CO/Tech DB7655 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

31-4777 DB7655

Two-stage snow blower

Tvåstegs snöslunga

To-trinns snøfreser

Kaksivaiheinen lumilinko

Ver. 20130523

Original instructions

Bruksanvisning i original

Original bruksanvisning

Alkuperäinen käyttöohje

ENGLISH

4.8 kW Two-stage snow blower

Art.no: 31-4777 Model DB7655

Please read theentire instruction manual before using theproduct and save it for future reference.

We reserve theright for any errors in text or images and any necessary changes made to technical data.

If you have any questions regarding 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.

Danger – rotating fan blades.

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.

Danger – risk for electric shock (machines with electric start). Never start the machine from the

mains (230V) under rainy conditions.

Disposal of this product should be in accordance with local regulations. If you are unsure how to

proceed, contact your local authority.

ENGLISH

General safety precautions

• Read carefully through theinstructions and inform yourself about all controls and functions and how to

correctly use thesnow blower.

• Never let children or others who do not have theadequate knowledge of these instructions use

thesnowblower. Localordinances can have restrictions regarding theuser’s age.

• Never use themachine in thevicinity of others, especially children or animals.

• Remember theuser/driver is always ultimately responsible for accidents caused by use of theproduct.

• Be careful of falling or slipping while thesnow blower is in reverse.

• Never use thesnow blower whilst under theinﬂuence of drugs, alcohol or medicine. Donot use theproduct

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 themanufacturer or theretailer where theproduct was purchased.

Safety precautions during use

• Make sure to keep hands and feet away from rotating parts. Avoidthedischarge chute.

• Certain engine parts will become very hot during use. Riskfor 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. Beattentive for possible hazards and

nearbytrafﬁc. Avoidsteep inclines.

• Never point thedischarge chute towards public roads or trafﬁc.

• Stop theengine immediately if you have struck aforeign object. Inspectthemachine carefully after

suchanincident. Donot reuse thesnow blower until any possible damage has been repaired.

• If thesnow blower begins to vibrate abnormally, turn off theengine immediately and ﬁnd thecause.

Vibrationsare normally asign of problems.

• Existing safety features may not be disconnected or made inoperative.

• Never use thesnow blower in thevicinity of fences, cars, windows, inclines, etc. without properly

adjustingthedischarge chute.

• Always keep children away from areas to be cleared of snow.

• Never overload theblower by driving it too fast.

• Be very careful when reversing. Alwayslook behind you for possible obstacles.

• Never point thechute towards onlookers. Neverlet anyone stand in front of thesnow blower.

• Never use thesnow blower in conditions of inadequate visibility or improper lighting.

• Make sure you are steadily balanced and have aﬁrm grip on thehandles while using thesnow blower.

• Use only theincluded cleaning tool to clean out thechute and impeller housing. Neveruse your hands.

• Never use thesnow blower on theroof.

Contents

• Snow blower

• Chute

• Spark plug spanner

• 2 ignition/safety keys

• 2 shear pins with locking nuts

• Instruction manual

ENGLISH

3 4 5 6 7

Controls and functions

1. Headlight

2. Drive control handle

3. Chute angle control

4. Gear lever (6 forward gears and 2 reverse gears)

5. Headlight switch

6. Feed screw control handle

7. Chute direction crank

8. Chute

9. Clean-out tool

10. Impeller housing

11. Feed screw

12. Shave blade

13. Skid shoe supports (one on each side)

14. Choke

15. Primer

16. Ignition key

17. Throttle

18. Oil ﬁll/dipstick

19. Fuel cap

20. Electric start button (230 V)

21. Electric starter socket

22. Starter handle

23. Oil drain hole

ENGLISH

Installation

Upper and lower handle assemblies

1. Unscrew the4 large plastic nuts, washers and bolts from thelower handle.

2. Raise theupper handle assembly and align it with thelower handle assembly.

3. Screw together theassemblies.

Chute direction crank

The crank comes in two parts and is bolted together with theincluded sleeve.

1. Thread thetwo ends into thesleeve.

2. Align theends’ bolt holes with theones in thesleeve and assemble.

3. Securely ﬁt thelocking

nutsintoplace but do not

overtighten.

4. Fasten thecrank’s support

bracket into theupper handle

assembly’s left side by threading

it into thehole. Tighten thenuts

and washers.

5. Thread thecrank into thebottom

bracket and fasten it using

thesplit pin.

Mounting the discharge chute

1. Remove theretaining bolt at thebottom of thechute’s base.

2. Insert thechute into its base. 3. Re-insert theretaining bolt and

tighten thenut securely.

