CO/Tech DB7404 Manuale utente
ENGLISH
SVENSKA
NORSKSUOMI
Important!
Read the entire instruction manual carefully
and make sure that you fully understand
it before you use the equipment. Keep the
manual for future reference.
Viktig information:
Läs hela bruksanvisningen noggrant och
försäkra dig om att du har förstått den innan
du använder utrustningen. Spara manualen
för framtida bruk.
Viktig informasjon:
Les disse anvisningene nøye og forsikre deg
om at du forstår dem før du tar produktet i bruk.
Ta vare på anvisningene for seinere bruk.
Tärkeää tietoa:
Lue nämä ohjeet huolellisesti ja varmista
että olet ymmärtänyt ne, ennen kuin alat
käyttää laitetta. Säilytä ohjeet myöhempää
tarvetta varten.
Art.no Model
31-4818 DB7404
One-stage snow blower
Enstegs snöslunga
Ett-trinns snøfreser
Yksivaiheinen lumilinko
Ver. 201210
Original instructions
Bruksanvisning i original
Original bruksanvisning
Alkuperäinen käyttöohje
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ENGLISH
4 HP one-stage snow blower
Art.no 31-4818 Model DB7404
Please read theentire instruction manual before use and save it for future reference. Wereserve theright for any
errors in text or images and for making any necessary technical changes to this document. Ifyou should have
any questions concerning technical problems please contact our Customer Services.
Safety
Read the entire instruction manual before use.
Use ear defenders.
Wear eye protection.
Danger – rotating feed screw.
Beware of flying objects. Make sure on-lookers are kept at a safe distance.
Never touch any of the machine’s moving parts until they have stopped completely, the machine
has been turned off and the ignition key has been removed.
Never insert your hands into the discharge chute.
Keep unauthorised persons a safe distance away from the machine.
Danger - Petrol is highly flammable. Let the machine cool for at least 2 minutes before refueling.
Never start the machine indoors or in a poorly ventilated area. The engine’s exhaust contains
deadly carbon monoxide.
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General safety precautions
• Read carefully through theinstructions and inform yourself about all controls and functions and how to
correctly use thesnow blower.
• Never let children or others who do not have theadequate knowledge of these instructions use
thesnowblower. Localordinances can have restrictions regarding theuser’s age.
• Never use themachine in thevicinity of others, especially children or animals.
• Remember theuser/driver is always ultimately responsible for accidents caused by use of theproduct.
• Be careful of falling or slipping while thesnow blower is in reverse.
• Never use thesnow blower whilst under theinfluence of drugs, alcohol or medicine. Donot use theproduct
if you are tired or sick.
• This product may only be repaired by qualified staff and only using original parts.
• Never use accessories not approved for use by themanufacturer or theretailer where theproduct was purchased.
Safety precautions during use
• Make sure to keep hands and feet away from rotating parts. Avoidthedischarge chute.
• Certain engine parts will become very hot during use. Riskfor burn injuries.
• The snow blower cannot be used for any other purpose than for removing snow.
• Be careful when using on gravel paths, pavement and roads. Beattentive for possible hazards and
nearbytraffic. Avoidsteep inclines.
• Never point thedischarge chute towards public roads or traffic.
• Stop theengine immediately if you have struck aforeign object. Inspectthemachine carefully after such
anincident. Donot reuse thesnow blower until any possible damage has been repaired.
• If thesnow blower begins to vibrate abnormally, turn off theengine immediately and find thecause.
Vibrationsare normally asign of problems.
• Existing safety features may not be disconnected or made inoperative.
• Never use thesnow blower in thevicinity of fences, cars, windows, inclines, etc. without properly
adjustingthedischarge chute.
• Always keep children away from areas to be cleared of snow.
• Never overload theblower by driving it too fast.
• Be very careful when reversing. Alwayslook behind you for possible obstacles.
• Never point thechute towards onlookers. Neverlet anyone stand in front of thesnow blower.
• Never use thesnow blower in conditions of inadequate visibility or improper lighting.
• Make sure you are steadily balanced and have afirm grip on thehandles while using thesnow blower.
