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USER MANUAL 51231 TORO
8-Inch Cutting Width
Model No. 51231—89000001 & Up
WARNING—To reduce the risk of fire, electric shock or injury, follow these safety instructions.
Read All Instructions
It is essential that you or any other operator of the appliance read and understand the contents of this manual before operating the appliance. Pay particular attention to the safety alert symbol △ which means CAUTION, WARNING OR DANGER — “personal safety instruction.” FAILURE TO COMPLY WITH INSTRUCTION MAY RESULT IN PERSONAL INJURY, RISK OF FIRE OR ELECTRICAL SHOCK.
- Avoid Dangerous Environment–Don't use appliances in damp or wet locations.
- Don't Use In Rain.
- Keep Children Away–All visitors should be kept at a distance from work area.
- Dress Properly—Do not wear loose clothing or jewelry. They can be caught in moving parts. Use of rubber gloves and substantial footwear is recommended when working outdoors. Wear protective hair covering to contain long hair.
- Use Safety Glasses—Always use face or dust mask if operation is dusty. Safety glasses are available at most retail stores.
- Use Right Appliance—Do not use the appliance for any job except that for which it was intended.
- Ground Fault Circuit Interrupter (GFCI) protection should be provided on the circuit(s) or outlet(s) to be used for the gardening appliance. Receptacles are available having built-in GFCI protection and may be used for this measure of safety.
- WARNING—To reduce the risk of electrical shock, use only an approved UL (CSA in Canada) extension cord suitable for outdoor use, such as an extension cord of cord type SW-A, SOW-A, STW-A, STOW-A, SJW-A, SJOW-A, SJTW-A or SJTOW-A.
- Extension Cord-Make sure your extension cord is in good condition. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. An undersized extension cord will cause a drop in line voltage resulting in loss of power and overheating. The Extension Cord Chart shows the correct size to use depending on cord length and nameplate ampere rating. If in doubt, use the next heavier gage. The smaller the gage number, the heavier the cord. To reduce the risk of disconnection of appliance from extension cord during operating, secure the cord as described in this manual.
| EXTENSION CORD CHART | ||
| If length of extension cord is less than or equal to: | 100 ft. 150 ft. | |
| Assure wire size gage (A.W.G.) in cord is: | 16 14 | |
Note: Use of an extension cord over 150 feet is not recommended.
- To reduce the risk of electric shock, this appliance has a polarized plug (one blade is wider than the other) (Fig. 2) and will require the use of a polarized extension cord. The appliance plug will fit into a polarized extension cord only one way. If the plug does not fit fully into the extension cord, reverse the plug. If the plug still does not fit, obtain a correct
polarized extension cord. A polarized extension cord will require the use of a polarized wall outlet. This plug will fit into the polarized wall outlet only one way. If the plug does not fit fully into the wall outlet, reverse the plug. If the plug still does not fit, contact a qualified electrician to install the proper wall outlet. Do not change the equipment plug, extension cord receptacle, or extension cord plug in any way.
- Avoid Unintentional Starting–Do not carry plugged-in appliance with finger on switch. Be sure switch is off when plugging in.
- Don't Abuse Cord–Never carry appliance by cord or yank it to disconnect from receptacle. Keep cord from heat, oil, and sharp edges.
- Keep grass shield in place and in working order.
- Keep hands and feet away from cutting area.
- Don't Force Appliance—It will do the job better and with less likelihood of a risk of injury at the rate for which it was designed.
- Don't Overreach—Keep proper footing and balance at all times.
- Stay Alert – Watch what you are doing. Use common sense. Do not operate appliance when you are tired.
- Disconnect Appliance–Disconnect the appliance from the power supply when not in use or before servicing.
- Store Idle Appliances Indoors—When not in use, appliances should be stored indoors in dry, and high or locked-up place-out of the reach of children.
- Maintain Appliance With Care –Follow instructions for changing accessories. Inspect appliance periodically, and if damaged, have it repaired by an Authorized Toro Service Dealer. Inspect extension cords periodically and replace if damaged. Keep handles dry, clean, and free from oil and grease. Trimmer requires no lubrication.
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Check Damaged Parts – Before further use of the appliance, a guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting, and any other condition that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced by an authorized service center unless indicated elsewhere in this manual.
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When servicing use only identical TORO replacement parts.
SAVE THESE INSTRUCTIONS
Safety and Instruction Decals

Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or lost.
WARNING: OBJECTS CAN BE THROWN BY THE TRIMMER. THROWN OBJECTS COULD CAUSE INJURY TO THE OPERATOR OR BYSTANDERS. • Always wear eye & leg protection. • Keep people & pets away from trimming area. PERSONAL INJURY COULD BE CAUSED BY CONTACT WITH ROTATING CUTTING LINE. • Keep all parts of your body clear. • Do not operate without grass shield in place. • Urplug unit before cleaning or servicing. • Use only .050' nylon monofilament cutting line. TO AVOID PERSONAL INJURY: • Read and understand operator's manual. • To reduce risk of electric shock, do not expose unit to water. • When servicing use only identical replacement parts. ADVERTENCIA: LA RECORTADORA PUEDE ARROJAR O BJETOS, ESTOS OBJELOS PUEDEN CAUSAR LESIONES AL OPERADOR Y A LAS PERSONAS PRESENTES. • Utilice siempre protección para los ojos y las piemas. • Mantenga a las personas y a las mascotas alejadas del área de recorte. SE PUEDEN PRODUCIR LESIONES PERSONALES SI SE ENTRA EN CONTACTO CONLA LINEA DE CORTE GIRATORIA. • Mantenga todas las partes de su cuerpo alejadas de la línea de corte. • No la maneje sin tener instalado un resguardo contra el césped. • Desenchufe la unidad antes de limpiaria o darle servicio. • Utilice solamente una línea de corte de monofilamento de nylon de 0.050 pulgadas. PARA EVITAR LESIONES PERSONALES: • Lea y entienda el manual del operador. • Para reducir el riesgo de descarga eléctrica, no exponga la unidad al agua. • Cuando le de servicio utilice solamente piezas de repuesto idínticas. AVERTISSEMENT: DES OBJETS PEUVENT ÊTRE PROJETÉS PAR LE COUPE-BORDURE. LES OBJETS PROJETES PELMENT PROVOQUER DES BLESSURES A L'UTILISATEUR OU À SON ENTOURAGE : • Toujours porter des dispositifs de protection pour les yeux et les jambes : • Intendire la zone de travail aux autres personnes et auto animaux domestiques, LE FIL ROTATIF COUPANT PEUT CAUSER DES BLESSURES EN CAS DE CONTACT : • Garder ses distances avec le fil. • Ne pas faire fonctionner sans le chasse-herbe en place, • Débrancher l'appareil avant de le mettoyer ou le réparer. • Utiliser uniquement un fil de coupe mono-filament en nylon de 1,3 mm. COMMENT EVITER LES BLESSURES : • Line attentivement le manuel de l'utilisateur. • Ne pas exposer à l'eau afin d'éviter les risques d'électrocution. • Pour le dépannage, m'utiliser que des pièces de rechange identiques. The Toro Company Bloomington, MIN, U.S.A. 8 high CUI Trimmer/Recontrolia de 8 pulgadas Coupe-bordure de 2013-m. Mode/Modelo/Modelo N°5221.1. 2017 A.C,C,A-224,60Hz SERIAL ONJERODE DE SERIAL LIMERO DE SERIES
- Make sure spool cap is securely snapped in place. If not, align cap tabs with slots in cutter head, press tabs in and push down cap and spool to lock cap in place (Fig. 7).

CAUTION
POTENTIAL HAZARD
- Cap may loosen during shipment. A loose or improperly installed cap or spool could fly off trimmer.
WHAT CAN HAPPEN
- Contact with a thrown spool or cap could cause injury to operator or bystanders.
HOW TO AVOID THE HAZARD
- Be sure spool and cap are fully secured before operating the unit. Replace spool if it is damaged or if cap does not securely snap onto cutter head.
- Keep bystanders and pets away from trimming area.
Securing Extension Cord
Note: Use only a UL listed (CSA certified in Canada) extension cord recommended for outdoor use. Refer to Extension Cord Chart on page 1.
- Secure extension cord as shown in Figure 3.
Operation

