Maintenance

WARNING: Disconnect the spark plug before performing maintenance except for carburetor adjustments.

HELPFUL TIP

IMPORTANT: Have all

repairs other than the rec- ommended maintenance described in the instruction manual performed by an authorized service dealer.

If any dealer other than an authorized service dealer performs work on the product, Electrolux Home Products, Inc., may not pay for repairs under war- ranty. It is your responsibility to maintain and perform general maintenance.

CHECK FOR LOOSE

FASTENERS AND PARTS

SSpark Plug Boot S Air Filter

S Housing Screws

S Assist Handle Screw S Debris Shield

CHECK FOR DAMAGED OR WORN PARTS

Contact an authorized service dealer for re- placement of damaged or worn parts.

SSTOP Switch -- Ensure STOP switch func- tions properly by pushing and holding the switch in the STOP position. Make sure en-

gine stops. Restart engine and continue.

SFuel Tank -- Discontinue use of unit if fuel tank shows signs of damage or leaks.

SDebris Shield -- Discontinue use of unit if debris shield is damaged.

INSPECT AND CLEAN UNIT AND DE- CALS

S After each use, inspect complete unit for loose or damaged parts. Clean the unit and decals using a damp cloth with a mild deter- gent.

SWipe off unit with a clean dry cloth.

CLEAN AIR FILTER

A dirty air filter decreases engine perform- ance and increases fuel consumption and harmful emissions. Always clean after every 5 hours of operation.

1.Clean the air filter cover and the area around it to keep dirt from falling into the carburetor chamber when the cover is opened.

2.Open air filter cover by pushing button

(see illustration). Remove air filter. NOTE: To avoid creating a fire hazard or producing harmful evaporative emissions, do not clean filter in gasoline or other flammable solvent.

3.Wash the filter in soap and water.

4.Allow filter to dry.

5.Replace air filter and close cover.

Button Air Filter

Air Filter Cover

MUFFLER AND SPARK ARREST- ING SCREEN

WARNING: The muffler on this prod- uct contains chemicals known to the State of California to cause cancer.

As your unit is used, carbon deposits build up on the muffler and spark arresting screen. For normal homeowner use, however, the muffler and spark arresting screen will not re- quire any service. After 50 hours of use, we recommend that your muffler be serviced or replaced by your authorized service dealer.

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 discard.

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.

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.