• Never use thesnow blower on theroof.
Pre-operational precautions
• Make sure that thearea being cleared is free from loose and foreign objects.
• Disengage all controls before starting theengine.
• Make sure that thecontrols are easily manoeuvrable and that they return to their original position when released.
• Pre-plan thearea to be cleared in order to avoid personal or property damage by flying objects.
• Never use thesnow blower without proper clothing. Useappropriate footwear with solid traction especially
in slippery conditions.
• Under no circumstances may maintenance and service be performed when theengine is on (if not otherwise
instructed by theinstruction manual).
• Always use safety glasses or avisor when operating, servicing or carrying out maintenance.
• Let thesnow blower adjust to outdoor temperatures before using.
Fuelling precautions
Note: Petrol is highly flammable.
• Use 95 or 98 octane unleaded petrol.
• Store thefuel in acontainer that is suitable for petrol.
• Always fill thecontainer outdoors and do not smoke while filling.
• Do not overfill! Thefuel level should be afew centimetres from full.
• Fill with fuel before starting theengine. Neveropen thefuel cap for filling
when theengine is running or when warm.
• Replace thefuel cap securely and wipe off any excess fuel.
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1
2
3
4 5 6 7 8 9
10
11
12
13
14
Controls and functions
1. Shave blade
2. Rubber feed screw
3. Chute
4. Chute directional handle
5. Fuel cap
6. Primer
7. Ignition
8. Starter handle
9. Feed screw clutch lever
10. Oil drain screw
11. Dipstick/oil fill
12. Muffler
13. Spark plug/spark plug cable
14. Choke
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ENGLISH
Installation
Contents
• Snow blower
• Chute with lock ring
• Spark plug spanner
• 2 ignition/safety keys
• Instruction manual
Feed screw clutch lever and wire
1. Pull up thehandle and tighten thetwo wing nuts.
2. Remove thewire bracket
on thehandle and pull up
thewire sleeve alittle to make
it easier to attach thewire to
theclutchlever.
3. Connect thewire to thebottom hole in theclutch lever.
Screw thewire bracket back on.
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Chute
1. Make sure thechute’s metal
position lock sits securely in
itscatch.
2. Hold thechute in place and
put on thelock ring.
3. Securethesnap lock on thelock ring. 4. Loosen thewing knobs
on thechute’s hood to set
thedesired discharge angle.
Tightenthewing knobs.
Operation
Oil level checks and refills
Note: The snow blower comes without engine oil. Oilmust be filled before using thesnow blower.
Engineoil capacity is 600 ml.
• Use SAE 5W-30 grade 4-stroke petrol engine oil,
service category SG, SF.
• Unscrew thedipstick and fill up with engine oil so
that thelevel is within therecommended markings on
thedipstick. Donot overfill!
Handy hint: Ask for help to tilt up thesnow blower to
make oil filling easier.
Note: Do not screw thedipstick cap into place when
measuring. Holdit flush against thefilling hole to measure.
IMPORTANT:
The oil should be changed after thefirst 5 hours of use.
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Fuelling
Fill with 95 or 98 octane unleaded petrol following theFuelling precautions procedures described above.
Start
Note: Check theoil and fuel levels before starting.
1. Insert theignition key completely into
theignition. The key can not be turned,
butmake sure it is fully inserted.
2. Make sure thechoke is set to
coldstart mode. Donot use thechoke
if theengine is warm.
3. Push theprimer bladder 3 times. Coverthevent hole in thecentre of theprimer bladder when pushing.
Incold weather conditions theengine may need to be primed again. Iftheengine is warm, press
theprimeronce.
4. Slowly pull thestarter handle until you feel some resistance. Use aquick and powerful motion when pulling
thehandle to start. Donot release thehandle but keep it in position and then return it to its original position.
5. Once theengine has been started and is warm, slowly move thechoke to its starting position.
6. If theengine should stall, restart it with thechoke set in themiddle position for ashort time. Oncetheengine
is stable, slowly return thechoke to its original position.
