
(5) and lower handle (4).
3.Place washer (2) on bolt and secure
with lock nut (3).
Assemble upper handle (6) to lower
handle (7) by fitting bolts (8) and washers
(9) and securing with lock nuts (10).
ASSEMBLY OF UPPER
HANDLE TO LOWER HANDLE
HANDLE POSITION
Tie
wraps
Bolt,
washer
and
Lock nut
1
2
34
5
6
7
8
10
9
Debris Guard
2

OPERATORS SAFETY
1. Always wear eye protection or safety goggles
to protect against objects thrown out by the
cutting line.
2. Always wear long trousers, gloves and heavy
shoes.
3. Only use the trimmer in the manner and for
the functions described in these instructions.
4. Never operate the trimmer when you are
tired, ill or under the influence of alcohol,
drugs or medicine.
5. Only allow persons over the age of 16 and
who have read and understood these
instructions to use this trimmer.
6. Wear hearing protection if you use this
trimmer for more than 11/4hours per day.
7. Start the engine carefully following the
‘Starting Instructions’, never start or run the
engine inside a closed room or building.
Breathing exhaust fumes can kill.
8. Keep handles free from oil and fuel.
FUEL SAFETY
1. Use a container approved for the storage of
gasoline.
2. Mix and fill fuel tank outdoors where there are
no sparks or flames.
3. Do not remove tank cap or fill the tank while the
engine is running.
4. Do not smoke or allow smoking while you are
filling the tank near stored fuel, the trimmer, or
while using the trimmer.
5. Avoid spilling fuel, wipe up any spillage
immediately.
6. Move at least 10 feet away from the fuelling site
before starting the engine.
7. Empty the fuel tank before storing the trimmer.
8. Store machine and fuel in an areawhere fuel
vapours cannot reach sparks or open flames
from water heaters, electric motors or switches,
furnaces etc.
IF NOT USED PROPERLY, THIS
TRIMMER CAN BE DANGEROUS
This trimmer can cause serious injury or death to
the the operator and others. The warnings and
safety instructions must be followed. The
operator is responsible for following the warnings
and instructions in this manual and on the trim-
mer. Read the entire Operator’s manual before
assemblingandusingthistrimmer. Restrict the
use of this trimmer to persons who have read, or
been instructed in the use of, understand and will
follow all warnings and instructions issued with
this trimmer.
CUTTING SAFETY
1. Inspect the area to be cut before each use.
Remove all objects such as stones, broken
glass, nails, wire, string etc., which can be
thrown or become entangledinthetrimmer
line.
2. Keepothersincludingchildren,animals and
bystanders, a safe distance away from the
trimmer. Stop the trimmer immediately if you
are approached.
3. Hold the trimmer firmly with both hands.
4. Only trim in daylight or good artificial light.
5. Keep a firm footing and balance, especially
on wet or damp grass.
6. Keep the trimmer flat on the grass when in
use.
7. Do not overreach.
8. Do not walk backwards.
9. Exercise extreme caution on slopes.
Carefully follow the instructions.
“USING THE TRIMMER ON SLOPES”.
10. Stop the engine before taking the trimmer
across any surface other than grass.
11. Never pick up or carry the trimmer while the
engine is running.
12. Never leave the trimmer unattended while the
engine is running.
13. Keep hands and feet away from the under-
sideofthedeck,the fast rotating cutting line
cannot be seen.
14. The cutting line continues to rotate after the
engine has been switched off.
Use only for jobs explained in this manual. If
situations occur which are not covered in this
manual, use care and good judgement. Contact
your dealer if you need assistance.
TOOL SAFETY
1. Always be sure the trimmer is in a safe
operating condition. Use only genuine
Husqvarna parts and accessories specified
for the product.
2. Only use Husqvarna replacement cutting
line, do not use wire, string or rope etc.
3. Inspect the trimmer each time before use,
especially the cutting line and mounting
disc.
4. Do not use if any parts appear or are
damaged or broken, or if any screws are
loose. Have it repaired.
5. Never use, or attempt to fit, a metal/bar
blade with this product.
6. If the trimmer starts to vibrate abnormally,
stop the engine immediately and
investigate the cause, (If in doubt, contact
your service dealer).
