Ryobi 4 Cycle S430 Manual

							OPERATOR’S MANUAL
MANUEL D’UTILISATION
MANUAL DEL OPERADOR
30CC 4-CYCLE  
STRING TRIMMERS
TAILLE-BORDURES  
À LIGNE 4 TEMPS DE 30 CC
RECORTADORAS  DE HILO 
DE CUATRO TIMPOS 30 CC
CS — RY34421
SS — RY34441
ALL VERSIONS 
TOUTES LES VERSIONS 
TODAS LAS VERSIONES
C430 
RY34421
S430 
RY34441
Le taille-bordures à ligne a été conçue et fabriquée conformément 
à nos strictes normes de fiabilité, simplicité d’emploi et sécurité 
d’utilisation. Correctement entretenue, elle vous donnera des 
années de fonctionnement robuste et sans problème.
AVERTISSEMENT : Pour réduire les risques de 
blessures, l’utilisateur doit lire et veiller à bien comprendre le 
manuel d’utilisation avant d’employer ce produit. 
Merci de votre achat.
Su recortadoras de hilo ha sido diseñada y fabricada de conformidad 
con las estrictas normas para brindar fiabilidad, facilidad de uso 
y seguridad para el operador. Con el debido cuidado, le brindará 
muchos años de sólido y eficiente funcionamiento.
ADVERTENCIA: Para reducir el riesgo de lesiones, 
el usuario debe leer y comprender el manual del operador antes 
de usar este producto. 
Le agradecemos su compra.
CONSERVER CE MANUEL POUR 
FUTURE RÉFÉRENCE
GUARDE ESTE MANUAL PARA 
 FUTURAS  CONSULTAS
SAVE THIS MANUAL FOR FUTURE REFERENCE
Your trimmer has been engineered and manufactured to our high standard for dependability, ease of operation, and opera-
tor safety. When properly cared for, it will give you years of rugged, trouble-free performance.
WARNING: To reduce the risk of injury, the user must read and understand the operator’s manual before using  
this product. 
Thank you for your purchase.  
						

							ii
A - Reel Easy string head (tête à ligne de coupe de Reel Easy, cabezal del hilo de Reel Easy)B  - Drive shaft housing (tube de l’arbre moteur, alojamiento del eje de impulsión)C  - Coupler (coupleur, acoplador)D  - Front handle (poignée avant, mango delantero)E  - Strap hanger (dispositif d’accrochage, colgador para la correa)F - Stop switch (commutateur d’arrêt, interruptor de apagado)G  - Trigger lock-out (gâchette avec verrou, gatillo con seguro)
H  - Starter grip and rope (poignée et cordon du lanceur, mango y cuerda del arrancador)I  - Primer bulb (poire d’amorçage, bomba  de cebado)J -  Choke lever (levier de volet de départ, palanca del anegador)K - Fuel cap (bouchon de carburant, tapa del tanque)L  - Rear handle (poignée arrière, mango trasero)M -  Throttle trigger (gâchette d’accélérateur, gatillo del acelerador)N  - Knob (bouton, perilla)O  - Curved shaft grass deflector (déflecteur d’herbe d’arbre courbe, deflector de pasto del eje curvo)P  - Straight shaft grass deflector (déflecteur d’herbe d’arbre droit, deflector de pasto para eje recto)Q  - Muffler (silencieux, silenciador)
Fig. 1
S430
C430
A
B
C
DE
FG
HI
Q
Q
J
K
L
M
A
B
C
D
E
FG
HI
J
K
L
M
N
N
O
P
See this fold-out section for all of the figures   referenced in the operator’s manual.
Consulter l’encart à volets afin d’examiner toutes les figures mentionnées dans le manuel d’utilisation.
Consulte esta sección desplegable para ver todas las figuras a las qu\�e  
se hace referencia en el manual del operador.
DUAL SPOOL™ FIXED LINE STRING HEAD 
INSERT
BOBINE À FIL FIXE DUAL SPOOLTM 
INSERTO PARA CABEZAL DEL HILO CON 
LÍNEA FIJA DUAL SPOOL™ 
REEL-EASY™ TAP ADVANCE SYSTEM
AVANCE DE LA LIGNE DE COUPE À TAPANT  
REEL-EASY™
SISTEMA DE AVANCE DE HILO POR GOLPE 
REEL-EASY™
Fig. 2Fig. 3
A - Button (bouton, botón)B  - Guide recess (logement guide, hueco guía) C  - Coupler (coupleur, acoplador)D  - Power head shaft (arbre du bloc moteur, eje del cabezal motor) E  - Knob (bouton, perilla)F  - Positioning hole (trou de positionnement, 
orificio de posicionamiento)G  - Trimmer attachment (accessoire taille-bordures, aditamento para recortar)
A
BCD
E
F
G           
						

