Cotech YT9231 User Manual

Grass Trimmer

Grästrimmer

Gresstrimmer

Ruohotrimmeri

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 bruksanvisningen för framtida bruk.

Viktig informasjon:

Les disse anvisningene nøye og forsikre deg om at du forstår dem før du bruker enheten og oppbevar dem for senere bruk.

Tärkeätä tietoa:

Lue nämä ohjeet huolellisesti ja varmista että olet ymmärtänyt ne, ennen kuin alat käyttää laitetta. Säilytä ohjeet myöhempää tarvetta varten.

ENGLISH

SVENSKA

NORSK

SUOMI

ART.NO.	MODEL
40-6002	YT9231	Ver. 200812

Grass Trimmer Cotech 1 hp/0.74 kW

ART.NO.: 40-6002 MODEL: YT9231

Please read the entire instruction manual before using the product and save it for future reference. We reserve the right for any errors in the text or images and any necessary changes made to technical data. If you have any questions regarding technical problems please contact our Customer Services (see address on reverse).

Contents
Safety...............................................	3
Product Description..........................	5
Assembly..........................................	6
Fuel and Lubrication.........................	9
Starting the Engine........................	10
Operation........................................	12
Care and Maintenance....................	13
Storage............................................	15
Troubleshooting Guide ...................	15
Disposal..........................................	16
Specifications.................................	16

Safety

Product safety symbols and their meaning

Wear protective head gear, protective eyewear/visor and ear defenders.

Wear protective gloves.

Wear safety footwear.

Read the entire instruction manual.

Stones and other debris can be ejected by the trimmer.

Do not permit anyone else to come close to the trimmer when it is in use. Children, pets and bystanders should keep a distance of at least 15 metres away from the trimmer when it is being used.

The product is only intended for use with trimmer line. Never use a brush cutter blade or other accessories.

Maximum shaft speed

Caution! Hot surface.

ENGLISH

Safety Instructions

	ENGLISH	1.	Wear protective footwear, tight-fitting clothes and safety glasses/visor, ear defenders and a helmet.
		2.	Never use the grass trimmer if you are tired, sick, upset or under the influence of medication which
			causes drowsiness. Do not use the trimmer whilst under the influence of drugs, alcohol or medicine.
		3.	Fuel safety
			- Always be careful when handling fuel. Open the fuel tank carefully and release any pressure which
			might have built up in the tank. Wipe off any spilt fuel and move the grass trimmer at least 3 metres
			away from the refuelling location before starting it.
			- Remove any sources of ignition, sparks, open flames, lit cigarettes, etc. from the area where the fuel
			is mixed, used or stored.
			- Do not smoke while refuelling or using the grass trimmer.
		4.	Do not permit anyone other than the operator to come close to the grass trimmer when it is being started
			or used. Children, pets and bystanders should keep a distance of at least 15 metres away from the grass
			trimmer when it is being used.
		5.	Always hold both handles of the grass trimmer firmly with your fingers on one side of the handle and
			thumb on the other side, once the engine is running.
		6.	Keep all body parts away from the trimmer line when the engine is running.
		7.	Make sure that the trimmer line is not in contact with any object before starting.
		8.	Only transport the trimmer with the engine switched off.
		9.	Always inspect the trimmer before starting it. Do not start it if there are worn, missing or damaged parts.
			Never use the grass trimmer if it is damaged, incorrectly adjusted or incorrectly assembled.
		10.	All service other than that mentioned in this instruction manual should be carried out by qualified personnel.
		11.	Switch off the grass trimmer before laying it on the ground.
		12.	Be extra vigilant when cutting small bushes or thick grass. They can become stuck in the trimmer head.
		13.	Keep the handles clean, dry and free from oil or fuel.
		14.	Only use the trimmer outdoors or in well ventilated areas. Never start the trimmer in a closed room or
			building. Exhaust fumes contain carbon monoxide and are dangerous to inhale.
		15.	Avoid running the trimmer head near small objects which can be ejected. Check the work area is clear of
			small stones, debris, etc. before beginning.
		16.	Always stand below the trimmer if you are using it on a slope. Never use the trimmer on a slope if there
			is the slightest risk of you losing your footing, falling or sliding.
		17.	Keep the trimmer clear of grass cutting build-up and other deposits. Particularly the guard trimmer head
			and engine.
		18.	The grass trimmer must only be used by adults who have read the instruction manual.
		19.	Use only two-stroke fuel mixed with 2.5% good quality two-stroke oil (40:1) designed for air-cooled two-stroke
			engines. Using petrol without the addition of oil can lead to engine damage not covered by the guarantee.
		20.	Do not use the grass trimmer without the silencer or silencer cover.
		21.	Hold both handles of the grass trimmer firmly, with your fingers on one side of the handle and thumb
			on the other.
		22.	The silencer becomes extremely hot. Keep your hands and other body parts out of the way.
		23.	The trimmer head should not be lifted up during work since the trimmer line can injure the user. Work as
			close to the ground as possible.
		24.	The grass trimmer must not be used for any other purpose than for the trimming of lawns and gardens.
		25.	The grass trimmer must not be used if the guard is damaged or missing.
		26.	This product must not be altered or used for other tasks since the risk of accident will increase and the
			guarantee will not be valid.
		27.	Do not use the grass trimmer close to flammable gases and liquids since this could cause a fire or lead
			to an explosion.

