Ryobi RCS4040B User Manual

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Ryobi RCS4040B Specifications

General

Power Source	Battery
Motor	Brushless
Voltage	40V
Chain Speed	15 m/s
Type	Chainsaw
Bar Length	40 cm (16 inches)
Weight	9.5 lbs
Chain Gauge	0.043 in
Oil Tank Capacity	0.2 L

Summary

Instruction

Intended Use

General Safety Rules

Read All Instructions

Know your tool. Read the operator's manual carefully. Learn the saw's applications and limitations as well as the specific potential hazards related to this tool.

Specific Safety Rules

Service

Glossary of Terms

Specification

Assembly

Unpacking

Carefully remove the product and any accessories from the box. Make sure that all items listed in the packing list are included.

Adjusting the Chain Tension

This section details how to properly adjust chain tension for both cold and warm chains.

Cold Chain

A cold chain is correctly tensioned when there is no slack on the underside of the guide bar, the chain is snug, and it can be turned by hand without binding.

Warm Chain

During normal saw operation, the temperature of the chain increases. The drive links of a correctly tensioned warm chain will hang approximately 1.2mm out of the bar groove.

Operation

Know Your Chainsaw

The safe use of this product requires an understanding of the information on the product and in this operator's manual.

Fueling and Refueling

To reduce the risk of fire and burn injury, handle fuel with care. It is highly flammable.

Mixing the Fuel

This product requires pre-mixing petrol and 2-stroke lubricant. Use a 50:1 ratio.

Filling the Fuel Tank

Clean the surface around the fuel cap to prevent contamination. Pour fuel mixture into the tank.

Adding Bar and Chain Lubricant

Use RYOBI, or a quality brand of bar and chain lubricant. Fill the lubricant tank every time you fuel the engine.

Operating the Chain Brake

Check the operating condition of the chain brake prior to each use.

Starting the Engine

Stopping the Engine

Release the throttle trigger and let the engine return to idle. To stop the engine, move the ignition switch to the stop (0) position.

Adjusting Idle Speed

The idle speed adjustment controls how much the throttle valve stays open when the throttle trigger is released.

Pull and Push

The reaction force of the saw is always opposite to the direction the chain is moving.

Kickback Precautions

Rotational kickback occurs when the moving chain contacts an object at the Kickback Danger Zone of the guide bar.

Preparing for Cutting

Proper Grip on Handles

Hold the saw firmly with both hands. Always keep your left hand on the front handle and your right hand on the rear handle.

Proper Cutting Stance

Balance your weight with both feet on solid ground. Keep left arm locked in a 'straight arm' position.

Work Area Precautions

Cut only wood or materials made from wood. Never allow children to operate the saw.

Basic Operating/Cutting Procedures

Felling Trees in Hazardous Conditions

Proper Procedure for Tree Felling

Pick your escape route (or routes in case the intended route is blocked). Clear the immediate area around the tree.

Removing Buttress Roots

A buttress root is a large root extending from the trunk of the tree above the ground. Remove large buttress roots prior to felling.

Bucking

Bucking is the term used for cutting a fallen tree to the desired log length.

Bucking with a Wedge

If the wood diameter is large enough for you to insert a soft bucking wedge without touching the chain, you should use the wedge to hold the cut open to prevent pinching.

Bucking Logs Under Stress

Make the first bucking cut 1/3 of the way through the log and finish with a 2/3 cut on the opposite side.

Overbucking

Begin from the top side of the log with the bottom of the saw against the log; exert light pressure downward.

Underbucking

Begin from the underside of the log with the top of the saw against the log; exert light pressure upward.

Branch Trimming and Pruning

Work slowly, keeping both hands on the saw with a firm grip. Maintain secure footing and balance.

Maintenance

Cutting Springpoles

A springpole is any log, branch, rooted stump, or sapling which is bent under tension by other wood so that it springs back if the wood holding it is cut or removed.

General Maintenance

Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents.

Lubrication

All of the bearings in this product are lubricated with a sufficient amount of high grade lubricant for the life of the unit.

Replacing the Guide Bar and Chain

Never start the engine before installing the guide bar, chain, clutch cover, and clutch drum.

Chain Maintenance

Check that the switch is in the STOP “0” position before you work on the saw.

Sharpening the Cutters

Be careful to file all cutters to the specified angles and to the same length, as fast cutting can only be obtained when all cutters are uniform.

Top Plate File Angle

CORRECT 30° – file holders are marked with guide marks to align file properly to produce correct top plate angle.

Side Plate File Angle

CORRECT 80° – Produced automatically if you use the correct diameter file in the file holder.

Backward Slope

Needs too much feed pressure; causes excessive wear to the bar and chain.

Maintaining Depth Gauge Clearance

Maintain the depth gauge at a clearance of 0.64mm. Use a depth gauge tool for checking the depth gauge clearances.

Maintaining the Guide Bar

Every week of use, turn over the guide bar on the saw to distribute the wear for maximum bar life.

Cleaning the Air Filter

Activate the chain brake. Remove the two screws holding the engine cover.

Cleaning the Starter Unit

Use a brush to keep the cooling vents of the starter assembly free and clean of debris.

Adjusting the Carburettor

Before adjusting the carburettor: Use a brush to clean the starter cover vents.

Cleaning the Engine

Clean the engine fins and flywheel fins with a brush periodically. Dangerous overheating of the engine may occur due to impurities.

Checking the Fuel Filter

Check the fuel filter periodically. Replace it if contaminated or damaged.

Replacing the Spark Plug

This engine uses a Champion RCJ4 or RCJ6Y or NGK BPMR7A with .025 in. electrode gap.

Inspecting/Cleaning the Spark Arrestor Screen

The muffler is equipped with a spark arrestor screen. A faulty spark arrestor screen can create a fire hazard.

Inspecting and Cleaning the Chain Brake

Always keep the chain brake mechanism clean by lightly brushing the linkage free from dirt.

Storing the Product

Clean all foreign material from the product. Store it in a well-ventilated place that is inaccessible to children.

Maintenance Schedule

Troubleshooting

Engine Will Not Start

Troubleshoot issues related to the engine failing to start, possible causes like spark plug or flooding.

Engine Starts But Will Not Accelerate Properly

Diagnose and resolve problems where the engine starts but fails to accelerate as expected.

Engine Starts, Then Dies

Identify causes and solutions when the engine starts and then stops running.

Engine Starts But Will Not Run Properly At High Speed

Address issues where the engine runs but performs poorly at high speeds.

Engine Does Not Reach Full Speed and/or Emits Excessive Smoke

Troubleshoot problems with engine not reaching full speed or producing excessive smoke.

Engine Starts, Runs, and Accelerates But Will Not Idle

Resolve issues where the engine runs and accelerates but does not idle correctly.

Chain Turns At Idle

Diagnose and fix the problem of the saw chain rotating when the engine is at idle.

Bar and Chain Running Hot and Smoking

Address causes and solutions for the bar and chain running hot and producing smoke.

Engine Starts and Runs, But Chain Is Not Rotating

Troubleshoot why the engine runs but the saw chain does not rotate.

Guarantee

Guarantee Conditions

This guarantee only applies provided that the product has been used in accordance with the manufacturer's recommendations under normal use and reasonable care.