							iii
Fig. 4
A - Hanger cap (capuchon de suspension, tapa de suspensión)B  - Hole (trou, orificio)C  - Secondary hole (trou secondaire, orificio secundario)D  - Button (bouton, botón)
Fig. 5
A  - Front handle (poignée avant, mango delantero)B  - Bolt (boulon, perno)C  - Washer (rondelle, arandela)D  - Wing nut (écrou papillon, tuerca de mariposa)
Fig. 6
A  - Wing nut (écrou papillon, tuerca de mariposa)B  - Flat washer (rondelle plate, arandela plana)C  - Bracket (support, soporte)D  - Grass deflector (déflecteur d’herbe, deflector de pasto)E  - Hex screw (vis à six pans, tornillo de hexagonal)F  - Curved shaft (d’arbre courbe, pasto del eje curvo)
Fig. 7
A  - Straight shaft grass deflector (déflecteur d’herbe d’arbre droit, deflector de pasto para eje recto)B  - Slot (fente, ranura)C  - Tab (languette, orejeta)D  - Wing screw (vis à oreilles, tornillo de mariposa)
A
B
C
D
A
BCD
A
BC
D
E
A
B
C
D
Fig. 8
A  - Oil cap/dipstick (bouchon/jauge d’huile, tapa de relleno de aceite / varilla medidora de aceite)B  - Hatched area (zone hachurée, área cubierta con rayas entrecruzadas)C  - Funnel (entonnoir, embudo)D  - Oil fill hole (orifice de remplissage d’huile, agujero de llenado de aceite)
Fig. 9
A
BC
D
PROPER OPERATING POSITION
BONNE POSITION DE TRAVAIL
POSICIÓN CORRECTA PARA EL MANEJO DE LA HERRAMIENTA
Fig. 10
A  - Curved shaft trimmer (taille-bordures à arbre courbe, recortadora de eje curvo)B  - Dangerous cutting area (zone de coupe dangereuse, área peligrosa de corte)C  - Direction of rotation (sens de rotation, sentido de rotación)D  - Best cutting area (zone d’efficacité maximum, mejor área de corte)
Fig. 11
A  - Straight shaft trimmer (taille-bordures à arbre droit, recortadora de eje recto)B  - Dangerous cutting area (zone de coupe dangereuse, área peligrosa de corte)C  - Direction of rotation (sens de rotation, sentido de rotación)D  - Best cutting area (zone d’efficacité maximum, mejor área de corte)
A
B
C
D
A
B
CD
Fig. 12
A  - Straight shaft trimmer line trimming cut-off blade (lame de sectionnement de ligne du taille-bordures à arbre droit, cuchilla de corte de hilo de la recortadora de eje recto)B  - Curved shaft trimmer line trimming  cut-off blade (lame de sectionnement de ligne du taille-bordures à arbre courbe, cuchilla de corte de hilo de la recortadora de eje curvo)
A
B
F      
						

