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WARNING:
To reduce the risk of injury, the user must read and understand the operator's manual. Save this manual.
17 in. String Trimmer - Curved Shaft
Model No. 51957—313000001 & Up
18 in. String Trimmer - Straight Shaft
Model No. 51977—313000001 & Up
NOTICE
Do not use E15, E20, or E85 fuel (or fuel
containing greater than 10% ethanol) in
this product. It is a violation of federal law
and will damage the unit and void your
warranty.
Form No. 3376-828 Rev. A
If you have questions concerning
your trimmer, please call us
at 1-866-574-9242 (US) or
1-866-574-9243 (Canada).
English (EN), French (FR), and Spanish (ES)
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Table of Contents
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Summary of Contents for Toro 51957
- Page 1 Form No. 3376-828 Rev. A 17 in. String Trimmer - Curved Shaft Model No. 51957—313000001 & Up 18 in. String Trimmer - Straight Shaft Model No. 51977—313000001 & Up NOTICE If you have questions concerning your trimmer, please call us...
- Page 2 READ THIS INFORMATION STOP Before you use your new trimmer, read the following helpful hints to get you started. Fueling WARNING: Gasoline and its vapors are highly flammable and explosive. To prevent serious personal injury and property damage, handle it with care. Keep away from ignition sources and open flames, handle outdoors only, do not smoke and wipe up spills immediately.
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Page 3: Table Of Contents
Table of Contents Introduction ....................................4 General Safety Rules ................................. 5-6 Specific Safety Rules ..................................6 Symbols......................................7 Product Labels ....................................8 Features ....................................9-10 Product Specifications ................................9 Know Your Product ................................10 Assembly....................................11-13 Unpacking ....................................11 Packing List ..................................11 Connecting the Attachment to the Upper Shaft ........................12 Removing the Attachment from the Upper Shaft ........................12 Attaching the Front Handle ..............................12 Attaching the Grass Deflector ..............................13... -
Page 4: Introduction
The Toro warning system in this manual identifies potential hazards and has special safety messages that help you and others avoid personal injury, even death. DANGER, WARNING, and CAUTION are signal words that identify the level of hazard. -
Page 5: General Safety Rules
General Safety Rules WARNING: Read and understand all instructions. Failure to follow all instructions may result in electric shock, fire and/or serious personal injury. Read All Instructions Keep all parts of your body away from any moving part. For safe operation, read and understand all instructions ... -
Page 6: Specific Safety Rules
Allow the engine to cool; empty the fuel tank into a Wear your protective equipment and observe all safety container approved for fuel and secure the unit from instructions. For units equipped with a clutch, be sure moving before transporting in a vehicle. the cutting attachment stops turning when the engine idles. -
Page 7: Symbols
Symbols The following signal words and meanings are intended to explain the levels of risk associated with this product. Symbol Signal Meaning 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. -
Page 8: Product Labels
Product Labels Product labels and instructions are easily visible to the operator and are located near any area of potential danger. Replace damaged or lost labels Part No. 940686099 Part No. 940864003 Push bulb Set choke lever to and pull starter handle sharply Set choke lever to Pull starter handle until engine runs,... -
Page 9: Features
Features Product Specifications Name Specification Engine 25.4cc Full Crank Cutting Width Model No. 51957 17 in. Model No. 51977 18 in. Line Size .095 in. Weight Model No. 51957 11.6 lbs. Model No. 51977 12.5 lbs. Specifications... -
Page 10: Know Your Product
Grip and durability. Rope On/Stop Grass Deflector Switch The grass deflector helps protect you from flying debris. Coupler Fuel Curved Shaft Trimmer Throttle Choke (Model No. 51957) Trigger Lever Starter Grip and Muffler Rope Front Handle On/Stop Knob Switch Curved Shaft... -
Page 11: Assembly
1-866-574-9242 (US) or 1-866-574-9243 (Canada) for leading to possible serious personal injury. assistance. Packing List WARNING: 51957 Curved Shaft Trimmer To prevent accidental starting that could cause Upper Shaft (Power Head) serious personal injury, always disconnect the Curved Shaft Attachment... -
Page 12: Connecting The Attachment To The Upper Shaft
Connecting the Attachment to the Removing the Attachment from the Upper Shaft Upper Shaft See Figure 2. See Figure 2. Follow these steps to remove the attachment from the upper shaft. WARNING: Never install, remove, or adjust any attachment 1. Stop the engine and disconnect the spark plug wire. while power head is running. -
Page 13: Attaching The Grass Deflector
5/16 in. wrench. deflector can result in debris being thrown at the Bolt operator and result in serious injury. To Attach the Curved Shaft Grass Deflector Model No. 51957 Straight Shaft See Figure 4. Grass Deflector Slot Follow these steps to attach the curved shaft grass deflector. -
Page 14: Operation
Operation Recommended fuel: This engine is certified to operate on unleaded gasoline intended for automotive use. WARNING: Do not allow familiarity with this product to Note: We recommend you use high-quality synthetic make you careless. Remember that a careless 2-cycle lubricant in this product. Mix at 2.6 oz. per gallon (US). -
Page 15: Starting The Product
Starting the Product See Figures 6 - 8. Starting the product differs depending on whether the engine is cold or warm. Refer to the label on the air filter cover. To Start a Cold Engine: Follow these steps to start a cold engine. 1. -
Page 16: Operating The Trimmer
2. Hold the trimmer at waist level with your right hand To Operate the Curved Shaft Trimmer on the throttle trigger and your left hand on the front (Model No. 51957) handle. See Figure 9. 3. Place the product on the right side of your body with Follow these steps to operate the curved shaft trimmer. -
Page 17: To Advance The Cutting Line
To Advance the Cutting Line 4. Use the tip of string to do the cutting; do not force string head into uncut grass. See Figure 11. 5. Wire and picket fences cause extra string wear, even Line advance is controlled by tapping the string head on breakage. -
Page 18: Installing Line In Reel Easy String Head
5. While holding the string head in one hand with your other hand, rotate the knob on the string head to Clockwise (51977 Counterclockwise wind the line. If using the 51957 (curved shaft), knob straight shaft) (51957 curved shaft) should be rotated counterclockwise. If using the 51977 (straight shaft), knob should be rotated clockwise. -
Page 19: Maintenance
Servicing the Product WARNING: Check and tighten all fasteners. If any part is damaged or Use only Toro replacement parts when servicing lost, repair it or replace it. this product. Use of any other parts could create Checking the Fuel Cap, Tank, and Lines a hazard or cause product damage. -
Page 20: Replacing The Spark Arrestor
1. Remove the spark plug boot. The spark arrestor may need to be cleaned or replaced after 2. Loosen the spark plug by turning it counterclockwise repeated use. If replacement is necessary, use Toro part with a socket. number 000998216.