WARNING
POTENTIAL HAZARD
- Objects can be thrown by the trimmer while it is in operation.
WHAT CAN HAPPEN
- Thrown objects could cause injury to the operator or bystanders.
HOW TO AVOID THE HAZARD
• Always wear safety goggles or other suitable eye protection, long pants and shoes while operating trimmer.
- Keep people and pets away from trimming area.
To reduce line wear or breakage, follow these trimming techniques.
- Inspect area to be trimmed for any wire, rope or string-like matter which could become entangled in the rotating line. Pick up any objects or debris that could be thrown by the trimmer.
- Trim only when grass and weeds are dry.
- Slowly move unit in and out of area being cut, maintaining unit at desired cutting height. Use a forward-backward or side-to-side motion (Fig. 4 & 5).
- Grass in excess of eight inches tall or small weeds should be cut by cutting from the top to the bottom in small increments.
- DO NOT FORCE THE UNIT. Allow the very tip of the nylon line to do the cutting (especially along walls).
- The tip of the cutting line will wear during use and reduce the cutting swath. If the line is not advanced occasionally, it will wear down to the eyelet. When the trimmer stops, the line
tends to relax and may retract into the cutter head. Should this occur, remove spool, refeed the line through eyelet, and reassemble spool to trimmer.
• After each use, feed out some line to prevent line from retracting into cutting head.
- NEVER drag the trimmer spool on the ground while trimming.

WARNING
POTENTIAL HAZARD
- When using trimmer, objects may be thrown in operator's or bystander's direction.
WHAT CAN HAPPEN
- Thrown objects could cause injury to the operator or bystanders.
HOW TO AVOID THE HAZARD
• Always wear safety goggles or other suitable eye protection, long pants and shoes while operating trimmer.
- Keep people and pets away from trimming area.
Lengthening Cutting Line
- To lengthen line, tap spool on the ground while the motor continues to run (Fig. 6); do not hold it on the ground. The cutting knife attached to the shield will cut the line to the proper length.
Note: To help prevent line tangle, tap only once to lengthen line. If additional line is required, wait a few seconds before retapping trimmer head. Do not allow line to wear too short. Keep line length at full cutting diameter as much as possible.
Replacing Cutting Line
For best performance, use only Toro spools. Prewound replacement spools can be purchased from your local Toro retailer.

CAUTION
POTENTIAL HAZARD
- Use of line other than proper monofilament cutting line could cause personal injury.
WHAT CAN HAPPEN
- Metal wire, rope or other string-like substances could cut through clothes, skin, etc. and cause personal injury.
HOW TO AVOID THE HAZARD
- Do not use any type of metal wire, rope or other string-like substance.
- Use only TORO .050" dia. nylon monofilament cutting line, 30 feet maximum.

WARNING
POTENTIAL HAZARD
- When trimmer is in operation, the cutting head is rotating.
WHAT CAN HAPPEN
- Contact with rotating cutting head could cause personal injury.
HOW TO AVOID THE HAZARD
• Always be sure cutting head has completely stopped rotating and trimmer is unplugged before inverting trimmer.
- Never activate trimmer when it is in an inverted position.
- Disconnect trimmer from power source.
- To remove empty spool, invert trimmer, place hand over spool and press in tabs on each side of cap (Fig. 7).
- If there is any line on spool, hold free end of line with one hand to prevent spool from unraveling and with other hand grasp spool and lift off spool and cap together (Fig. 8).
Note: If spring falls off cutter head during this procedure, reinstall spring before reinstalling spool and cap.
- Thoroughly clean cutter head. Inspect for any damaged or worn parts.
- Unwind no more than three inches of line from new spool. Hold line and spool to prevent unraveling.
- Place cap on spool.
- Insert line into eyelet (Fig. 7) and hold line with one hand while using your other hand to place spool and cap on spring. Align cap tabs with slots in cutter head, press in tabs and push down cap and spool to lock cap in place (Fig. 7).
Note: Spool may need to be rotated slightly to allow it to be fully installed.