							iv
FULLCHOKE
RUN
HALF
CHOKE
FULLCHOKE
RUN
HALF
CHOKE
A  - Stop switch (commutateur d’arrêt, interruptor de apagado)B  - Trigger lock-out (gâchette avec verrou, gatillo con seguro)C  - Throttle trigger (gâchette d’accélérateur, gatillo del acelerador)
Fig. 14
A  - Stop switch (commutateur d’arrêt, interruptor de apagado)B  - Trigger lock-out (gâchette avec verrou, gatillo con seguro)C  - Primer bulb (poire d’amorçage, bomba  de cebado)D  - Throttle trigger (gâchette d’accélérateur, gatillo del acelerador)
Fig. 15
A  - Run position (position de marche , posición de marcha)B  - Start lever (palanca de arranque, levier  de volet de départ)C  - Start position (position de démarrage, posición de arranque) 
Fig. 16
Fig. 17
Fig. 18
Fig. 19
A
B
C
AB
C
D
A
C
B
Fig. 13
A  - Spool retainer (retenue de bobine, retén del carrete)
A
A
A  - Eyelet (oeillet, ojillo)B  - Arrow on spool (flèche sur la bobine, flecha en el carrete)
A
B
A - Pull strings (tirer vers l’extérieur, tira del hilo)
B  - Rotate the spool counterclock wise (tourner le bobine dans le sens antihoraire, gire a la izquierda el carrete)
A
Fig. 21
A  - String head housing (boîtier de tête de coupe, alojamiento del cabezal de hilo)B  - Spool (bobine, carrete)C  - Spool retainer (retenue de bobine, retén del carrete)
A
B
C
A
A - Pull strings (tirer vers l’extérieur, tira del hilo)
Fig. 20
A  - Insert line through slots until approx.  1 in. protrudes from holes [insérer les fils dans les fentes de manière à les faire dépasser d’environ 25 mm (1 po), introduzca los hilos a través de las ranuras hasta que sobresalgan aproximadamente  25 mm (1 pulg.) de los orificios]B  - Eyelet (trou, ojillos)C  - Pull line from holes to remove (tirer les fils hors des trous afin de les retirer, tire de  los hilospara retirar los a través de  los orificios)
A
C
B
Fig. 22 
A  - Spool retainer (retenue de bobine, retén del carrete)B  - Spool (bobine, carrete)
B
B
FULLCHOKE
RUN
HALF
CHOKE
FULLCHOKE
RUN
HALF
CHOKE                     
						

							v
A - Idle speed screw (vis de  ralenti, tornillo de ajuste de la velocidad en vacío)
Fig. 23
A  - Latch (loquet, pestillo)B  - Air filter cover (couvercle du filtre  à air, tapa del filtro de aire)C  - Pull and lift cover to open (tirer sur le couvercle pour l’ouvrir, tire de la tapa para abrirla)
Fig. 24
A  - Filter screen (filtre écran, filtro pantalla)
Fig. 25
A  - Idle speed screw (vis de  ralenti, tornillo de ajuste de la velocidad en vacío)B  - Air filter cover (couvercle du filtre  à air, tapa del filtro de aire)
Fig. 30
A
A
B
C
AA
B
Fig. 26
A
A  - Starter grip and rope (poignée et cordon du lanceur, mango y cuerda del arrancador)B  - Deep hole in camshaft gear (Trou profond situé dans l’engrenage de l’arbre à cames Orificio profundo en el engranaje del árbol de levas)
Fig. 28
A
A  - Feeler gauge (jauge d’épaisseur, calibrador de separaciones)B  - Rocker arm (culbuteur, balancín)C  - Rocker arm cover (cache  -culasse, tapa del balancín)D - Screw (vis, tornillo)
B
Fig. 29
A  - Retaining nut (écrou de retenue, tuerca de retencion)B  - Adjusting nut (écrou de réglage, tuerca de ajuste)C  - Stud (goujon, elemento estructural)
B
A
B
A  - Screw (vis, tornillo)B  - Top engine cover (couvercle moteur supérieur, cubierta superior del motor)C  - Bottom cover (couvercle inférieure, cubierta inferior)
Fig. 27
A
B
A
C
CD
A
C                  
						

							2
 Introduction ........................................................................\�........................................................................\�......................2
  Introduction / Introducción
 General Safety Rules ........................................................................\�........................................................................\�........3
  Règles de sécurité générales / Reglas de seguridad genera\�les
 Specific Safety Rules ........................................................................\�........................................................................\�........4
  Règles de sécurité particulières / Reglas de seguridad específicas
	Symbols ........................................................................\�........................................................................\�............................5
 Symboles / Símbolos
 Features ........................................................................\�........................................................................\�............................6
  Caractéristiques / Características
 Assembly ........................................................................\�........................................................................\�.......................7-8
  Assemblage / Armado
 Operation ........................................................................\�........................................................................\�.....................8-10
  Utilisation / Funcionamiento
 Maintenance ........................................................................\�........................................................................\�..............11-13
  Entretien / Mantenimiento
 Troubleshooting ........................................................................\�........................................................................\�.........14-15
  Dépannage / Solución de problemas
 Warranty ........................................................................\�........................................................................\�....................15-17
  Garantie / Garantía
 Parts Ordering and Service ........................................................................\�.......................................................Back Page Commande de pièces et réparation / Pedidos de piezas y servicio .........................................................Page arrière / Pág. posterior 
TABLE OF CONTENTS 
TABLE DES MATIÈRES / ÍNDICE DE CONTENIDO
INTRODUCTION 
INTRODUCTION / INTRODUCCIÓN
This product has many features for making its use more pleasant and enjoyable. Safety, performance, and dependability 
have been given top priority in the design of this product making it easy to maintain and operate.
* * *
Ce produit offre de nombreuses fonctions destinées à rendre son utilisation plus plaisante et satisfaisante. Lors de la 
conception de ce produit, l’accent a été mis sur la sécurité, les performances et l\�a fiabilité, afin d’en faire un outil facile à 
utiliser et à entretenir.
* * *
 Este producto ofrece numerosas características para hacer más agradable y placentero su uso. En el diseño de este producto 
se ha conferido prioridad a la seguridad, el desempeño y la fiabilida\�d, por lo cual se facilita su manejo y mantenimiento. 
						