Product Description

11 13

14

16

7 10

9

12

4

15

8

6

5

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		19
1	20	17
2	3

1.	Trimmer head	11.	Spark plug
2.	Trimmer head locking knob	12.	Fuel tank
3.	Trimmer guard	13.	Air filter cover
4.	Upper shaft	14.	Pull start handle
5.	Shaft coupler	15.	Primer pump
6.	Lower shaft	16.	Choke lever
7.	Loop handle	17.	Carry strap
8.	Throttle	18.	Trimmer spanner
9.	ON/OFF Switch (1/0)	19.	Allen key
10.	Safety lock	20.	Spark plug wrench

ENGLISH

ENGLISH

Assembly

Assembling the loop handle and the lower shaft

1. Remove the protective rubber cap on the upper shaft.

2. Thread the loop handle (7) onto the shaft and tighten the locking screw.

7

3. Thread the shaft coupler (5) onto the upper shaft until the screw hole is lined up with the hole in the shaft.

5

4. Tighten the screws and fasten the coupler in place by tightening the clamp using an Allen key.

ENGLISH

5.Remove the protective rubber cap on the end of the lower shaft.

6.Press and hold in the release catch on the coupler (5). Insert the lower shaft into the coupler and release the catch into the desired hole. There are three holes to allow the trimmer head to be set at three different angles.

5

7. Lock the shafts together by tightening the locking knob on the coupler.

ENGLISH

Mounting the trimmer guard

Warning! The trimmer guard must be mounted correctly in order to protect the user and so that the trimmer line will be the correct length. The guard contains a blade which automatically cuts off the line to an appropriate length when the trimmer head begins rotating.

1.The trimmer head must be taken off before the trimmer guard is mounted.

2.Hold the trimmer head and use your hand or the enclosed spanner to undo the trimmer head nut.

3.Remove the trimmer head from the spindle.

4.Slide the trimmer guard over the shaft and align the holes in the guard with holes in the bracket. (See fig above.)

5.Push in the bolt through the trimmer guard from the side with the hexagonal countersink. Tighten the bolt using the washer and nut.

6.Reassemble the trimmer head onto the spindle.

Fuel and Lubrication

Caution! Petrol is highly flammable. Avoid smoking near any area where fuel will be handled. Do not introduce open fires, embers or sparks into the area. Switch off the grass trimmer and let it cool before refuelling it. Refuel outdoors and always move at least 3 metres away from the refuelling site before starting the trimmer.

Mix petrol (unleaded 95 octane without added ethanol) with a good quality 2-stroke oil intended for air-cooled 2-stroke engines.

Recommended mixture: Petrol/oil 40:1 (2.5 %)

•The engine is designed to be used with unleaded fuel.

•Use at least an 87 rated octane fuel.

•Use unleaded fuel to protect the environment and your health.

