Ryobi 770rEB manual Replacing the Spark Plug, ACCESSORIES/REPLACEMENT Parts

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MAINTENANCE AND REPAIR INSTRUCTIONS

REPLACING THE SPARK PLUG

Use a Champion RDJ7Y spark plug (or equivalent).

The correct air gap is 0.020 inch (0.5 mm.). Remove the plug after every 50 hours of operation and check its condition.

1.Stop the engine and allow it to cool. Grasp the plug wire firmly and pull it from the spark plug.

2.Clean around the spark plug. Remove the spark plug from the cylinder head by turning a 5/8 in. socket counterclockwise.

3.Replace cracked, fouled or dirty spark plug. Set the air gap at 0.020 in. (0.5 mm.) using a feeler gauge (Fig. 39).

CAUTION: Do not sand blast, scrape, or clean electrodes. Grit in the engine could damage the cylinder.

4.Install a correctly gapped spark plug in the cylinder head. Tighten by turning the 5/8 in. socket clockwise until snug.

If using a torque wrench torque to;

110-120 in.•lb. (12.3-13.5 N•m). Do not over tighten.

0.020 in.

(0.5 mm.)

Fig. 39

ACCESSORIES/REPLACEMENT PARTS

2-Cycle Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147543

Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 610311

Replacement Line . . . . . . . . . . . . . . . . . . . . . . . 610375

Replacement Line Cartridge . . . . . . . . . . . . . . . . 153577

Inner Reel Spring . . . . . . . . . . . . . . . . . . . . . . . . 610317

Bump Head Knob Assembly . . . . . . . . . . . . . . . . 153066

Fuel Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180000

Edger Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . 613223

Shoulder Strap . . . . . . . . . . . . . . . . . . . . . . . . . . 682075

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Contents OPERATOR’S Manual Table of Contents IntroductionRules for Safe Operation California Emission RegulationsSpark Arrestor Arrestor KitBefore Operating Safety Warnings for GAS TrimmersWhile Operating While Operating with SWEEPER/BLOWER ADD-ON Other Safety WarningsWhile Operating with Edger ADD-ON For Service INFORMATION, Call Safety and International SymbolsSymbolmeaning Safety Alert Symbol Unleaded FuelIndicates OIL Symbolmeaning HOT Surface WarningSharp Blade Choke ControlAs a trimmer ApplicationsCutting grass and light weeds Assembly Instructions Installing and Adjusting the J-HANDLEInstalling the Cutting Attachment Shield OIL and Fuel Information Using Blended FuelsUsing Fuel Additives OIL and Fuel Mixing InstructionsStarting Instructions STARTING/STOPPING InstructionsStopping Instructions Operating the CLICK-LINK System Installing the Cutting Attachment or Add-OnsOperating Instructions Removing the Cutting Attachment or Add-OnsHolding the Trimmer Adjusting Trimming Line LengthTips for Best Trimming Results Holding the Unit with Edger ADD-ON Adjusting Edger Cutting DepthDecorative Trimming Tips for Best Edging ResultsOperating Tips When Using SWEEPER/BLOWER Holding the Unit with SWEEPER/BLOWER ADD-ONLine Installation Maintenance and Repair InstructionsMaintenance Schedule There are two methods to replace the trimming lineIndexing Teeth Installing a Prewound Reel Edger Blade ReplacementCleaning the Air Filter AIR Filter MaintenanceRemoving the Air Filter/Muffler Cover Carburetor Adjustment Replacing the Spark Plug ACCESSORIES/REPLACEMENT Parts110-120 in.lb .3-13.5 Nm. Do not over tighten Storage Cleaning and StorageCleaning Long Term StorageU S E TroubleshootingT I O N Specifications EnginePage Owners Warranty Responsibilities Manufacturers Warranty CoverageREV. a 12/98

770rEB specifications

The Ryobi 770rEB is a powerful and versatile brushcutter designed for both homeowners and professionals seeking an efficient tool to manage heavy vegetation and tough landscaping tasks. This model combines advanced technology with practicality to deliver impressive performance in various gardening applications.

At the heart of the Ryobi 770rEB is its robust 770W engine, which provides ample power for tackling dense undergrowth, thick grass, and challenging weeds. Its ergonomic design, coupled with a lightweight construction, ensures user comfort during extended periods of operation. The balance and handling of this brushcutter make it easy to maneuver, reducing fatigue and increasing productivity.

One of the standout features of the Ryobi 770rEB is its Easy Start technology. This innovation allows for a simplified starting process, so users can get to work without the frustration often associated with traditional pull-start engines. Additionally, the engine is designed with reduced vibrations, which minimizes strain on the operator’s hands and arms, enhancing overall comfort and control.

The cutting performance of the Ryobi 770rEB is further enhanced by its dual-line bump feed head, which allows for quick and easy line replacement. Users can effortlessly advance the cutting line simply by tapping the head on the ground, making it a user-friendly solution for maintaining a neat and tidy landscape. The 25.4cc 2-stroke engine offers high efficiency while keeping emissions low, adhering to environmental standards.

Moreover, the Ryobi 770rEB comes equipped with several cutting attachments, including blades for heavier brush and trees, providing adaptability for a variety of tasks. The inclusion of a shoulder harness enhances stability and adds comfort, allowing the user to distribute weight evenly during operation.

Building on durability, the Ryobi 770rEB features a sturdy construction that can withstand the trials of regular use. Its adaptable design ensures it meets the needs of various landscaping tasks, from trimming grass around flower beds to clearing overgrown areas.

In summary, the Ryobi 770rEB brushcutter stands out due to its powerful engine, ergonomic features, Easy Start technology, and versatility in handling different cutting tasks. Whether for home use or professional landscaping, it proves to be an essential tool for maintaining efficient and effective outdoor spaces.
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