Ryobi 875r Replacing the Spark Plug, Spark Arrestor Maintenance, ACCESSORIES/REPLACEMENT Parts

Page 24

MAINTENANCE AND REPAIR INSTRUCTIONS

REPLACING THE SPARK PLUG

Use only genuine Ryobi spark plugs. The correct air gap is 0.025 in. (0.655 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 the cap from the spark plug.

2.Clean dirt from 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 0.025 in. (0.655 mm.) using a feeler gauge (Fig. 44).

0.025 in.

(0.655 mm.)

Fig. 44

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

4.Install a correctly gaped 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.

NOTE: A replacement spark plug Part # 180852 can be purchased from your local authorized dealer.

SPARK ARRESTOR MAINTENANCE

1.Remove the muffler cover. See Rocker Arm Clearance, Pg. 22.

2.With a flat blade screwdriver or Torx T20 bit, remove the screw attaching the spark arrestor cover to the muffler (Fig. 45).

Muffler

Spark Arrestor Screen

Tab Screw

Spark Arrestor Cover

Slot

Fig. 45

3.Pull the tab on the spark arrestor cover out of the muffler. Remove the spark arrestor cover.

4.Remove the spark arrestor screen from the spark arrestor cover.

5.Clean the spark arrestor screen with a wire brush, or replace.

6.Reinstall the spark arrestor screen, spark arrestor cover, and screw.

NOTE: A replacement spark arrestor screen Part # 180890 can be purchased from your local authorized dealer.

ACCESSORIES/REPLACEMENT PARTS

4-Cycle Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181786

Oil Fill Plug / Dipstick . . . . . . . . . . . . . . . . . . . . . 182378

Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180852

Spark Arrestor Screen . . . . . . . . . . . . . . . . . . . . . 180890

Replacement Line Cartridge . . . . . . . . . . . . . . . . 181460

Inner Reel Spring . . . . . . . . . . . . . . . . . . . . . . . . 181465

Bump Head Knob Assembly . . . . . . . . . . . . . . . . 181468

Fuel Cap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181083

Shoulder Harness . . . . . . . . . . . . . . . . . . . . . . . . 682075

Click-Link Coupler . . . . . . . . . . . . . . . . . . . . . . . 181616

24

Image 24
Contents OPERATOR’S Manual Table of Contents IntroductionCalifornia Emission Regulations Spark ArrestorSymbol Meaning Safety Warnings for GAS TrimmersRules for Safe Operation Before OperatingOther Safety Warnings While OperatingSafety and International Symbols Symbolmeaning Safety Alert SymbolFor Service INFORMATION, Call Unleaded FuelON/OFF Stop Control HOT Surface WarningSharp Blade Choke Control Know Your Unit ApplicationsAssembly Instructions Adjusting the J-HANDLEOIL and Fuel Information Recommended OIL TypeAdding OIL to Crankcase Initial USE Using Blended Fuels Using Fuel AdditivesRecommended Fuel Type Fueling UnitSTARTING/STOPPING Instructions Starting InstructionsStopping Instructions Cold Start First Start of the Day or Engine Ran Out of FuelInstalling the Cutting Attachment or Add-Ons Operating InstructionsOperating the CLICK-LINKSYSTEM Removing the Cutting Attachment or Add-OnsAdjusting Trimming Line Length Holding the TrimmerTips for Best Trimming Results Maintenance and Repair Instructions Maintenance ScheduleFrequency Maintenance Required Refer to Decorative TrimmingLine Installation for the Speedspool Winding the Inner Reel With New LineInstalling a Prewound Reel Releasing the Inner ReelSpeedspool Replacement Parts Cleaning the SpeedspoolChecking the OIL Level Changing the OILAIR Filter Maintenance Cleaning the Air FilterCarburetor Adjustment Clean Air FilterAdjust Idle Speed Screw Check FuelRocker ARM Clearance Remove the rocker arm cover and gasketRocker Arms Adjusting Nuts Feeler Gauge Gasket Spark Arrestor Maintenance ACCESSORIES/REPLACEMENT PartsReplacing the Spark Plug Cleaning and Storage CleaningStorage Long Term StorageTroubleshooting U S ET I O N Specifications EnginePage Owners Warranty Responsibilities Manufacturers Warranty CoverageOPERATOR’S Manual Part no REV. a

875r specifications

The Ryobi 875R is a robust and efficient string trimmer that has garnered attention for its reliability and performance. Designed for homeowners and landscaping professionals alike, this trimmer offers a powerful solution for maintaining lawns and gardens with ease.

One of the standout features of the Ryobi 875R is its powerful gas engine, which provides ample power for cutting through thick grass and weeds without bogging down. This gasoline-powered trimmer operates efficiently, making it suitable for larger areas where electric trimmers might struggle. The engine is designed for easy starting, ensuring that users can get to work quickly without the frustration of repeated pulls on the starter cord.

The Ryobi 875R also boasts a lightweight, ergonomic design that enhances maneuverability. Its balance and reduced weight allow for longer use without causing undue strain on the user’s arms and back. The adjustable handle is another ergonomic feature, enabling users to find the perfect grip and position for their comfort during extended trimming sessions.

A significant technological highlight of the 875R is its dual-string head. This feature allows for a wider cutting swath, making it possible to trim more grass in less time. The trimmer excels in tackling difficult areas of the yard, from edges along sidewalks to dense patches in flower beds. This dual-string system is also compatible with various types of trimmer lines, providing versatility based on user preference and job requirements.

Another key characteristic of the Ryobi 875R is its durable construction. The materials used in its design are intended to withstand the rigors of regular use, protecting it against wear and tear. Additionally, the trimmer is equipped with features such as a protective shield that safeguards the user from flying debris while enhancing safety during operation.

Maintenance is simplified with the Ryobi 875R, as it features an easy-access air filter and fuel cap that facilitate routine checks and refills. This ensures that users can dedicate their time to trimming rather than struggling with upkeep.

In summary, the Ryobi 875R stands out in the market for its powerful engine, ergonomic design, dual-string head technology, and durability. Whether tackling overgrown lawns or maintaining garden borders, this string trimmer delivers the performance and ease of use that both novices and seasoned landscapers appreciate.