•Bad quality fuel or oil can damage seals, fuel pipes or the fuel tank.

Mixing the fuel

N.B. Be precise with the mixture.

1.Measure out the petrol and oil precisely before mixing.

2.Pour a small amount of the petrol into a clean approved fuel container.

3.Pour in all of the oil and agitate the fuel can.

4.Pour in the rest of the petrol and agitate the fuel can for at least a minute. Some oils are difficult to mix. It is therefore important to agitate the container in order for the oil and petrol to mix thoroughly. The engine will last longer if the fuel is well mixed, if the fuel is not mixed properly the mixture will be too lean and the engine may be damaged.

5.Label the fuel can clearly to avoid the risk of misidentification.

6.Fuel containing oil is only intended for 2-stroke engines. Pure petrol is for 4-stroke engines. It is therefore very important to label fuel containers clearly.

N.B. Do not mix too much fuel; it should be used within 90 days.

Caution! Only use fuel containing oil for 2-stroke engines, using pure petrol without the addition of oil will inevitably cause engine damage which is not covered by the guarantee.

Fueling the trimmer

1.Let the trimmer cool before refuelling it.

2.Unscrew and remove the fuel cap.

3.Fill with fuel until the tank is roughly 80% full.

4.Replace and tighten the fuel cap and wipe up any spilt fuel on or around the grass trimmer.

ENGLISH

ENGLISH

Starting the Engine

N.B. Pull the starter handle straight out. If you pull at an angle the starter cord will rub on the sleeve and wear out prematurely. Keep hold of the starting handle after pulling it and allow it to return slowly. Never release the starter handle completely at full length since it can become entangled and the backlash can break something on the trimmer.

N.B. See the Troubleshooting section if the trimmer doesn’t start after several attempts.

Starting a cold engine

Cut the trimmer line to a length of 13 cm before starting to reduce the load while		13 cm
the trimmer warms up.
1.	Place the grass trimmer on a level surface.
2.	Set the on/off switch to position 1.
3.	Set the choke lever (17) to cold start mode (upwards).

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4.Press the primer pump (15) 10 times.

5.Hold the upper handle firmly while simultaneously pressing and holding in the safety lock and throttle.

6.Pull the starter handle until you feel some resistance (approx. 100 mm) Pull the starter handle quickly and smoothly until the engine starts or up to 4 times.

7.Set the choke lever to the open position (downwards) as soon as the engine starts.

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Starting a warm engine

	1.	Place the grass trimmer on a level surface.			ENGLISH
	2.	Set the on/off switch to position 1.
	3.	Hold the upper handle firmly while simultaneously pressing and holding in the safety lock and throttle.

4.Pull the starter handle until you feel some resistance (approx. 100 mm) Pull the starter handle quickly and smoothly until the engine starts or up to 4 times.

5.If the engine doesn’t start repeat all steps in the Starting a cold engine section.

Shutting off the engine

Release the throttle and let the engine idle. Set the on/off switch to the 0 position.

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ENGLISH

Operation

Helpful Suggestions

•Caution! Remove all objects like cans, bottles, stones, etc. from the ground before using the trimmer. They can be thrown about by the trimmer and cause injury or damage the trimmer.

•Caution! Never raise the trimmer head above knee-height while it is spinning.

•Caution! Never use metal or plastic coated metal trimmer line, this could cause serious accidents.

•Switch off the grass trimmer at once and check it for damage if you notice that something is ejected or if the grass trimmer starts vibrating. Inspect the trimmer for any damage. Do not use the grass trimmer if it has been damaged.

•Allow the engine to come up to full speed before starting to cut the grass. Never attempt to trim grass at low speed.

•Hold the grass trimmer with both hands.

•Hold the trimmer head parallel to the ground and sweep the grass trimmer from side to side whilst slowly walking forwards. Reduce your forward movement if the going gets heavy.

•Do not move the trimmer head towards you, always work away from yourself.

Trimming round trees and bushes

•Lean the trimmer head forward slightly and start trimming from left to right whilst slowly walking around the tree.

•Be careful, so the trimmer line doesn’t cut the bark of the tree or the plants that you want to keep!

