Yard-Man YM90BC Operator'S Manual Download Page 10

10

OPERATING INSTRUCTIONS

Fig. 24

DECORATIVE TRIMMING

Decorative trimming is accomplished by removing all vegetation
around trees, posts, fences and more.  Rotate the whole unit so
that the cutting attachment is at a 30° angle to the ground (Fig. 24).

USING THE CUTTING BLADE

WARNING: 

Always wear eye, hearing, foot, body

protection and the shoulder strap to reduce the risk
of injury when operating this unit.

Fig. 25

Before operating the unit with the cutting blade, stand in the
operating position (Fig. 25). Refer to 

Holding the Trimmer

.

WARNING: 

Do not use the cutting blade for

edging or as an edger. Severe personal injury to
yourself or others can result.

NOTE:

Do not rest the Bump Head™ on the ground while the
unit is running.

Some line breakage will occur from:
• Entanglement with foreign matter
• Normal line fatigue
• Attempting to cut thick, stalky weeds
• Forcing the line into objects such as walls or fence posts

CAUTION: 

Do not remove or alter the line cutting

blade assembly. Excessive line length will make the
clutch overheat. This may lead to serious personal
injury or damage to the unit.

ADJUSTING TRIMMING LINE LENGTH

The Bump Head™ cutting attachment allows you to release
trimming line without stopping the engine. To release more line,
lightly tap the cutting attachment on the ground (Fig. 23) while
operating the trimmer at high speed.

NOTE

: Always keep the trimming line fully extended. Line release

becomes more difficult as the cutting line becomes shorter.

Fig. 23

Each time the head is bumped, about 1 inch (25.4 mm) of trimming
line is released. A blade in the cutting attachment shield will cut the
line to the proper length if excess line is released.  For best results,
tap the Bump Head™ on bare ground or hard soil. If line release is
attempted in tall grass, the engine may stall. Always keep the
trimming line fully extended. Line release becomes more difficult
as the cutting line becomes shorter.

HOLDING THE TRIMMER

Before operating the unit, stand
in the operating position (Fig.
22). Check for the following:
• The operator is wearing eye

protection and proper
clothing

• With a slightly-bent right arm,

the operator’s right hand is
holding the shaft grip

• The operator’s left arm is

straight, the left hand
holding the J-handle

• The unit is at waist level
• The cutting attachment is

parallel to the ground and
easily contacts the grass
without the need to bend over 

Once you are in the operating
position, hook the shoulder
strap to the unit.

WARNING: 

Always wear eye, hearing, foot and

body protection to reduce the risk of injury when
operating this unit.

Fig. 22

TIPS FOR BEST TRIMMING RESULTS

• For best trimming results, operate unit at full throttle.
• Keep the cutting attachment parallel 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 overload the engine.

• Cut grass over 8 inches (200 mm) by working from top to bottom

in small increments to avoid premature line wear or engine drag.

• Cut from left to right whenever possible. Cutting to the right

improves the unit's cutting efficiency. Clippings are thrown
away from the operator.

• Slowly move the trimmer into and out of the cutting area at the

desired height. Move either in a forward-backward or side-to-
side motion. Cutting shorter lengths produces the best results.

• Trim only when grass and weeds are dry.
• The life of your cutting line is dependent upon:

— Proper adherence of trimming techniques (explained above)
— What vegetation is cut
— Where vegetation is cut

For example, the line will wear faster when trimming against a
foundation wall as opposed to trimming around a tree.

Summary of Contents for YM90BC

Page 1: ...E For users on U S 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 re...

Page 2: ...lines extended and the proper line installed Do not extend the trimming line beyond the length of the shield This unit has a clutch The cutting attachment remains stationary when the engine is idling...

Page 3: ...other users If you loan someone this unit also loan them these instructions SAVE THESE INSTRUCTIONS RULES FOR SAFE OPERATION SAFETY AND INTERNATIONAL SYMBOLS This operator s manual describes safety an...

Page 4: ......

Page 5: ...attachment shield should NOT be installed when operating the unit with a blade Remove the cutting attachment shield before removing or installing the blade WARNING Always use the shoulder harness whe...

Page 6: ...ibrate and the blade may fly off causing possible serious personal injury Fig 12 Pilot Step 6 Align the shaft bushing hole with the locking rod slot and insert the locking rod into the bushing hole Fi...

Page 7: ...tallation or removal easier 1 Turn knob counterclockwise to loosen Fig 16 Fig 16 EZ Link Coupler Release Button Guide Recess Knob Primary Hole Upper Shaft Housing EZ Link Coupler 2 While firmly holdin...

Page 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 old fuel oil mix in accordance...

Page 9: ...tly different from and much easier than what you may be used to 5 Place the blue choke lever in Position 2 Fig 20 6 While squeezing the throttle lock out and throttle control pull the starter rope out...

Page 10: ...se is attempted in tall grass the engine may stall Always keep the trimming line fully extended Line release becomes more difficult as the cutting line becomes shorter HOLDING THE TRIMMER Before opera...

Page 11: ......