CAUTION
POTENTIAL HAZARD
- An improperly installed cap or spool could fly off trimmer.
WHAT CAN HAPPEN
- Contact with a thrown spool or cap could cause injury to operator or bystanders.
HOW TO AVOID THE HAZARD
- Be sure spool and cap are fully secured before operating the unit. Replace spool if it is damaged or if cap does not securely snap onto cutter head.
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Keep bystanders and pets away from trimming area.
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If line should tangle or break at eyelet, unplug trimmer, remove spool, refeed the line through eyelet, and reassemble spool to trimmer.
- The spool may wear during normal use of the line advance feature and may require occasional replacement. Replacement spools are available through your TORO retailer. See page 4 for accessories.
Rewinding Empty Spools
Replacement line can be purchased from your local Toro retailer.
- Hook one end of line into slot on spool, allowing no more than 1/8" to protrude. Push end of line all the way to the inner end of slot. Wind line in direction of arrow on spool in level rows between spool flanges (Fig. 9).
Trimmer will not function properly if:
• line is wound in the wrong direction
- end of line protrudes more than 1/8" at inner end of slot
• line is wound beyond outer edges of spool
Maintenance

WARNING
POTENTIAL HAZARD
- There is the possibility that trimmer could be inadvertently started when the extension cord is plugged into an electrical socket.
WHAT CAN HAPPEN
- Inadvertent starting could cause personal injury to operator or bystanders.
HOW TO AVOID THE HAZARD
- Always be sure your trimmer is unplugged and the cutting head has stopped rotating before attempting any maintenance or repairs.
- To keep the exterior clean, wipe it with a damp cloth. Never hose unit down.
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Wipe or scrape clean the cutter head and spool area any time there is an accumulation of dirt or cuttings.
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Check and tighten all fasteners. If any part is damaged or lost, repair or replace it.
- Scrape debris away from air intake vents in both sides of motor housing (Fig. 10).
IMPORTANT: Keeping air intake vents free of grass and debris prevents motor overheating and possible failure.
IMPORTANT: To avoid damaging shield when storing trimmer, rest trimmer on cutter head or motor housing or hang trimmer from handle(s). DO NOT REST TRIMMER ON GRASS SHIELD. THE GRASS SHIELD MAY WARP AND INTERFERE WITH CUTTING LINE.
- Any other servicing should be performed by an authorized Toro Service Dealer.
Accessories
| REPLACEMENTPARTNUMBERS | ||
| Prewound Spool | Empty Spool | Coil of Cutting Line |
| Model #88170 Part #73–8240 30' of .050" Model #88011 | ||
Toro Service Support
If your unit requires service or maintenance, your nearest TORO Master Service Dealer (U.S. only) is the best dealer to assist you. Refer to the “Yellow Pages” of your local telephone directory in the section titled “Lawn Mowers.” TORO Master Service Dealers are listed under the TORO trademark. If you need help locating a TORO Master Service Dealer near you, call 1-800-421-9684 (U.S. only) for assistance.
The Toro Promise
A Full Two Year Residential Use Warranty For the United States, Canada and Mexico
The Toro Company warrants this TORO Product for two years against defects in material or workmanship. To receive a replacement or repair, at Toro's option, just return the complete unit, postage prepaid, to the seller. (U.S. customers ONLY may return their unit, with proof of purchase, to any TORO Master Service Dealer or the TORO Service Center, 5300 Shoreline Blvd., Mound, MN 55364.) This warranty covers product defects only. It does not cover incidental or consequential damages. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you. This warranty gives you specific rights, and you may have other rights which vary from state to state. If all other remedies fail, you may contact us at The Toro Company, Customer Service Department, 8111 Lyndale Ave S, Bloomington, MN, 55420-1196. (Do not return defective product to this address.)
COUNTRIES OTHER THAN THE UNITED STATES, CANADA OR MEXICO
Customers who have purchased TORO products exported from the United States, Canada or Mexico should contact their TORO Distributor (Dealer) to obtain guarantee policies for your country, province or state. If for any reason you are dissatisfied with your Distributor's service or have difficulty obtaining guarantee information, contact the TORO importer.
Français
Sécurité
- Model and serial number decal
Français
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Simple line drawing of a rope knot with a central connector, no text or symbols present
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4 1139
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5 1140
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6 1135
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7 1 2 3 4 1111English
- Cap 3. Tabs on cap
- Spool 4. Eyelet