•If you trim grass close to fences, foundations, rocks, etc; the trimmer line will soon wear out.

Preparing the ground (removing all vegetation)

•Angle the trimmer head approx. 30 degrees to the left (it is easier if you loosen the loop handle and adjust it) See figure.

•Do not do this if there is the slightest risk of something being flung up and injuring people or animals standing within a 30-metre radius.

Feeding out the line

Feed out the trimmer line like this:

1.Let the engine come up to top speed. Tap the trimmer head on the ground and lift it up again. The line will feed automatically.

2.The line will be cut to the correct length by the cutter blade under the trimmer guard.

3.Turn off the engine and use e.g. a screwdriver to remove any grass or other deposits that may have built up between the guard and trimmer head. Debris caught between the guard and trimmer head can reduce the ability of the driveshaft to cool properly.

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Care and Maintenance

Warning! Disconnect the sparkplug lead before carrying out any maintenance.

A.Locking cap

B.Spool

C.Spring

D.Spindle

E.Housing

F.Line slot

G.Line holes

H.Trimmer line

Changing the line

1.Turn the locking cap (A) anti-clockwise and remove it either by hand or using the supplied spanner.

2.Remove the spool (B) and the spring (C) from the spindle (D).

3.Remove the existing trimmer line (H).

4.First measure then cut an 8.6-metre length of trimmer line (Ø 2 mm). Fold it in the middle so that you have two ends measuring 4.3 metres; place the middle of the fold in one of the slots in the disc dividing the spool.

5.Wind both ends of the line around the spool clockwise figure 21. Hold the

line with your fingers while winding, keeping the line taut. Stop when about 15 cm of the line remains.

6.Press the ends of the line into the slots

(F)on opposite sides of the spool.

7.Push in the spring (C) on the bottom of the spool (if not already secure), pull the ends of the line through the holes

(G)in the side of the housing (E).

8.Push the spool (B) into the housing whilst feeding the ends of the line through the holes (G).

9.Press the spool (B) inwards so that the spring becomes compressed. Tug the line, freeing them from the line slots

(F)in the spool.

10.Push the assembled trimmer head securely onto the spindle and hold it in position. Tighten the locking cap (A) clockwise (only finger-tight).

11.Cut the ends of the line so they are no longer than 13 cm.

ENGLISH

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ENGLISH

Inspecting and cleaning the air filter

Never use the grass trimmer without an air filter. Clean or replace the filter if it is damaged or dirty. Clean the air filter like this:

1.Unscrew the locking screw and remove the cover.

2.Remove the foam filter from the cover.

3.Wash the filter with soap and water. Do not use petrol!

4.Squeeze the filter and let it dry naturally.

5.Replace the filter and reattach the cover.

Carburettor settings
The carburettor has been factory adjusted for optimum power.	0,635 mm
Spark plug
Spark plug: TORCH L8RTC, Champion CJ7Y, NGK BPMR7A.
Recommended spark plug gap: 0.635 mm.
Tightening torque: 12 – 15 Nm.

Sharpening the cutter blade (on the guard)

1.Remove the cutter (E) from the trimmer guard (F).

2.Hold the cutter in a vice. Sharpen the blade using a flat file, sharpening in one direction only and making sure to maintain the original grinding angle.

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Storage

	1.	Clean the exterior of the grass trimmer.	ENGLISH
	2.	Transfer any fuel remaining in the fuel tank to a petrol container.
	3.	Start the engine when the fuel tank has been emptied.
	4.	Allow the engine to idle until it cuts out to empty the carburettor of fuel.
	5.	Allow the engine to cool for 5 minutes.
	6.	Use a spark plug socket to remove the spark plug.
	7.	Pour one teaspoon of pure 2-stroke oil into the cylinder via the spark plug hole, pull the starter handle
		slowly a few times to distribute the oil evenly over the inside of the engine. Replace the spark plug.
	8.	Store the grass trimmer in a dry and well ventilated place.

Using the trimmer after storage

1.Use a spark plug socket to remove the spark plug.

2.Pull the starter handle quickly and smoothly a few times to remove the surplus oil from the cylinder.