7. Never allow grass to collect around
the engine, especially the cooling air inlet
and outlet. Overheating will damage the
engine.
8. Do not overspeed the engine or alter the
governor settings. Excessive speed is
dangerous and can shorten engine life.
MAINTENANCE SAFETY
1. Always switch off and disconnect the spark
plug lead before performing any
maintenance or cleaning.
2. Have all servicing, other than cutting line
replacement, carried out by a qualified
service engineer.
3. Use only genuine Husqvarna replacement
parts. Failure to do so could create a hazard
and may invalidate your warranty.
4. Clean after use. Never clean your trimmer
with water, just use a dry cloth or soft brush,
never usecleaningfluidsorsolvents.
5. Allow the engine to cool before storing the
trimmer. Store the trimmer in a dry, damp-
proof, secure area, out of reach of children.
WARNING AND SAFETY INSTRUCTIONS
WARNING
THE FOLLOWING WARNING IS ATTACHED TO THE TRIMMER AND MUST BE
ADHERED TO AT ALL TIMES.
Read Operator’s manual. * Remove objects that can be thrown by trimmer. * Do not
trim when children and others are around. * Wear safety glasses while operating
machine. * Do not use on slopes which are wet or too steep to maintain firm footing.
* Be sure trimmer has stopped before placing hands or feet near cutting head.
* Do not fit a metal/bar blade as a cutting mechanism on this machine. * Use only the
cutting head device approved by the Manufacturer. * Cutting head continues to
rotate after machine is switched off. * Disconnect spark plug lead before cleaning or
adjusting the machine.
WARNING
The engine exhaust from
this product contains
chemicals known to the
State of California to cause
cancer, birth defects or
other reproductive harm.
WARNING WARNING

HOW TO USE YOUR TRIMMER
FUEL MIXTURE
To operate the engine, you will need the
following:-
1.A clean, high quality 2 cycle oil.
Tecumseh specially formulated oil is available
at any Authorised Tecumseh Service Outlet.
Order as part number 730227.
Do not use multi-viscosity oils.
Disregard mix ratio instructions on oil contain-
ers if instructions conflict with fuel mix chart
below.
2. A fresh, clean, unleaded regular
automotive gasoline. (Leaded regular and
unleaded or leaded premium grades of gaso-
line are acceptable substitutes.)
Note:Do not use gasoline containing methanol
(wood alcohol). Gasoline containing up
to 10% ethanol or grain alcohol
(“Gasohol”) may be used but requires
special care when engine is unused for
extended periods.
Do not attempt to mix oil and gasoline in the
engines own fuel tank.
Ensure that the fuelinboththe fuel mixture
container and the engines fuel tank are
thoroughly mixed before use.
Donotfillthefueltankinanenclosedarea,
when the engine ishotorwhile youare smok-
ing.
Thoroughly clean around the fuel tank filler cap
before filling, this will help to prevent dirt being
introduced into the fuel system.
Do not fill the tank while the engine is running.
Fill the fuel tank through a funnel fitted with a
fine filter.
Never fill fuel tank completely. Fill tank to 1/ 2”
below bottom of filler neck to provide for fuel
expansion.
Fuel should be stored in a cool place away
from naked flames.
Your carburettor is pre-set. Normally no further
adjustment is required.
STARTING AND
STOPPING
2. Move switch to ‘start’ position.
USING THE ENGINE PRIMER
When starting the trimmer for the first time or
after running the fuel tank dry, press the primer
15-20 times (fig 1), to establish the fuel supply
to the carburettor.
COLD START - if the engine is cold and there
is fuel in the tank.
Press the primer 8 to 10 times (fig 1).
STARTING
1. Connect spark plug lead.
HOW TO CUT
TOUGH AND HIGH GRASS
Before cutting, particularly in long grass,
examine the ground and remove stones etc.
If grass is particularly tough, go slowly in order
to keep the engine revs up.
USING THE TRIMMER ON
SLOPES
Exercise extreme caution while using this
trimmer on slopes.
A slope is defined as uneven terrain on which
you, the operator, are unable to maintain your
feet firmly on level ground in order to use the
trimmer.
