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MAINTENANCE OF YOUR TRIMMER
ON COMPLETION OF TRIMMING
Clean grass from under deck. Remove any
leaves or grass cuttings from around the engine
cooling fins, carburettor and impeller air openings.
AIR FILTER MAINTENANCE
Your Tecumseh engine is equipped with a dry
paper cartridge air filter.
Every 10 operating hours check condition of
paper cartridge.
Every 50 operating hours (or more regularly)
replace the paper cartridge. (see Air Filter
Cleaning Instructions number 1).
Do not attempt to wash, clean or oil the paper
cartridge.
If engine is operating in dusty or dirty areas, the
air filter system will require more frequent
Air Filter Cleaning Instructions
(see illustration)
1. Turn cover (3) (anti-clockwise) and remove it
and filter (2) from flange (1). Discard paper
cartridge.
2. Clean cover and flange thoroughly.
3. Insert new cartridge (2) onto flange (1).
4. Position cover (3) against flange (1) with tab (4)
on cover inserted into slot (5) in flange (1).
5. Push cover firmly against flange and turn it
(clockwise) as far as it will go. Be sure
retainers are locked around flange.
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2
3
1
4
1. When cleaning the air cleaner, also check and
clean the debris guard using a soft brush.
2. If debris guard is very dirty, unscrew wing nut
and remove debris guard and filter.
3. Wash filter in clean soapy water, rinse, wrap in
a clean dry cloth and 'squeeze dry'.
4. Re-assemble ensuring that the recoil rope
passes through the slot in the foam filter.
COOLING SYSTEM AIR INTAKE
Never operate the engine without the debris guard
and filter being fitted. Failure to fit the debris guard
and filter will cause premature engine failure.
SPARK PLUG
An oily or carboned spark plug makes starting dif-
ficult and decreases the efficiency of the engine.
Periodically remove the spark plug and clean and
adjust when necessary. Gap setting 0.030"
DIFFICULT TO START
Check that the start/stop switch is in the 'start' position.
Ensure hole in tank cap is clean.
Fuel mixture may be stale (e.g. long time since
trimmer was used). Renew with fresh mixture.
Check that correct amount of 2 stroke oil is being
used in the fuel mixture.
Checkthatthecuttingdiscissecurelytightened.
ENGINE OVERHEATING
Check flow of air over cylinder. Remove all
grass and dirt. Check correct fuel mixture.
Thoroughly clean Debris Guard.
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
Do not remove spark plug when engine is hot.
Do not sand blast the spark plug to clean it.
Remove spark plug lead and spark plug.
WINTER CARE
For trouble-free trimming next season, make
sure that your trimmer is serviced immediately
after the last cut of the year, as follows:-
When the engine is cold, drain all fuel from the
tank and then run the engine until it stops. (Fuel
left in the machine becomes stale and causes
difficult starting). Thoroughly cleanallexternal
partsofthetrimmer. Clean air filter (see air filter
maintenance).
Inspect, clean and replace spark plug.
Do not replace spark plug lead.
Check and replace cutting lines.
Store the trimmer in a dry, damp-proof secure
area out of the reach of children.
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.
Fig. 3
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.
Fig. 4
Carefully pull the line into place as
illustrated in Fig. 5.
Fig. 5
FAULT FINDING HINTS
POOR FLOTATION OR
LACK OF POWER
Check correct fuel mixture is used.
Ensure underside of deck is clean.
Air filter may need cleaning (seeair filter
maintenance).
Ensure exhaust port on silencer does not have
excessive build-up of carbon.
Remove disc/impeller and clean thoroughly
between vanes.
At all times the amount of line extending beyond
the edge of disc should be of an even length. If
there is a variation of more than half an inch
between the four lengths of line replace
immediately with four full new lengths.
Important:- Only fit four cutting lines at any
one time
HEIGHT ADJUSTMENT
2
3
Fig A
1
1. Loosen bolt (A1), using a 13mm socket.
Remove bolt (A1), spring washer (A2), washer
(A3), cutting disc (A4) and spacer (A5) (if fitted).
2. Carefully remove impeller (A6) from engine shaft.
3. Select required height of cut, (See Figs B, C, D &
E) and replace any cutting lines required, ensuring
that cutting line is fitted on correct side of cutting disc.
Important:- Cutting line must be on the side
of the disc facing the grass when fitted.
4. Replace impeller (A6) on to engine shaft ensur-
ing that it is correctly located. Replace spacer
(A5) (if fitted), cutting disc (A4), washer (A3),
spring washer (A2) and bolt (A1).
5. Secure assembly with bolt (A1), making sure
complete assembly is tight, (if in doubt, contact
your service dealer).
Highest
Fig B
height of cut
Fig C
Fig D
Lowest
Fig E
height of cut
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
A full warranty statement is detailed on the
service literature, and with the Tecumseh
engine literature supplied with this product.
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5
4
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