Weed Eater MX550 Stop Switch, Primer Bulb, Choke, Before Starting Engine Fueling Engine

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STOP SWITCH

The STOP switch is used to stop the engine. To stop the engine, push and hold the switch in the STOP position until the engine stops.

PRIMER BULB

The PRIMER BULB removes air from the car- buretor and fuel lines and fills them with fuel. This allows you to start the engine with fewer pulls on the starter rope. Activate the primer bulb by pressing it and allowing it to return to its original form.

CHOKE

The CHOKE helps to supply fuel to the engine to aid in cold starting. Activate the choke by moving the choke lever to the FULL CHOKE position. After the engine attempts to start, move the choke lever to the HALF CHOKE position. Once engine has started, move the choke lever to the RUN position.

BEFORE STARTING ENGINE

WARNING: Be sure to read the fuel information in the safety rules before you be- gin. If you do not understand the safety rules, do not attempt to fuel your unit. Call 1-800-554--6723.

FUELING ENGINE

WARNING: Remove fuel cap slowly when refueling.

HELPFUL TIP

To obtain the correct oil mix ratio, pour 3.2 ounces of 2-cycle synthetic oil into one gallon of fresh gas.

This engine is certified to operate on unleaded gasoline. Before operation, gasoline must be mixed with a good quality synthetic 2-cycle air-cooled engine oil designed to be mixed at a ratio of 40:1. Poulan/WEED EATER brand synthetic oil is recommended. Mix gasoline and oil at a ratio of 40:1. A 40:1 ratio is obtained by mixing 3.2 fluid ounces (95 ml) of oil with 1 gallon (4 liters) of unleaded gasoline. DO NOT USE automotive oil or marine oil. These oils will cause engine damage. When mixing fuel, follow instructions printed on container. Once oil is added to gasoline, shake container momentarily to assure that the fuel is thoroughly mixed. Always read and follow the safety rules relating to fuel before fueling your unit.

CAUTION: Never use straight gasoline in your unit. This will cause permanent engine damage and void the limited warranty.

FUEL REQUIREMENTS

This engine requires the use of minimum 87 octane [R+M]/2 clean gasoline.

IMPORTANT

Use of alcohol blended fuels (called gasohol or using ethanol or methanol) can cause major en- gine performance and durability problems.

WARNING: Alternative fuels (not gas- oline) such as E--15 (15% alcohol), E--20 (20% alcohol), E--85 (85% alcohol) are NOT classified as gasoline and are NOT approved for use in 2--stroke gasoline engines. Use of alternative fuels will cause problems such as: improper clutch engagements, overheating, vapor lock, power loss, lubrication deficiency, deterioration of fuel lines, gaskets and internal carburetor components, etc. Alternative fuels cause high moisture absorption into the fuel/oil mixture leading to oil and fuel separation.

HELPFUL TIP

If your engine switch reads “push to stop”, it is always in the ON position.

HOW TO STOP YOUR UNIT

STo stop the engine, push and hold the STOP switch in the STOP position until the engine stops.

SIf engine does not stop, move choke lever to FULL CHOKE position.

HOW TO START YOUR UNIT

WARNING: The trimmer head will turn while starting the engine. Avoid any con- tact with the muffler. A hot muffler can cause serious burns.

HELPFUL TIP

If your engine still does not start after following these instructions, please call 1-800-554-6723.

STARTING A COLD ENGINE (or a warm engine after running out of fuel)

Starting Position

1.Set unit on a flat surface.

2.Slowly press the primer bulb 6 times.

3.Move choke lever to the FULL CHOKE position.

4.Squeeze the throttle trigger fully and hold through all remaining steps.

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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 StorageOperation AssemblyAdjusting the Handle Attaching ShieldHOW to Start Your Unit Stop SwitchHOW to Stop Your Unit Primer BulbOperating Position Starting a Warm EngineStarting a Flooded Engine Trimmer Line AdvanceCutting Work area Cutting MethodsTip of line does Inches 8 cm above groundMaintenance Replacing the Line Service and AdjustmentsCarburetor Idle Speed Adjustment Replacing the Cutting HeadEngine Seasonal StorageFuel System OtherTroubleshooting Table Cause Remedy Limited Warranty Canada, contactIntermediate 125 hours Extended 300 hours

545186834, MX550 specifications

The Weed Eater MX550, model number 545186834, is a powerful and efficient string trimmer designed for both residential and light commercial use. This reliable tool is engineered to provide excellent cutting performance, ease of use, and versatility, catering to various lawn care needs.

One of the standout features of the MX550 is its robust 25cc two-cycle engine. This powerful engine ensures optimal performance, allowing users to tackle tough grass, weeds, and overgrown areas with ease. The engine delivers impressive power while remaining lightweight, which minimizes operator fatigue during extended use.

The MX550 is equipped with a 16-inch cutting swath that efficiently covers large areas in a short amount of time, making it ideal for homeowners or landscapers with sizable properties. This wider cutting path allows users to reduce the time spent trimming, thereby increasing productivity. The tool is compatible with both regular trimmer line and heavy-duty line, catering to different cutting scenarios based on user preference.

Innovative technology is featured in the MX550 with its easy-to-load, bump-feed head. This design simplifies line replacement, allowing users to quickly and efficiently reload the trimmer line without the frustration often associated with traditional systems. The bump-feed function eliminates downtime, ensuring that the trimmer is always ready for action.

Moreover, the Weed Eater MX550 comes with adjustable handlebars, providing a comfortable grip for users of all heights. This ergonomic feature enhances control and maneuverability, making it easier to work in tight spaces or navigate around obstacles such as trees and flower beds.

This model also prioritizes user safety and convenience. It features a clear debris shield that protects the operator from debris while providing a clear view of the cutting area. The trimmer’s balanced design and lightweight frame reduce strain on the user, making it an ideal choice for extended periods of operation.

Additionally, the MX550 is designed for easy maintenance, with accessible components that allow for straightforward cleaning and servicing. This ensures the longevity of the trimmer, keeping it in peak operating condition for years to come.

In summary, the Weed Eater MX550, 545186834, combines power, versatility, and user-oriented design features to create an effective string trimmer for a range of trimming tasks. Whether you are a homeowner looking to maintain your lawn or a professional landscaper seeking reliable equipment, the MX550 stands out as a dependable choice in the vast market of outdoor power tools.
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