Page 12: ...Fill fuel tank with fresh fuel Page 8 Every 10 hours Clean and re oil air filter Page 14 Every 25 hours Check and clean spark arrestor Check spark plug condition and gap Page 14 Page 15 Every 50 hours...

Page 13: ...nd the line in tight even layers in the direction indicated on the inner reel NOTE Failure to wind the line in the direction indicated will cause the cutting attachment to operate incorrectly 12 Inser...

Page 14: ...g the Air Filter Muffler Cover 1 Place the air filter muffler cover over the back of the carburetor and muffler Align the screw holes 2 Insert the four 4 screws into the holes in the air filter muffle...

Page 15: ...l it stalls This ensures that all fuel has been drained from the carburetor 3 Allow the engine to cool Remove the spark plug and put 1 oz 30 ml of any high quality motor oil or 2 cycle oil into the cy...

Page 16: ...buretor Adjustments section or take to an authorized service dealer for an adjustment Fouled spark plug Replace or clean the spark plug Plugged spark arrestor Clean or replace spark arrestor C A U S E...

Page 17: ...r Diaphragm All Position Starter Auto Rewind Muffler Baffled with Guard Throttle Manual Spring Return Fuel Tank Capacity 13 oz 384 ml Drive Shaft Housing Steel Tube EZ Link Throttle Control Finger Tip...

Page 18: ...an LLC Yard Man with respect with new merchandise purchased and used in the United States its possessions and territories Yard Man warrants this product against defects in material and workmanship for...

Page 19: ...res des tats Unis et dans les tats de Californie du Maine de l Or gon et de Washington Toutes les terres foresti res des tats Unis et de l tat de Californie Codes sur les ressources publiques 4442 et...

Page 20: ...et pais des bottes des gants et une chemise manches longues Ne portez pas de v tements amples de bijoux de pantalons courts de sandales et ne soyez pas pieds nus Veillez ce que vos cheveux restent au...

Page 21: ...s une zone s che verrouill e ou hors de la port e des enfants Ne mouillez ou ne pulv risez jamais d eau ou tout autre liquide sur l appareil Veillez ce que les poign es restent s ches propres et d pou...

Page 22: ...arrage Protecteur de lame Mat riel de montage du protecteur Lame broussailles avec couvercle Lame coupante Silencieux Raccord de soutien EZ LinkMC Couvercle du filtre air silencieux APPLICATIONS Utili...

Page 23: ...Retirer l accessoire de coupe 1 Alignez le trou de la bague de l arbre avec la fente de la tige de blocage puis ins rez la tige dans le trou de la bague Fig 8 3 vis Protecteur d accessoire de coupe Su...

Page 24: ...otecteur d accessoire de coupe Support du protecteur Tige de blocage Lame de coupe Retenue de la lame crou Bague de l arbre de sortie Trou de guidage Fig 11 Installer la lame de coupe 4 Placez la lame...

Page 25: ...la s curit qui y figurent AVERTISSEMENT pour viter des blessures graves teignez l appareil avant d enlever ou d installer des accessoires Retrait de l accessoire de coupe ou autre 1 D vissez le bouto...

Page 26: ...r 4 litres 1 gallon de carburant selon les instructions du r cipient N ajoutez JAMAIS d additifs directement dans le r servoir de l appareil REMARQUE liminez le vieux m lange de carburant conform ment...

Page 27: ...us facile de celles auxquelles vous tes habitu 5 Placez le levier d tranglement bleu en position 2 Fig 20 6 Tandis que vous pressez la d verrouilleur de manette des gaz et la manette des gaz et tirez...

Page 28: ...t en arri re ou d un c t l autre Les coupes de longueur plus courte donnent les meilleurs r sultats Ne d sherbez que lorsque l herbe et les mauvaises herbes sont s ches La dur e de vie de votre fil de...

Page 29: ...e ce que l accessoire de coupe soit un angle de 30 par rapport au sol Fig 24 UTILISATION DE LA LAME DE COUPE Avant de faire marcher l appareil tenez vous en position de fonctionnement Fig 25 Voir Tenu...

Page 30: ......

Page 31: ...us petit possible Fig 33 10 Avant de rembobiner le fil s parez le en deux sur une longueur d environ 15 cm 6 po 11 Enroulez le fil en couches uniformes serr es dans le sens indiqu sur le moulinet int...

Page 32: ...i il risque de tomber et d endommager l outil et de causer des blessures graves 3 Soulevez gentiment la couverture du pare tincelles du c t gauche Deux pattes servent de charni res sur le c t droit de...

Page 33: ...Laissez le moteur refroidir avant de l entreposer Rangez l appareil dans un lieu verrouill pour viter toute utilisation ou accident ind sirable Rangez l appareil dans un lieu sec et bien a r Rangez l...

Page 34: ...oire de coupe engorg d herbes Arr tez le moteur et nettoyez l accessoire Filtre air sale Remplacez ou nettoyez le Pare tincelles colmat Nettoyez ou remplacez le pare tincelles C A U S E S O L U T I O...

