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6

ment will be used when installing the cutting blade.

Install the Cutting Blade

4.

Place the cutting blade on the output shaft bushing (Fig. 10).

5.

Make sure that the cutting blade is centered on the pilot step
and sitting flat against the output shaft bushing (Fig. 11).

6.

Align the shaft bushing hole with the locking rod slot and
insert the locking rod into the bushing hole (Fig. 7).

7.

Put the blade retainer and nut on the output shaft. Make
sure that the blade is installed correctly. 

8.

Tighten nut counterclockwise against the blade while
holding the locking rod:

• If using a torque wrench and an 13 mm socket, tighten to:

37 - 38 N•m, 325 - 335 in•lb, 27 - 28 ft.•lb.

• Without a torque wrench, use a 13 mm closed-end or

socket wrench, turning the nut until the blade retainer is
snug against the shaft bushing. Make sure that the blade is
installed correctly, then rotate the nut an additional 1/4 to
1/2 turn counterclockwise (Fig. 12).

9.

Remove the locking rod from the locking rod slot.

REMOVE THE CUTTING BLADE AND INSTALL THE CUTTING
ATTACHMENT

Remove the Cutting Blade

1.

Align the shaft bushing hole with the locking rod slot and
insert the locking rod into the bushing hole (Fig. 7).

2.

Hold the locking rod in place by grasping it next to the
boom of the unit (Fig. 13).

3.

While holding the locking rod, loosen the nut on the blade
by turning it clockwise with a
13 mm closed-end or socket
wrench (Fig. 13). 

4.

Remove the nut, blade
retainer and blade. Store the
nut and blade together for
future use in a secure place.
Store out of children’s reach.

Install the Cutting Attachment

5.

Align the shaft bushing hole
with the locking rod slot and insert the locking rod into the
shaft bushing hole (Fig. 7). Place the blade retainer on the
output shaft with the flat surface against the output shaft
bushing as shown in Fig. 14. Screw the cutting attachment
counterclockwise onto the output shaft. Tighten securely.

NOTE:  

The blade retainer must be installed on the output

shaft in the position shown for the cutting attachment
to work correctly.

6.

Remove the locking rod.

7.

Install the cutting attachment shield. Refer to 

Remove and

Install the Cutting Attachment Shield.

ASSEMBLY INSTRUCTIONS

WARNING: 

Do not sharpen the cutting blade.

Sharpening the blade can cause the blade tip to break
off while in use. This can result in severe personal
injury. Replace the blade.

Shield

Mount

Locking Rod

Cutting

Blade

Blade Retainer

Nut

Output Shaft

Bushing

Pilot Hole

Fig. 10

WARNING: 

If the cutting blade is off-center, the

unit will vibrate and the blade may fly off, causing
possible serious personal injury.

Pilot Step

Fig. 11

1/4-1/2 turn

Counterclockwise

Fig. 12

Clockwise

Fig. 13

Cutting Attachment

Locking Rod

Blade Retainer

Output Shaft

Bushing

Fig. 14

WARNING: 

To avoid serious personal injury or

damage to the unit, do not start or operate this unit
with the locking rod in the locking rod slot.

WARNING: 

To avoid serious personal injury,

always wear gloves while handling or installing the
blade.

Summary of Contents for Y780

Page 1: ...Forest Land and in the states of California Maine Oregon and Washington All U S Forest Land and the state of California Public Resources Codes 4442 and 4443 Oregon and Washington require by law that...

Page 2: ...he operator and unit must be in a stable posi tion while starting Refer to the Starting Stopping Instructions Use the right tool Only use this tool for its intended purpose Do not overreach Always kee...

Page 3: ...building where fumes may reach an open flame or spark Allow the engine to cool before storing or transporting Be sure to secure the unit while transporting Store the unit in a dry area locked up or u...

Page 4: ...zer or an equivalent Add 0 8 oz 23 ml of fuel additive per gallon of fuel according to the instructions on the container NEVER add fuel additives directly to the unit s fuel tank NOTE Dispose of the o...

Page 5: ...ment Shield Remove the Cutting Attachment 1 Align the shaft bushing hole with the locking rod slot and insert the locking rod into the shaft bushing hole Fig 7 2 Hold the locking rod in place by grasp...

Page 6: ...h Fig 13 4 Remove the nut blade retainer and blade Store the nut and blade together for future use in a secure place Store out of children s reach Install the Cutting Attachment 5 Align the shaft bush...

Page 7: ...ing the throttle lock out and the throttle control for 15 to 30 seconds to warm up the engine NOTE Engine may take longer to warm up and reach maximum operating speed at colder temperatures NOTE Unit...

Page 8: ...allel to the ground Do not force the cutting attachment Allow the tip of the line to do the cutting especially along walls Cutting with more than the tip will reduce cutting efficiency and may overloa...