ENGLISH

Operation

Oil level checks and refills

Note: The snow blower comes without engine oil. Oilmust be ﬁlled before using thesnow blower.

Engineoil capacity is 600 ml.

• Use SAE 5W-30 grade 4-stroke petrol engine oil, service

category SG, SF.

• Unscrew thedipstick and ﬁll up with engine oil so that

thelevel is within therecommended mark on thedipstick.

Donot overﬁll!

• Do not screw thedipstick cap into place when measuring.

Holdit ﬂush against theﬁlling hole to measure.

IMPORTANT:

The oil should be changed after theﬁrst 5 hours of use.

Pre-operational precautions

• Make sure that thearea being cleared is free from loose and foreign objects.

• Make sure that thecontrols are easily manoeuvrable and that they return to their original position when released.

• Disengage all controls before starting theengine.

• Pre-plan thearea to be cleared in order to avoid personal or property damage by ﬂying objects.

• Never use thesnow blower without proper clothing. Useappropriate footwear with solid traction especially

in slippery conditions.

• Under no circumstances may maintenance and service be performed when theengine is on (if not otherwise

directed by theinstruction manual).

• Always you safety glasses or avisor when operating, servicing or carrying out maintenance.

• Always use an earthed extension lead approved for outdoor use when using the230 V electric starter.

• Adjust theheight of theimpeller housing so that there is enough free clearance when driving over

gravelsurfaces, etc.

• Let thesnow blower adjust to outdoor temperatures before using.

Refuelling precautions

Note: The engine has a dummyplug that on other models is used for engine

oil control and ﬁlling. Onthis model theplug does not have afunction.

Note: Petrol is highly ﬂammable.

• Use only 95 or 98 octane unleaded petrol.

• Store thefuel in acontainer that is suitable for petrol.

• Always ﬁll thecontainer outdoors and do not smoke while ﬁlling.

• Do not overﬁll! Thefuel level should not exceed the maximum fuel

level indicator (see ﬁg.).

• Fill with fuel before starting theengine. Neveropen thefuel cap for

ﬁlling when theengine is running or when warm.

• Replace thefuel cap securely and wipe off any excess fuel.

ENGLISH

Manual start

Note: Check theoil and fuel levels before starting. Makesure thedrive control and feed screw are disengaged.

1. Insert theignition key

completelyinto theignition.

Thekey must not be turned,

butmake sure it is fullyinserted.

2. Set thethrottle control to

fullthrottle.

3. Make sure thechoke is set to

cold start mode. If theengine

is warm, set thechoke to

theopposite position.

4. Press theprimer about 3–5 times. Coverthevent hole in thecentre of theprimer bladder when pushing. Incold

weather conditions theengine may need to be primed again. Iftheengine is warm, press theprimer once.

5. Slowly pull thestarter handle until you feel some resistance. Use aquick and powerful motion when

pulling thehandle to start. Donot release thehandle but keep it in position and then slowly return it to

itsoriginalposition.

6. Once theengine has been started and is warm, slowly turn thechoke control to its starting position.

7. If theengine should stall, restart it with thechoke set in themiddle position for ashort time. Oncetheengine

is stable, slowly return thechoke to its original position.

Electric start

1. Connect themains lead to a230 V earthed wall socket.

5. Press theprimer about 3–5 times. Coverthevent hole in thecentre of theprimer bladder when pushing. Incold

weather conditions theengine may need to be primed again. Iftheengine is warm, press theprimer once.

6. Depress thestart button (20). Release it once theengine has started. Thestarter motor is equipped with an

overload switch which will trigger if thestarter motor becomes overheated. Thestarter motor must then be

allowed to cool before attempting arestart.

7. Once theengine has been started and is warm, slowly turn thechoke control to its starting position.

8. If theengine should stall, restart it with thechoke set in themiddle position for ashort time. Oncetheengine

is stable, slowly return thechoke to its original position.

9. Unplug themains lead from thepower point ﬁrst and then from thesnow blower.

2. Insert theignition key

completelyinto theignition.

Thekey must not be turned,

butmake sure it is fullyinserted.

3. Set thethrottle control to

fullthrottle.

4. Make sure thechoke is set to

cold start mode. Donot use

thechoke if theengine is warm.

ENGLISH

Safety checks

Note:

Check that thefeed screws are in proper order theﬁrst time you use thesnow blower and also before every

new season. Theremust be some amount of free play in drive control wire (6).

1. Start thesnow blower and squeeze thedrive control handle. Letthefeed screws run for about 10 sec.

Repeatthis procedure several times.