							3 — English
GENERAL SAFETY RULES
WARNING:
Read and understand all instructions. Failure to follow all 
instructions listed below may result in electric shock, fire 
and/or serious personal injury.
READ ALL INSTRUCTIONS
 For safe operation, read and understand all instructions 
before using this product. Follow all safety instructions. 
Failure to follow all safety instructions listed below, can 
result in serious personal injury.
 Do not allow children or untrained individuals to use this 
unit.
 Never start or run the engine in a closed or poorly venti-
lated area; breathing exhaust fumes can kill.
 Clear the work area before each use. Remove all objects 
such as rocks, broken glass, nails, wire, or loose string 
which can be thrown or become entangled in the cutting 
line or blade.
 Always wear eye protection with side shields marked to 
comply with ANSI Z87.1 along with hearing protection 
when operating this equipment.
 Wear heavy, long pants, long sleeves, boots, and gloves. 
Do not wear loose fitting clothing, short pants, sandals, 
or go barefoot. Do not wear jewelry of any kind.
 Heavy protective clothing may increase operator fatigue, 
which could lead to heat stroke. During weather that is 
hot and humid, heavy work should be scheduled for early 
morning or late afternoon hours when temperatures are 
cooler.
 Product users on United States Forest Service land, and in 
some states, must comply with fire prevention regulations. 
This product is equipped with a spark arrestor; however, 
other user requirements may apply. Check with your 
federal, state, or local authorities.
 Never operate this unit on the operator’s left side.
 Secure long hair above shoulder level to prevent 
entanglement in moving parts.
 Keep all bystanders, children, and pets at least  
50 ft. away. Bystanders should be encouraged to wear 
eye protection. If you are approached, stop the engine 
and cutting attachment. In the case of bladed units, there 
is the added risk of injury to bystanders from being struck 
with the moving blade in the event of a blade thrust or 
other unexpected reaction of the saw.
 Do not operate this unit when you are tired, ill, or under 
the influence of alcohol, drugs, or medication. 
 Do not operate in poor lighting.
 Keep firm footing and balance. Do not overreach. 
Overreaching can result in loss of balance or exposure 
to hot surfaces.
 Keep all parts of your body away from any moving part. 
 To avoid hot surfaces, never operate the unit with the 
bottom of the engine above waist level.
 Do not touch area around the muffler or cylinder of the 
unit, these parts get hot from operation. Contact with 
hot surfaces could result in possible serious personal 
injury.
 Always stop the engine and remove the spark plug wire 
before making any adjustments or repairs except for 
carburetor adjustments. 
 Inspect the unit before each use for loose fasteners, fuel 
leaks, etc. Replace any damaged parts before use. 
 The cutting attachment should never rotate at idle during 
normal use. The cutting attachment may rotate at idle 
during carburetor adjustments.
   It has been reported that vibrations from hand-held tools  
may contribute to a condition called Raynaud’s Syndrome 
in certain individuals. Symptoms may include tingling, 
numbness, and blanching of the fingers, usually apparent 
upon exposure to cold. Hereditary factors, exposure to 
cold and dampness, diet, smoking, and work practices 
are all thought to contribute to the development of these 
symptoms. It is presently unknown what, if any, vibrations 
or extent of exposure may contribute to the condition. 
There are measures that can be taken by the operator to 
possibly reduce the effects of vibration:
  a)  Keep your body warm in cold weather. When operating 
the unit wear gloves to keep hands and wrists warm. 
It is reported that cold weather is a major factor con-
tributing to Raynaud’s Syndrome.
  b)  After each period of operation, exercise to increase 
blood circulation. 
  c)  Take frequent work breaks. Limit the amount of  
exposure per day.
  d)  Keep the tool well maintained, fasteners tightened, 
and worn parts replaced.
  If you experience any of the symptoms of this condition, 
immediately discontinue use and see your physician about 
these symptoms.
 Mix and store fuel in a container approved for gasoline.
 Mix fuel outdoors where there are no sparks or flames. 
Wipe up any fuel spillage. Move 30 ft. away from refueling 
site before starting engine. Slowly remove the fuel cap 
after stopping engine. Do not smoke when refueling.
 Stop the engine and allow to cool before refueling or 
storing the unit. 
 Allow the engine to cool; empty the fuel tank and secure 
the unit from moving before transporting in a vehicle.
 Wear your protective equipment and observe all safety 
instructions. For units equipped with a clutch, be sure 
the cutting attachment stops turning when the engine 
idles. When the unit is turned off make sure the cutting 
attachment has stopped before the unit is set down. 
						