Page 9: ...hile in use This can result in severe personal injury to yourself or others Replace the blade Fig 22 MAINTENANCE AND REPAIR INSTRUCTIONS MAINTENANCE SCHEDULE Perform these required maintenance procedu...

Page 10: ...o long Single Line Installation Go To Step 8 for SplitLine Installation 6 Take approximately 5 m 16 feet of new trimming line loop it into two equal lengths Insert each end of the line through one of...

Page 11: ...the line in the direction indicated will cause the cutting attachment to operate incorrectly 12 Insert the ends of the line into the two holding slots Fig 30 13 Insert the ends of the line through th...

Page 12: ...talls on acceleration there is a loss of engine power Have the carburetor adjusted by an authorized service dealer 12 4 Apply enough clean SAE 30 oil to lightly coat the filter Fig 35 5 Squeeze the fi...

Page 13: ...n a dry well ventilated area Store the unit out of the reach of children LONG TERM STORAGE If you plan on storing the unit for an extended time use the following storage procedure 1 Drain all fuel fro...

Page 14: ...asn t pressed enough Press primer bulb fully and slowly 10 times Engine is flooded Use starting procedure with choke lever in position 3 Old or improperly mixed fuel Drain fuel tank and add fresh fuel...

Page 15: ...e Throttle Control Finger Tip Trigger with Lock Out Approximate Unit Weight No gas with cutting attachment shield and handle 7 kg 15 lbs Cutting Mechanism 4 Tooth Cutting Blade Dual String Cutting Hea...

Page 16: ...16 NOTES...

Page 17: ...345 8746 Manufacturer s Warranty Coverage The warranty period begins on the date the engine or equipment is delivered to the retail purchaser The manufacturer warrants to the initial owner and each s...

Page 18: ...s given by MTD LLC MTD with respect with new merchandise purchased and used in the United States its possessions and territories MTD warrants this product against defects in material and workmanship f...

Page 19: ...e amende ou tre tenu responsable si vous ne respectez pas cette r glementation Cet appareil est quip d un pare tincelles en usine Si l cran pare tincelles r f 753 05169 doit tre remplac communiquez av...

Page 20: ...anches longues Ne marchez pas pieds nus et vitez les v tements l ches bijoux pantalons courts et sandales Relevez les cheveux au dessus des paules Le protecteur d accessoire de coupe doit toujours tre...

Page 21: ...u un cylindre chaud Vous pourriez vous br ler Ces pi ces deviennent tr s chaudes l utilisation Elles restes chaudes bri vement apr s l arr t CARBURANT SANS PLOMB Utilisez toujours du carburant sans pl...

Page 22: ...ct attention to the oil and fuel mixing instructions on the 2 cycle oil container Using improperly mixed fuel can severely damage the engine FAMILIARISEZ VOUS AVEC L APPAREIL NOTE Les trous des brides...

Page 23: ...ig 4 4 R glez la longueur en fonction de la taille de l op rateur Tirez la languette pour rallonger ou tirez la bande pour raccourcir Fig 5 RETRAIT ET INSTALLATION DU PROTECTEUR D ACCESSOIRE DE COUPE...

Page 24: ...4 Retirez l crou la retenue de lame et la lame Rangez l crou et la lame ensemble en lieu s r pour un usage ult rieur Gardez hors de port e des enfants Installer l accessoire de coupe 5 Alignez le trou...

Page 25: ...leu en position 1 Fig 16 5 Avec la machine au sol placez un pied sur la plaque m tallique pr vue pour que la machine reste en place Fig 17 Appuyez sur le verrouillage des gaz tandis que vous appuyez s...

Page 26: ...eur porte une visi re et des v tements appropri s Le bras droit est droit et la main tient l arbre par sa prise Le bras gauche est l g rement pli et la main tient la poign e L appareil est au dessous...

Page 27: ...s le moteur teint et peut vous blesser s rieusement si vous la touchez accidentellement AVERTISSEMENT n aiguisez pas la lame de coupe car son extr mit risquerait de casser l usage et causer des blessu...

Page 28: ...eux sur une longueur d environ 15 cm 6 po INSTALLATION DU FIL Cette section couvre l installation de fil SplitLineMC et l installation de fil simple standard Utilisez toujours un fil de remplacement q...

Page 29: ...2 Retournez le couvercle et inspectez l int rieur pour rep rer le filtre air Retirez le filtre air de l int rieur du couvercle du filtre air silencieux Fig 33 11 Enroulez le fil en couches uniformes s...

Page 30: ...arrivez pas le nettoyer compl tement 5 R installez l cran du pare tincelles dans la couverture du pare tincelles de fa on ce qu il soit bien encastr 6 R installez les deux pattes de la couverture dans...

Page 31: ...l appareil plein de carburant dans un lieu o les vapeurs peuvent atteindre une flamme vive ou des tincelles Laissez le moteur se refroidir avant de l entreposer Rangez l appareil dans un lieu verrouil...