Do not use this trimmer on slopes which are
wet or too steep to maintain a firm footing
Always use heavy shoes when using this
trimmer.
Never push the trimmer up the slope.
Always keep the trimmer below you on the
slope.
COMPLETION OF TRIMMING
Havingcompletedthetrimming,stopthe
engine.
As soon as the engine begins to fade, tilt the
trimmer.
Disconnect the spark plug.
Cleaning Trimmer:- Remove grass adhering
to the underside of deck. A clean machine will
always work better and last longer than a dirty
one.
3. Place your left foot on the deck and grasp
the far arm of the handle with your left hand.
Tilt the trimmer towards you. (See Fig 2)
Pull the starting handle gently until you feel
compression. Let the starting handle return
slowly. Firmly pull the handle the full length,
when the engine should start; if not, repeat
the above procedure.
WARM START - if the engine is warm and
there is fuel in tank - DO NOT USE THE
PRIMER.
If the engine has run out of fuel, refill the tank
and press the primer 8-10 times
Fuel Mix Chart Mixture 24:1
U.S. S.1. (Metric)
Gas Oil to be added
1 Gal. 5 oz. Petrol
4 Liters
20 Liters
Oil to be added
2 Gal. 11 oz.
27 oz. 8 Liters 167 ml
333 ml
833 ml
NOTE: IF THE ENGINE FAILS TO START
AFTER 3 PULLS, PRESS THE PRIMER A
FURTHER 3-5 TIMES AND FOLLOW
STEP 3.
Only when engine is running should the
trimmer be gently lowered to the horizontal
floating position. Always allow the engine to
warm up for a minute or two before
trimming.
STOPPING
1.Move start/stop switch to 'stop' position.
2.As the engine dies, tilt the trimmer to
one side. This prevents a ring being
cut in your lawn.
3.When the engine has stopped, lower
the trimmer onto the ground.
4.Put the handle in the Parking position.
5 Gal.
STOP - STOP START -
Fig. 1
Fig. 2

MAINTENANCE OF YOUR TRIMMER
ON COMPLETION OF TRIMMING
Cleangrassfromunder deck. Remove any
leavesorgrasscuttings from around the engine
coolingfins,carburettorand impeller air openings.
AIR FILTER MAINTENANCE
●YourTecumseh engine isequipped with adry
papercartridge air filter.
●Every10 operating hourscheck condition of
papercartridge.
●Every50 operating hours(or more regularly)
replacethe paper cartridge.(see Air Filter
CleaningInstructions number 1).
●Donot attempt towash, clean oroil the paper
cartridge.
●Ifengine is operatingin dustyordirty areas,the
airfilter system willrequire more frequent
Air Filter Cleaning Instructions
(seeillustration)
1. Turncover (3) (anti-clockwise) andremove it
andfilter (2) from flange(1). Discard paper
cartridge.
2. Cleancover and flangethoroughly.
3. Insertnew cartridge (2) ontoflange (1).
4. Positioncover (3) against flange(1) with tab (4)
oncover inserted intoslot (5) in flange(1).
5. Pushcover firmly againstflange andturn it
(clockwise)as far asit will go. Besure
retainersare locked aroundflange.
COOLING SYSTEM AIR INTAKE
1. Whencleaning the aircleaner, alsocheck and
cleanthe debris guardusing a softbrush.
2. Ifdebris guard isvery dirty,unscrew wing nut
andremove debris guardand filter.
3. Washfilter in cleansoapy water,rinse, wrap in
aclean dry clothand ‘squeeze dry’.
4. Re-assembleensuring that therecoil rope
passesthrough the slotin the foamfilter.
FAULT FINDING HINTS
SPARK PLUG
Anoily or carbonedspark plug makesstarting dif-
ficultand decreases theefficiency of theengine.
Periodicallyremove the sparkplug and cleanand
adjustwhen necessary. Gap setting0.030”
WINTER CARE
CUTTING LINE
The cutting line is sharp, wear gloves and
take care when handling it.
Check the cutting line frequently during
use and on completion of trimming.
Removing the Cutting Line
Switch machine off and disconnect spark plug
lead.