2. Release thedrive control and inspect thefeed screws from thefront. Makesure that thefeed screws are

completely still and show no tendency of rotating.

3. If thefeed screws are rotating or show atendency to rotate while thecontrol handle is disengaged, turn off

theengine and adjust thewire tension.

Skid shoe adjustment

• Normal use: Adjust theskid shoes to about ½ to 1 cm below theshave blade.

• Hard packed snow: Adjust theskid shoes slightly higher (in order to lower theshave blade).

• Gravel or uneven surfaces: Adjust theskid shoes lower (in order to raise theshave blade).

Operation

1. Plan thearea of operation and where thesnow is to be removed before starting.

2. Start theengine and set thethrottle to full.

3. Let theengine warm up for afew minutes to reach full power before beginning snow removal.

4. Set theshift lever to an appropriate gear for theexisting conditions. Secondgear in thedrive position is

meant for normal conditions appropriate for most snow removal situations.

5. Use theswitch to turn on theheadlight when necessary (5).

6. Squeeze thedrive feed screw control (6) to begin snow removal.

7. Squeeze thedrive control handle (2) to start it into drive.

Note: Never move theshift lever while thesnow blower is in motion and always release thedrive handle

when changing gears.

8. Completing work: Let theengine idle afew minutes before stopping it. Letthesnow blower and feed

screw stand still in order to let most of themoisture and snow dry off.

9. With theengine still running, pull thestarter cable 3–4 times to prevent it from freezing in position.

Aputtering noise will be heard. This is normal and it will in no way damage themachine or thestarter motor.

Turning off the engine

1. Pull thethrottle back completely.

2. Remove theignition key.

3. Carefully clean theentire snow machine and move thecontrols back and forth to prevent them freezing

intopostion.

Care and maintenance

Note: Turn off theengine, remove theignition key and remove thespark plug cable from thespark plug before

servicing, cleaning or maintenance.

Lubrication

• Regularly lubricate theshift lever and other moving parts with afew drops of motor oil and/or spray

(e.g. 5–56, WD 40). Donot over-lubricate!

• Use atype of universal grease suitable for cars and machinery on thescrew end of thechute

directionalcrank. Donot over-lubricate!

ENGLISH

Servicing and lubricating the feed screw

• The feed screw is equipped with shear pins (24) that are meant to

shear if thefeed screw strikes hard compacted ice or other foreign

objects. Thesnow blower is supplied with extra shear pins so that they

can be replaced when needed.

Note: Never substitute theshear pins with ordinary bolts. Thiscan

seriously damage thesnow blower if thefeed screw becomes stuck

and immovable.

• Unscrew theshear pins once per season and spray inside theshaft

with lubricant. Alsolubricate thescrew shafts’ ﬂange bearings (25).

Transmission, feed screw and clutch control adjustments

Testing and adjusting the transmission

Follow these procedures:

1. With the engine off, move the shift lever to the highest gear (6th).

Releasethedrive control lever. The blower should now be in neutral and

freelymoveable in both directions.

2. Squeeze the drive control. The blower should now be unable to be

movedforward.

3. Release the drive control and the blower should be freely moveable again.

4. Move the shift lever to one end (reverse 2nd gear) and then to the other

(6thgear). You should feel no resistance in the lever and the blower should

befreely movable regardless of which gear it is in.

Adjusting the shift lever wire

The shift lever has two wires, one for each direction. Make sure that all the gears

work and that the shift lever can be easily moved to its end points (6th gear and

reverse 2nd gear). Use the adjusting nut (26) and screw (27) on one of the wires to

adjust when necessary. Releasing tension in one wire should cause the other one

to become taut.

Feed screw

Adjusting the feed screw control wire:

1. Pull up the dust boot (28) over the wire bracket (29).

2. Pull up on the bottom wire to increase wire slack in the upper wire enabling

you to remove the hook.

3. Turn the bracket over and begin working the s-hook loose from the bracket.

4. Pull the wire taut and insert the hook down a notch on the bracket.

5. Start the engine, check performance and adjust if necessary.

Note: If the feed screws do not turn when engaged then the amount of free

play in the wire is too great. Move the s-hook to a hole further down the bracket

ifneeded.

Clutch

Adjusting the clutch wire:

1. If the blower has a tendency to move backwards or forwards without having the clutch engaged, then

the wire is too taut. Adjust the wire so that there is some free play in it using the same procedure used for

adjusting the feed screw control wire described above.

2. If the blower does not move backwards or forwards with the clutch engaged, then the wire is too loose.

Tighten by moving the s-hook down a notch on the bracket as described above.

3. Test the clutch and adjust accordingly.

Indice

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