Operation
1. Plan thearea of operation and where thesnow is to be removed before starting.
2. Clasp theclutch lever and bring it in towards thehandle to begin snow clearance and start thefeed screw.
3. Release thelever to stop.
Note: Since thesnow blower is driven by thefeed screw and has no power to thewheels, it may be
necessary to lift thehandle somewhat to allow thefeed screw to have better contact with thesurface.
Depending on thesurface, it may also be necessary to push themachine forward somewhat to achieve
forward progress.
4. Push thehandle down somewhat to lift thefeed screw from thesurface when backing or stopping.
5. To turn off theengine, remove theignition key.
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15 16 17 1918 20 21
15. Feed screw pulley
16. Tensioner bolt
17. Drive belt
18. Tensioner
19. Wire guide
20. Tensioner wheel
21. Engine pulley
• Make sure that there are no foreign objects around themuffler.
• Inspect regularly to make sure that all bolts, nuts and screws are tight and that there is no visible damage.
• Regularly check thefuel system for any visible signs of leakage at thetank, fuel cap or fuel lines.
• Never attempt to tamper with or modify theproduct in any way.
Lubrication
• Lubricate thepoints where theclutch lever attaches to thehandle
before every season.
• Lubricate thewire guides and thetensioner bolt before and after
every season. Useafew drops of engine oil and/or spray lubricant
(e.g.5–56, WD 40). Donot over-lubricate!
Note: Make sure that no lubricant comes in contact with thedrive belt.
Changing oil
Note: Engine oil becomes hot after use. Lettheengine cool off abit before changing theoil.
1. Place anappropriate container under thedrain plug (10).
2. Remove thedrain screw and empty theoil.
3. Replace thescrew and fill with oil. SeetheOil level checks and refills section described above.
Care and maintenance
Note: Turn off theengine, remove theignition key and remove
thespark plug cable from thespark plug before servicing,
cleaning or maintenance.
Parts
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ENGLISH
0,6–0,8 mm
Spark plug
Note: Let theengine cool before unscrewing and removing thespark plug. Boththespark plug and muffler
become very hot after use. Check thespark plug before every season. Changewhen necessary.
1. Remove thespark plug cable from thespark plug. Donot pull thecable but rather
grip thespark plug cap and wiggle it back and forth to loosen it.
2. Use aspark plug spanner to remove it from its socket.
3. Check theelectrodes for any visible damage and clean with asteel brush
whennecessary.
4. Check that theelectrode gap is between 0.6–0.8 mm. Specialtools for gapping
areavailable for purchase separately.
5. Try to screw thespark plug partway in by hand to make sure thethreads catch
correctly. Tightenusing aspark plug spanner.
6. Washers on thenew spark plug must be compressed during installation.
Tightena½ turn extra after thespark plug is securely in place to compress
thewasher and create aproper seal.
7. Turn a¼ turn extra if you are using theexisting spark plug.
Handy hint: Thread asmall piece of PVC hose to thespark plug tip to make it easier to insert and thread into
the socket.
Clutch lever wire adjustment
The wire becomes slack after some usage and it may be necessary to adjust it from time to time.
1. Unscrew thewire bracket from thehandle as previously described under theInstallation section.
2. Move thewire to theupper hole.
3. Screw thewire bracket back on.
4. Start thesnow blower and check for proper operation.
5. If theclutch lever still doesn’t work satisfactorily thedrive belt should be changed.
Changing the Drive Belt
Disassembly
1. Remove theprotective
cover by removing
the4retaining screws.
2. Grab thebelt in front of thefeed
screw’s pulley and remove it
from thepulley.
3. Press thetensioner wheel down
to release thebelt from thebelt
tension tab which presses
against thefeed screw’s pulley.
Reinstallation
1. Press thetensioner wheel down to allow thebelt enough room under thebelt tension tab to be reinstalled.
2. Release thetensioner wheel and re-install thebelt in reverse order. Finishby threading thebelt to thebottom
of thefeed screw pulley.
3. Adjust thewire by attaching it to theclutch lever’s bottom hole and check for proper functioning.
4. Move thewire to theupper hole if necessary.
5. Replace theprotective cover.
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