Ryobi 990r manual Changing the OIL, Recommended Fuel Type, Definition of Blended Fuels

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OIL & FUEL INFORMATION (Continued)

O-ring

Full (100 ml/3.4 oz)

Add Oil

Fig. 17

CHANGING THE OIL

For a new engine, change the oil after the first 10 hours of operation. Thereafter, change the oil after every 25 hours or before storing the unit for an extended period of time.

Change the oil while the engine is still warm. The oil will flow freely and carry away more impurities.

Change the oil as follows:

1.Remove the oil fill plug / dipstick.

2.Pour the oil into a container by tipping the trimmer in a vertical position (Fig. 18). Be sure to allow ample time for complete drainage. Dispose of oil properly.

Fig. 18

3.Fill the crankcase, with new oil of the proper type, to the top of the dipstick. Use the bottle saved from the initial use.

4.Reinstall the oil fill plug / dipstick and tighten securely.

NOTE: Make sure the O-ring is in place on the oil fill plug when checking and changing the oil.

NOTE: To prevent extensive engine wear or damage, always maintain the proper oil level in the crankcase. Never operate the engine with oil level below the bottom of the dipstick.

RECOMMENDED FUEL TYPE

WARNING

Fuel is extremely flammable and its vapors can explode if they are ignited. Always stop the engine and allow it to cool before filling the fuel tank. Do not smoke while filling the tank. Keep sparks and open flames away from the area.

Fill the fuel tank, using clean, fresh, unleaded gasoline.

NOTE: Alcohol blended fuel absorbs moisture (water). As little as 1% moisture in the fuel can cause fuel to separate and form acids when stored.

If this type of fuel must be used, use fresh fuel (less than 60 days old).

DEFINITION OF BLENDED FUELS

Today's fuels are often a blend of gasoline and one or more oxygenates such as ethanol, methanol or MTBE (ether).

USE OF BLENDED FUELS

If you choose to use a blended fuel or its use is unavoid- able, the following precautions are recommended.

1.Always use fresh fuel.

2.Use the special additive GASOHOL GAS TREAT- MENT® (by Gold Eagle) or an equivalent to inhibit corrosion.

3.Drain tank and run engine dry before storing the unit.

USE OF FUEL ADDITIVES

The use of fuel additive such as STA-BIL®Gas Stabilizer or an equivalent, will inhibit corrosion and minimize the for- mation of gum deposit. Add (23 ml) 0.8 oz per gallon of fuel per instructions on container. NEVER add fuel addi- tives directly to the unit's fuel tank. Using a fuel additive can keep fuel fresh for up to six (6) months.

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Contents 990r Introduction Table of Contents Safety Warnings California Emission RegulationsFuel and PRE-OPERATIONAL Other Safety Warnings OperationalSaftey Warnings for Brush Blade During USE After USESafety and International Symbols SymbolBrushcutter Safety Assembly Instructions Adjusting the J-HANDLEInstalling the Shoulder Strap Installing the Brush Blade Installing the Line Spool Blade LocatingMark Installing the Lower Attachment Boom Operating Split Boom CouplerRemoving the Lower Attachment Boom OIL & Fuel Information Recommended OIL TypeAdding OIL to Crankcase Initial USE Checking the OILChanging the OIL Recommended Fuel TypeDefinition of Blended Fuels USE of Blended FuelsSTARTING/STOPPING Instructions Throttle TriggerPosition RopeAdjusting the Trimming Line Length Using the Brush BladeOperating Instructions Decorative TrimmingMaintenance and Repair Instructions Maintenance Schedule Frequency Maintenance Required Refer toRewinding the Existing Reel Correct Line to UseRemoving the Existing Reel Bump Knob Inner ReelReinstalling the Reel Installing a Prewound ReelWinding the Existing Reel Gear Housing Service Fill PlugAIR Filter Maintenance ScrewAir Filter Screws Choke LeverCarburetor Adjustment Adjusting the CarburetorAir Filter Maintenance Final High Speed Mixture Needle AdjustmentINSPECTING/CLEANING the Muffler Lean Adjust to Midpoint RichRemoving Muffler Inspection and Cleaning Muffler ReassemblyChecking Spark Arrester Screen Torque the screw to 15-20 inlb 1.7-2.2 NmChecking / Adjusting Valve to Rocker ARM Clearance Replacing the Spark PlugScrew Screws Adjusting Nuts Rocker Arm Valve Flat Feeler GaugeCleaning and Storage SpecificationsCold Torque Specifications EngineTroubleshooting Problem Cause ActionCalifornia Emission Control Warranty Statement Your Warranty Rights and ObligationsLimited Two-Year Warranty

990r specifications

The Ryobi 990R is a powerful and versatile cordless tool that has gained popularity among both DIY enthusiasts and professional users alike. Designed to offer convenience and efficiency, this innovative unit is equipped with a range of features that cater to different applications.

One of the standout characteristics of the Ryobi 990R is its powerful motor. With a robust design, it delivers ample torque and speed, enabling users to tackle a variety of tasks, from cutting through tough materials to drilling precise holes. The motor is powered by a high-capacity lithium-ion battery, which is known for its longevity and quick recharge time. This ensures that users can work longer without frequent interruptions, making the 990R an ideal choice for demanding projects.

Another notable feature of the Ryobi 990R is its ergonomic design. Lightweight and easy to maneuver, the unit minimizes user fatigue, especially during extended use. The integrated rubber grip offers enhanced comfort and control, allowing for greater precision when working on intricate tasks. This commitment to user comfort makes it suitable for both novice and experienced users.

The 990R also incorporates advanced technology that enhances its performance. The unit features variable speed settings, allowing users to adjust the tool’s speed according to the task at hand, whether it’s a delicate job or a high-powered application. Additionally, the tool is equipped with a built-in LED light that illuminates the work area, ensuring visibility in dimly lit spaces and improving overall accuracy.

For added versatility, the Ryobi 990R is compatible with a wide range of attachments and accessories. This allows users to customize the tool according to their specific needs, whether they require a drill, sander, or impact driver. The quick-change chuck system further enhances efficiency, enabling users to switch between accessories in seconds.

Durability is another defining characteristic of the Ryobi 990R. Constructed with high-grade materials, it is designed to withstand demanding working conditions without compromising performance. This resilience is crucial for professionals who rely on their tools for everyday use.

In summary, the Ryobi 990R stands out in the crowded tool market due to its powerful motor, ergonomic design, advanced technologies, and durability. Whether for home improvement projects or professional applications, it offers reliability and performance that users can trust. As Ryobi continues to innovate, the 990R remains a solid choice for anyone looking to enhance their toolkit.
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