Push the line towards the centre of the cutting
disc and carefully remove. See Fig 3.
DIFFICULT TO START
Checkthatthestart/stopswitchisinthe‘start’position.
Ensureholeintankcapisclean.
Fuelmixturemaybestale(e.g.longtimesince
trimmerwasused). Renewwithfreshmixture.
Checkthatcorrectamountof2strokeoilisbeing
usedinthefuelmixture.
Checkthatthecuttingdiscissecurelytightened.
POOR FLOTATION OR
LACK OF POWER
ENGINE OVERHEATING
EXCESSIVE VIBRATION
Check that the cutting disc is securely fastened
and undamaged.
Tighten all external bolts and screws.
Check crankshaft - it may have bent.
ENGINE WARRANTY
9006 Perimeter Woods Drive ●Charlotte, NC 28216 ●1-800-GET-SAWS ●Dealer Locator 1-800-HUSKY 62 ●Web Site www.husqvarna.com ●Dealer Web Site www.husqvarna.service.com
The policy of continuous improvement means that specifications may be altered without prior notice. 1997 Husqvarna. HVT40 Operator Manual Part
Neveroperatetheenginewithoutthedebrisguard
andfilterbeingfitted. Failure to fit the debrisguard
andfilterwillcause premature engine failure.
Fortrouble-free trimming nextseason, make
surethat your trimmeris serviced immediately
afterthe last cutof the year,as follows:-
Whenthe engine iscold, drain allfuel from the
tankand then runthe engine untilit stops. (Fuel
leftin the machinebecomes stale andcauses
difficultstarting). Thoroughlycleanallexternal
partsofthetrimmer. Clean airfilter (see airfilter
maintenance).
Inspect,clean and replacespark plug.
Donot replace sparkplug lead.
Checkand replace cuttinglines.
Storethe trimmer ina dry, damp-proofsecure
areaout of thereach of children.
Fig. 4
Atall times theamount of lineextending beyond
theedge of discshould be ofan even length. If
thereis a variationof more thanhalf an inch
betweenthe four lengthsof line replace
immediatelywith four fullnew lengths.
Important:- Only fit four cutting lines at any
one time
Check flow of air over cylinder. Remove all
grass and dirt. Check correct fuel mixture.
Thoroughly clean Debris Guard.
A full warranty statement is detailed on the
service literature, and with the Tecumseh
engine literature supplied with this product.
Check correct fuel mixture is used.
Ensure underside of deck is clean.
Airfilter mayneedcleaning(seeair filter
maintenance).
Ensure exhaust port on silencer does not have
excessive build-up of carbon.
Remove disc/impeller and clean thoroughly
between vanes.
5 2 3
4
1
HEIGHT ADJUSTMENT
Fig A
1. Loosenbolt(A1),usinga13mmsocket.
Removebolt(A1),springwasher(A2),washer
(A3),cuttingdisc(A4) andspacer(A5) (iffitted).
2. Carefullyremoveimpeller(A6) fromengineshaft.
3. Selectrequiredheight of cut, (See Figs B, C, D &
E) andreplace any cutting lines required,ensuring
thatcuttinglineis fittedon correctsideofcuttingdisc.
●Important:- Cutting line must be on the side
of the disc facing the grass when fitted.
4. Replaceimpeller(A6) ontoengineshaftensur-
ingthatitiscorrectlylocated. Replacespacer
(A5) (iffitted),cuttingdisc(A4),washer(A3),
springwasher(A2) andbolt(A1).
5. Secureassemblywithbolt(A1),makingsure
completeassemblyistight,(ifindoubt,contact
yourservicedealer).
Fig. 3
1
4
5
6
Donot remove sparkplug when engineis hot.
Donot sand blastthe spark plugto clean it.
Removespark plug leadand spark plug.
Renewing the Cutting Line
Holding the line with thumb and forefinger and
using other thumb as a guide, curve around
centre portion of the cutting disc (as illustrated
in Fig 4) and thread through the hole on the
rim of the cutting disc.
Carefully pull the line into place as
illustrated in Fig. 5.
Fig. 5
Fig B
Fig C
Fig D
Fig E Lowest
height of cut
Highest
height of cut
2
3