3.Clean the spark plug electrodes or replace the spark plug with one having the correct plug gap.

4.Tighten the spark plug using a spark plug socket.

5.Fill the fuel tank.

6.Follow the instructions in the Starting a cold engine section.

Troubleshooting Guide

	Problem	Possible Cause	Solution
	The engine won’t start or	Incorrect starting procedure	Read the instruction manual
	only runs at low speed
		Dirt in the carburettor	Allow a qualified technician to clean
			the carburettor
		Faulty spark plug	Clean or change the spark plug
		Clogged fuel filter	Change the fuel filter (inside the fuel tank)
	The engine starts but with	Wrong choke setting	Set the choke to OPEN
	loss of power
		Dirty air filter	Clean or change the air filter
		Dirt in the carburettor	Allow a qualified technician to clean
			the carburettor
	The engine doesn’t	The engine is not adequately	Allow the engine to idle for a minute
	respond to the throttle	warmed up
	Loss of power under load	Incorrect spark plug gap	Clean and check the gap or change the
			spark plug.
	The engine runs irregularly	Dirt in the carburettor	Allow a qualified technician to clean
			the carburettor
	The engine	Incorrect fuel mixture	Use petrol and 2-stroke oil with
	produces smoke		a 40:1 (2.5%) ratio

N.B.

The grass trimmer conforms to current safety requirements. Repairs to the grass trimmer should always be carried out using original spare parts and by a qualified technician, failure to do so may result in injury.

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ENGLISH

Disposal

Follow local ordinances when disposing of this product. If you are unsure of how to dispose of this product, please contact your municipality.

Specifications

Model:	YT9231
Dry weight:	5.5 kg
Motor:	Air-cooled 2-stroke engine
Fuel:	Mixture of petrol & oil 40:1 (2.5 %)
Cylinder volume:	25 cm³
Cutting width:	38 cm
Ignition:	Electronic
Max engine output:	0.74 kW at 7500 rpm
Operating speed:	7000-8500 rpm
Max engine speed:	8500 rpm
Tickover speed:	3500 rpm
Spark plug:	TORCH L8RTC, Champion CJ7Y, NGK BPMR7A
Tank capacity:	0.45 litres
Shaft length:	132 cm
Cutting line:	Nylon line Ø 2 mm, double lines
Sound:	LwA:	102 dB (A)
	LpA:	88 dB (A)
Vibration:	Front handle:	7.38 m/s²
	Rear handle:	5.68 m/s²

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Grästrimmer Cotech 1 hk/0,74 kW

ART.NR: 40-6002

MODELL: YT9231

Läs igenom hela bruksanvisningen före användning och spara den sedan för framtida bruk. Vi reserverar oss för ev. textoch bildfel samt ändringar av tekniska data.

Vid tekniska problem eller andra frågor, kontakta vår kundtjänst (se adressuppgifter på baksidan).

Innehållsförteckning
Säkerhet..........................................	17
Produktbeskrivning.......................	19
Montering.......................................	20
Bränsle och smörjning...................	23
Start av motor.................................	24
Användning.....................................	26
Skötsel och underhåll....................	27
Förvaring........................................	29
Felsökningsschema........................	29
Avfallshantering.............................	30
Specifikationer...............................	30

Säkerhet

Produktmärkning med säkerhetssymboler på maskinen

Använd skyddshjälm, skyddsglasögon/visir och hörselskydd.

Använd skyddshandskar.

Använd skyddsskor.

Läs hela bruksanvisningen.

Stenar och andra föremål kan kastas iväg av grästrimmern.

Tillåt ingen annan än användaren vara nära grästrimmern när den används. Barn, husdjur och åskådare skall befinna sig på ett avstånd av minst 15 meter från grästrimmern när den används.

Produkten är endast avsedd för att användas med trimmerlina. Använd aldrig sågklinga eller andra tillbehör.

Maximalt varvtal för riggrör.

Varning! Het yta.