Page 32: ...z le r servoir ajoutez du carburant frais Bougie encrass e Remplacez ou nettoyez la Pare tincelles colmat Nettoyez ou remplacez le pare tincelles La temp rature ext rieure est inf rieure 40 F Tirez su...

Page 33: ...mm 0 020 po Lubrification M lange carburant huile Rapport carburant huile 40 1 Carburateur Membrane toutes positions D marreur Rembobinage automatique Silencieux Chicane avec protection Acc l rateur...

Page 34: ...F16 REMARQUES...

Page 35: ...garantie appelez le 1 800 345 8746 Garantie du fabricant La p riode de garantie commence la date o le moteur ou l quipement est livr l acheteur au d tail Le fabricant garantit au propri taire initial...

Page 36: ...eland OH 44136 0019 La garantie limit e nonc e ci apr s est accord e par MTD LLC MTD et concerne les marchandises neuves achet es et utilis es aux tats Unis ainsi que dans leurs possessions et territo...

Page 37: ...tos con las autoridades estatales o locales El incumplimiento de esos requisitos puede responsabilizarle o someterle a la imposici n de una multa Esta unidad fue equipada en la f brica con un parachis...

Page 38: ......

Page 39: ...afilar la cuchilla puede causar que la punta se desprenda mientras est en uso Esto puede dar lugar a graves lesiones personales SEGURIDAD DE LA RECORTADORA Y CORTADORA DE MALEZAS ADVERTENCIA Los obje...

Page 40: ...Elimine la mezcla vieja de aceite y combustible de acuerdo con los reglamentos federales estatales y locales gasolina y oxigenantes como por ejemplo etanol metanol o MTBE ter El combustible mezclado c...

Page 41: ...NSTALACI N DEL PROTECTOR ACCESORIO DE CORTE Saque el protector accesorio de corte cuando use la unidad como cortador de malezas Saque el protector accesorio de corte del montaje del protector retirand...

Page 42: ...plana contra el buje del eje de salida Fig 11 6 Alinee el orificio del buje del eje con la ranura de la varilla de cierre e inserte la varilla de cierre en el orificio del buje Fig 7 7 Coloque el ret...

Page 43: ...ca azul del obturador en la Posici n 1 Figura 7 5 Con la unidad en el suelo ponga un pie en el escal n de metal para mantener la unidad en su lugar Fig 17 Oprima la traba del regulador mientras apriet...

Page 44: ...ierdo est levemente doblado y la mano est sosteniendo la manija La unidad est debajo del nivel de la cintura El accesorio de corte est paralelo al suelo y hace f cil contacto con la vegetaci n que va...

Page 45: ...apagar el motor La cuchilla en deslizamiento puede causarle graves cortes si lo toca en forma accidental ADVERTENCIA No afile la cuchilla de corte Si afila la cuchilla la punta puede desprenderse dur...

Page 46: ...la ADVERTENCIA No use nunca l nea reforzada con metal alambre cadena ni soga etc Estos elementos pueden desprenderse y convertirse en un proyectil peligroso Carrete interior Resorte Bobina exterior B...

Page 47: ...xtremos de la l nea a trav s de los ojalillos de la bobina exterior y coloque el carrete interior con el resorte dentro de la bobina exterior Fig 31 Empuje el carrete interior y la bobina exterior ent...

Page 48: ...ndo el motor est en marcha lenta gire el tornillo de marcha lenta en sentido antihorario E12 INSTRUCCIONES DE MANTENIMIENTO Y REPARACI N Idle Speed Screw Fig 36 6 Cambie el filtro de aire dentro de la...

Page 49: ...bajo llave para prevenir el uso por personas no autorizadas y su da o Guarde la unidad en un rea seca y bien ventilada Guarde la unidad fuera del alcance de los ni os ALMACENAMIENTO PROLONGADO Si pla...

Page 50: ......

Page 51: ...ite 40 1 Carburador Diafragma multiposicional Arranque Rebobinado autom tico Silenciador Desviado con protecci n Regulador Retroceso manual a resorte Capacidad del tanque de combustible 355 ml 12 onza...

Page 52: ...E16 NOTAS...

Page 53: ...idades de la garant a debe llamar al 1 800 345 8746 Cobertura de Garant a del Fabricante El per odo de garant a comienza en la fecha en que el motor o equipo se entrega al comprador minorista El fabri...

Page 54: ......

Page 55: ...181813 Middle Handle Clamp 20 791 181814 Lower Handle Clamp 21 791 181815 Nut 22 753 05179 Throttle Cable 23 791 181817 Flexible Drive Shaft 24 791 182200 Shield Mount Screw Assembly 25 791 182193 2...

Page 56: ...nt a limitada establecida a continuaci n es dada por MTD LLC MTD con respecto a mercanc a nueva que sea comprada y usada en los Estados Unidos sus posesiones y territorios MTD garantiza este producto...

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