Page 35: ...le 40 1 Carburateur Membrane toutes positions D marreur Rembobinage automatique Silencieux Chicane avec protection Acc l rateur Rappel manuel Capacit du r servoir de carburant 384 ml 13 oz Logement de...

Page 36: ...19 La garantie limit e nonc e ci apr s est accord e par Yard Man LLC Yard Man et concerne les marchandises neuves achet es et utilis es aux tats Unis ainsi que dans leurs possessions et territoires Ya...

Page 37: ...de los EE UU y en los estados de California Maine Oregon y Washington Todos los terrenos forestales de los EE UU y el estado de California C digos de Recursos P blicos 4442 y 4443 Oregon y Washington...

Page 38: ......

Page 39: ...s ni os Nunca roc e ni chorree la unidad con agua ni ning n otro l quido Mantenga las manijas secas limpias y libres de escombros L mpiela despu s de usarla vea las instrucciones de Limpieza y Almacen...

Page 40: ...as Fig 2 6 Mientras sostiene la unidad en posici n de operaci n Fig 3 coloque la manija en J en la posici n que le brinde el mejor agarre 7 Ajuste los tornillos de la abrazadera en forma pareja hasta...

Page 41: ...stago plano Fig 7 REMOCI N DEL ACCESORIO DE CORTE E INSTALACI N DE LA CUCHILLA DE CORTE NOTA Para facilitar la remoci n o la instalaci n de la cuchilla de corte coloque la unidad sobre el suelo o sobr...

Page 42: ...cuchilla est bien instalada luego gire la tuerca 1 4 a 1 2 vuelta m s en sentido antihorario Fig 13 Fig 14 5 Verifique que la cuchilla de corte est centrada en el estribo de gu a y quede plana contra...

Page 43: ...cta en el acoplador EZ Link Fig 17 NOTA La alineaci n del bot n de desconexi n con el hueco de gu a facilitar la instalaci n Fig 16 Acoplador EZ Link Bot n de desconexi n Hueco de gu a Perilla Orifici...

Page 44: ...nstrucciones del envase NUNCA agregue aditivos directamente en el tanque de combustible de la unidad Mezcle bien la proporci n correcta de aceite para motor de 2 ciclos y gasolina sin plomo en una lat...

Page 45: ...o m s f cil del que usted pudiera estar acostumbrado a usar 5 Coloque la palanca azul del obturador en la Posici n 2 Fig 20 6 Mientras oprime la control del regulador y traba del regulador hale de la...

Page 46: ...tra o Fatiga normal de la l nea Intentar cortar hierbas gruesas y le osas Forzar la l nea en objetos como paredes o postes de cercos CONSEJOS PARA OBTENER MEJORES RESULTADOS AL RECORTAR Para mejores r...

Page 47: ...l en la cuchilla siga estos pasos Corte a plena regulaci n Mueva la unidad de su izquierda a derecha hacia el material que va a cortar Fig 26 En el movimiento de retorno evite tocar el material que ac...

Page 48: ...illa del parachispas est n tupidas u obstruidas para garantizar los niveles m ximos de rendimiento P gina E19 INSTALACION DE LA LINEA Esta secci n cubre la instalaci n de la l nea SplitLine y de la l...

Page 49: ...l nea de corte en la unidad La l nea puede no soltarse en forma adecuada si es demasiado larga Instalaci n de la l nea individual Lea la instalaci n de la l nea SplitLine en el paso 8 6 Tome aproximad...

Page 50: ...alanca azul del obturador Fig 36 Limpieza del Filtro de Aire Limpie y vuelva a aceitar el filtro de aire cada 10 horas de operaci n Es una de las partes cuyo mantenimiento es importante No mantener de...

Page 51: ...r la unidad Guarde la unidad 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 ALMA...

Page 52: ...hacer un ajuste de carburador El accesorio de corte est atascado de hierba Pare el motor y limpie el accesorio de corte El filtro de aire est sucio Limpie o cambie el filtro de aire Parachispas obstru...

Page 53: ...posicional Arranque Rebobinado autom tico Silenciador Desviado con protecci n Regulador Retroceso manual a resorte Capacidad del tanque de combustible 384 ml 13 onzas Bastidor del eje impulsor Tubo de...

Page 54: ...2 18 15 16 17 19 34 35 36 22 23 30 24 25 28 26 41 32 21 43 49 45 47 48 9 42 39 38 37 Item Part No Description 1 753 04511 Air Cleaner Cover Assembly includes 2 38 2 791 180350B Air Cleaner Filter 3 79...

Page 55: ...ount Screw Assembly 25 791 182193 2 piece Gearbox Assembly includes 26 29 26 791 182195 Gearbox Mounting Hardware 27 791 182519 Anti Rotation Screw 28 791 182196 Blade Driver 29 753 04348 Palnut 30 79...

Page 56: ...ecida a continuaci n es dada por Yard Man LLC Yard Man con respecto a mercanc a nueva que sea comprada y usada en los Estados Unidos sus posesiones y territorios Yard Man garantiza este producto contr...

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