SVENSKA

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Säkerhetsinstruktioner

	1.	Använd skyddsskor, åtsittande kläder och skyddsglasögon/visir, hörselskydd och hjälm.
	2.	Använd aldrig grästrimmern om du är trött, sjuk, upprörd eller under påverkan av mediciner som gör dig
		trött. Använd den inte heller om du är påverkad av alkohol eller droger.
	3.	Bränslesäkerhet
		- Var alltid aktsam vid hantering av bränsle. Öppna tanklocket försiktigt och släpp ut trycket som
		kan ha uppkommit i tanken. Torka upp allt spill och flytta sedan grästrimmern minst 3 meter från
SVENSKA		tankningsplatsen innan den startas.
		- Avlägsna alla antändningskällor, gnistor, öppen låga, tobaksrökning etc. från platser där bränsle
		blandas, hanteras eller förvaras.
		- Rök inte under tankning eller under arbete med grästrimmern.
	4.	Tillåt ingen annan än användaren vara nära grästrimmern vid start eller arbete med den. Barn, djur och
		åskådare skall vara på ett avstånd av minst 15 meter från grästrimmern när den används.
	5.	Håll alltid grästrimmern stadigt i båda handtagen med fingrarna på en sida av handtaget och tummen på
		andra sidan när motorn är startad.
	6.	Håll undan alla kroppsdelar från trimmerlinan när motorn går.
	7.	Kontrollera före start att trimmerlinan inte har kontakt med något föremål.
	8.	Transportera endast grästrimmern med motorn avstängd.
	9.	Inspektera alltid grästrimmern före start. Starta den inte om det finns utslitna, saknade eller skadade
		delar. Använd aldrig en grästrimmer som är skadad, feljusterad eller som inte är monterad på rätt sätt.
	10.	All annan service på grästrimmern än de som nämns i bruksanvisningen ska utföras av kvalificerad personal.
	11.	Stäng av grästrimmern innan den läggs ner på marken.
	12.	Var extra uppmärksam när du kapar små buskar eller tjockt gräs som kan fastna i trimmerhuvudet.
	13.	Håll handtagen rena, torra och fria från olja eller bränsle.
	14.	Använd grästrimmern endast utomhus eller i väl ventilerade lokaler. Starta den aldrig i ett stängt rum
		eller byggnad. Avgaserna innehåller koloxid och är farliga att andas in.
	15.	Undvik att föra trimmerhuvudet nära små föremål som kan kastas iväg. Kontrollera innan arbetet
		påbörjas ifall det finns småstenar etc. på ytan som ska trimmas.
	16.	Stå alltid nedanför trimmern om du använder den på lutande mark. Använd aldrig trimmern på lutande
		mark om det finns den minsta risk att du tappar fotfästet, ramlar eller glider ner.
	17.	Håll grästrimmern ren från gräsrester och andra beläggningar. Var särskilt noga med skydd,
		trimmerhuvud och motor.
	18.	Grästrimmern får endast användas av vuxna personer som har läst bruksanvisningen.
	19.	Använd endast tvåtaktsbränsle med inblandning av 2,5 % tvåtaktsolja (40:1) avsedd för luftkylda
		tvåtaktsmotorer av god kvalitet. Användning av bensin utan oljeinblandning leder snabbt till motorskador
		som inte omfattas av garantin.
	20.	Använd inte grästrimmern utan ljuddämpare eller ljuddämparkåpa.
	21.	Håll i grästrimmerns båda handtag på ett säkert sätt med fingrarna på en sida av handtaget och tummen
		på andra sidan.
	22.	Ljuddämparen blir mycket het. Håll undan händer och andra kroppsdelar.
	23.	Trimmerhuvudet får inte lyftas upp under arbetet eftersom trimmerlinan kan skada användaren.
		Arbeta så nära marken som möjligt.
	24.	Grästrimmern får inte användas till något annat ändamål än trimning av gräsmattor och trädgårdar.
	25.	Grästrimmern får inte användas om skyddet saknas eller är skadat.
	26.	Produkten får inte ändras och/eller användas för andra arbetsmoment eftersom risken för olycksfall ökar
		och garantin inte gäller.
	27.	Använd inte grästrimmern i närheten av brännbara gaser och vätskor eftersom det kan leda till brand
		eller explosion.

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