Weed Eater SST25C, 545186797 Service and Adjustments, Replace Spark Plug, Line Replacement

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REPLACE SPARK PLUG

Replace the spark plug each year to ensure the engine starts easier and runs better. Set spark plug gap at 0.025 inch (0.6 mm). Igni- tion timing is fixed and nonadjustable.

1.Twist, then pull off spark plug boot.

2.Remove spark plug from cylinder and dis- card.

3.Replace with Champion RCJ-6Y spark plug and tighten securely with a 3/4 inch (19 mm) socket wrench.

4.Reinstall the spark plug boot.

SERVICE AND ADJUSTMENTS

LINE REPLACEMENT

For unit to operate properly, the cutting line should be replaced when line becomes worn to less than 3 inches in length from the edge of each side of the cutting head.

WARNING: Use only 0.095 inch (2.4

mm)diameter WEED EATER brand cut length line. Never use wire, rope, string, etc., which can break off and become a dangerous mis- sile.

1.Remove and discard worn line before installing new line.

2.Clean entire surface of cutting head.

3.Insert ends of line into the two guide holes on front of cutting head.

Guide

Hole

Guide

Hole

4.Continue to feed line through the guide holes until the line is fully extended through the side exit holes.

Side Exit Hole

Side Exit

Hole

5.Pull ends of line until line is tight. Correctly installed line will be the same length on both ends.

REPLACING THE CUTTING HEAD

1.Align hole in the dust cup with the hole in the side of the gearbox by rotating the dust cup.

2.Insert a small screwdriver into aligned holes. This will keep the shaft from turning while removing and installing trimmer head.

Screwdriver

3.While holding the screwdriver in position, remove trimmer head by turning clockwise (looking from bottom of unit).

4.Thread replacement trimmer head onto the shaft by turning counterclockwise. Tighten until secure.

5.Remove the screwdriver.

CARBURETOR IDLE SPEED ADJUSTMENT

WARNING: Keep others away when making idle speed adjustments. The trimmer head will be spinning during this procedure. Wear your protective equipment and observe all safety precautions.

The carburetor has been carefully set at the factory. Adjustments may be necessary if you notice any of the following conditions:

S Engine will not idle when the throttle is re- leased.

Make adjustments with the unit supported so the cutting attachment is off the ground and will not make contact with any object. Hold the unit by hand while running and making ad- justments. Keep all parts of your body away from the cutting attachment and muffler.

To adjust idle speed:

Allow engine to idle. Adjust speed until engine runs without stalling (idle speed too slow).

S Turn idle speed screw clockwise to in- crease engine speed if engine stalls or dies.

STurn idle speed screw counterclockwise to decrease engine speed.

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Contents Manual de Instrucciones Manuel d’Instructions Identification of Safety Symbols Safety Rules Operator SafetyCutting Safety Unit / Maintenance SafetyFuel Safety Transporting and StorageAdjusting the Handle AssemblyShaft Assembly Attaching ShieldOperation Fuel Requirements HOW to Stop Your UnitHOW to Start Your Unit Starting a Warm EngineOperating Position Starting a Flooded EngineCutting Methods Maintenance Carburetor Idle Speed Adjustment Service and AdjustmentsLine Replacement Replace Spark PlugEngine Seasonal StorageFuel System OtherTroubleshooting Table Cause Remedy Limited Warranty Canada, contactIntermediate 125 hours Extended 300 hours

545186797, SST25C specifications

The Weed Eater SST25C, model number 545186797, is a versatile and reliable trimmer designed for demanding yard work. This gas-powered string trimmer combines affordability, lightweight construction, and user-friendly features, making it a preferred choice for homeowners and gardening enthusiasts alike.

One of the standout features of the SST25C is its 25cc two-stroke engine, which delivers ample power for various trimming tasks. This engine is designed for efficiency, providing a good balance between performance and fuel consumption. Users can expect to complete lawn care tasks without worrying excessively about refueling.

The SST25C employs a flexible bend shaft, which enhances maneuverability around flower beds, fences, and other obstacles in the yard. This design is particularly beneficial for reaching tight spaces where traditional straight shaft trimmers may struggle. The lightweight frame further adds to its ease of use, reducing fatigue during longer trimming sessions.

In terms of cutting technology, the Weed Eater SST25C features a dual line feed head. This system allows for quicker and smoother line advancement, helping the trimmer achieve clean cuts and efficient trimming. The ability to easily replace the cutting line means minimal downtime, ensuring that users can get back to work swiftly.

Ergonomics play a crucial role in the design of the SST25C. It comes equipped with a comfortable handle that provides a firm grip, allowing for extended use without discomfort. The controlled throttle response ensures that users can easily adjust the power to their need, while the lightweight structure minimizes strain on the arms and back.

Additionally, the SST25C has a simple starting mechanism, which many users appreciate. Its design incorporates a straightforward pull cord system that minimizes effort during startup, making it accessible even for those who may not be mechanically inclined.

Overall, the Weed Eater SST25C, 545186797, is an excellent choice for those looking to maintain their lawns with efficiency and ease. Combining power, lightweight construction, and ergonomic design, this trimmer stands out as a reliable tool for tackling any trimming job. Whether it's edging around sidewalks or clearing tough weeds, the SST25C promises to deliver superior performance and satisfaction.
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