							4 — English
SPECIFIC SAFETY RULES
SPECIFIC SAFETY RULES FOR TRIMMER 
USE
 Inspect before use. Replace damaged parts. Make sure 
fasteners are in place and secure. Check for fuel leaks.
 Replace string head if cracked, chipped, or damaged 
in any way. Be sure the string head or blade is properly 
installed and securely fastened. Failure to do so can cause 
serious injury.
 Make sure all guards, straps, deflectors, and handles are 
properly and securely attached.
 Never use blades, flailing devices, wire, or rope. Use only 
the manufacturer’s replacement line in the cutting head.
Do not use any other cutting attachment. To install any 
other brand of cutting head to this string trimmer can 
result in serious personal injury.
 Never operate unit without the grass deflector in place 
and in good condition.
 Maintain a firm grip on both handles while trimming. Keep 
string head below waist level. Never cut with the string 
head located over 30 in. or more above the ground. 
						

							5 — English
SYMBOLS
Some of the following symbols may be used on this product. Please study them and learn their meaning for safe 
operation of this product.
SYMBOLNAMEEXPLANATION
Safety AlertIndicates a potential personal injury hazard.
Read Operator’s ManualTo reduce the risk of injury, user must read and under-
stand operator’s manual before using this product.
Eye and Hearing Protection
Always wear eye protection with side shields marked to 
comply with ANSI Z87.1 along with hearing protection 
when operating this equipment.
Keep Bystanders AwayKeep all bystanders at least 50 ft. away.
RicochetThrown objects can ricochet and result in personal injury 
or property damage.
No BladeDo not install or use any type of blade on a product dis-
playing this symbol.
The following signal words and meanings are intended to explain the levels of risk associated with this product.
SYMBOLSIGNALMEANING
DANGER:Indicates an imminently hazardous situation, which, if not avoided, will result 
in death or serious injury.
WARNING:Indicates a potentially hazardous situation, which, if not avoided, could result 
in death or serious injury.
CAUTION:Indicates a potentially hazardous situation, which, if not avoided, may result in 
minor or moderate injury. 
CAUTION:(Without Safety Alert Symbol) Indicates a situation that may result in property 
damage. 
						

							6 — English
PRODUCT SPECIFICATIONS
Weight - (without fuel)
 C430 ........................................................................\�........................................................................\�..................10.7 lbs.
 S430 ........................................................................\�........................................................................\�...................11.8 lbs.
Line cutting width
 C430 ........................................................................\�........................................................................\�.......................17 in.
 S430 ........................................................................\�........................................................................\�........................18 in.
Engine displacement  ........................................................................\�........................................................................\�.30cc
Engine Lubricant Volume ........................................................................\�....................................................................65 ml
Line diameter
  Reel Easy String Head ........................................................................\�................................................................ .095  in.
  Dual Spool String Head ........................................................................\�....................................  .095 in. to .105 in. max.
FEATURES
KNOW YOUR STRING TRIMMER
See Figure 1.
The safe use of this product requires an understanding of 
the information on the tool and in this operator’s manual as 
well as a knowledge of the project you are attempting. Before 
use of this product, familiarize yourself with all operating 
features and safety rules.
ERGONOMIC DESIGN
The design of the trimmer provides for easy handling. It is 
designed for comfort and ease of grasp when operating in 
different positions and at different angles.
GRASS DEFLECTOR
The trimmer includes a grass deflector that helps protect 
you from flying debris.
OIL CAP/DIPSTICK
Remove the oil fill cap to check and add lubricant when 
necessary. 
TOP-MOUNTED ENGINE
The top-mounted engine improves balance and is located 
away from the dust and debris of the cutting area.