Ryobi CS 3635 Chainsaw Manual

The Ryobi CS 3635 is a 36V (40V compatible) cordless electric chainsaw with a 35cm (14-inch) Oregon bar and chain, brushless motor technology, automatic oiling system, tool-less chain tensioning, and wrap-around handle for improved control. Ideal for light to medium-duty cutting tasks such as pruning, limbing, and cutting firewood. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Safety Information 3. Assembly & Setup 4. Specifications 5. Controls and Components 6. Operation Instructions 7. Chain Maintenance 8. Battery & Charging 9. Storage & Transport 10. Warranty Information 11. Troubleshooting

Features at a Glance

Key components: Brushless motor, 35cm Oregon bar and chain, automatic oiling system, tool-less chain tensioner, wrap-around handle, battery compartment, chain brake, and safety trigger.

Feature	Description
Power Source	36V Lithium-ion battery (compatible with 40V Ryobi system)
Bar Length	35cm (14 inches)
Chain Type	Oregon low-kickback safety chain
Motor Type	Brushless for increased efficiency and runtime
Oiling System	Automatic with manual override
Chain Tensioning	Tool-less side adjustment
Safety Features	Chain brake, safety trigger, hand guard
Weight (without battery)	Approximately 4.3 kg (9.5 lbs)
Handle	Wrap-around design for better control
Battery Indicator	LED lights on battery show charge level

Safety Information

Read all instructions before use. Always wear appropriate PPE.

Personal Protective Equipment: Wear safety glasses, hearing protection, gloves, steel-toe boots, and chainsaw chaps.
Work Area Safety: Keep bystanders and pets at least 15 feet away. Ensure secure footing.
Before Starting: Check chain tension, sharpness, and lubrication. Ensure battery is securely installed.
During Use: Hold with both hands. Do not cut above shoulder height. Beware of kickback.
After Use: Engage chain brake. Remove battery before maintenance or transport.

WARNING! Kickback can cause serious injury. Always grip firmly, maintain proper chain tension, and avoid contact with the tip of the bar.

Assembly & Setup

Unpack and inspect all parts. Assembly requires attaching the bar and chain, and tensioning the chain.

Install Bar and Chain: Place chain over sprocket, align bar with mounting studs, secure with side cover nuts.
Tension Chain: Use tool-less tensioning knob to adjust until chain snaps back when pulled from bar.
Fill Oil Reservoir: Use only bar and chain oil. Fill to MAX line.
Install Battery: Insert fully charged 36V/40V Ryobi battery until it clicks.
Test Safety Features: Verify chain brake engages when hand guard is pushed forward.

CAUTION! Ensure chain is installed with cutting teeth facing forward. Overtightening can damage bar and chain.

Specifications

Model: Ryobi CS 3635
Power: 36V Lithium-ion battery system
Bar Length: 35 cm (14 inches)
Chain Pitch: 3/8 inch low-profile
Chain Gauge: 0.050 inch
Oil Capacity: Approximately 150 ml
Sound Pressure: < 90 dB(A)
Vibration Level: < 2.5 m/s²
Weight (tool only): 4.3 kg (9.5 lbs)
Recommended Battery: Ryobi 36V/40V 4.0 Ah or higher

Controls and Components

Main Controls: Safety trigger, main power switch, chain brake lever, oiler button, battery release.

Front/Rear Handle: Contains safety trigger and main switch. Squeeze safety trigger first, then press power switch to operate.

Chain Brake: Engages automatically via inertia or manually by pushing hand guard forward. Oil System: Automatic lubrication during operation; manual override button for extra oil. Battery Compartment: Houses battery; includes LED charge indicator. Tensioning Knob: Located on side cover for tool-less chain adjustment.

Operation Instructions

Starting, cutting techniques, and stopping procedures.

Starting: Install battery. Ensure chain brake is disengaged. Squeeze safety trigger, then press power switch.
Basic Cutting: Use lower part of bar. Let chain do the work; avoid forcing. For limbs, cut from top down.
Kickback Prevention: Maintain firm grip. Do not let bar tip contact wood or other objects.
Stopping: Release power switch and safety trigger. Engage chain brake. Remove battery for extended stops.
Bucking & Limbing: Plan cuts. Use wedges for larger logs. Always cut at waist level or below.

Tip: Periodically check oil level and chain tension during extended use.

Chain Maintenance

Proper chain care ensures optimal performance and safety.

Sharpening: Use round file and guide. Maintain 30-degree angle. File all cutters evenly.
Tensioning: Chain should be snug against bar but pull freely. Adjust when chain sags.
Lubrication: Check oil level before each use. Use only recommended bar and chain oil.
Cleaning: Remove sawdust from bar grooves, oil ports, and sprocket cover after use.
Inspection: Regularly check for worn drive links, damaged cutters, and bar rail wear.

WARNING! Always remove battery before performing any maintenance. Wear cut-resistant gloves when handling chain.

Battery & Charging

Use only Ryobi 36V/40V Lithium-ion batteries and chargers.

Charging: Insert battery into charger. LED indicates charging status (red=charging, green=complete). Storage: Store battery at room temperature. For long-term storage, charge to 50%. Disposal: Do not dispose of in household waste. Recycle at authorized centers.

Storage & Transport

Store in dry, secure location out of reach of children.

CAUTION! Always remove battery and engage chain brake before storage or transport. Use bar guard or scabbard.

Warranty Information

Ryobi offers a limited warranty for residential use. Warranty period varies by region. Proof of purchase required. For warranty claims, contact Ryobi customer service or visit an authorized service center. This product is designed for DIY users; commercial use may void warranty.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Chainsaw won't start	Battery dead/not installed	Charge or install battery fully; ensure it's clicked into place.
Chain doesn't move	Chain brake engaged	Disengage chain brake by pulling hand guard back.
Poor cutting performance	Dull chain or low oil	Sharpen chain; refill oil reservoir.
Chain comes off bar	Loose chain tension	Stop immediately. Re-tension chain properly.
Excessive vibration	Damaged chain or bar	Inspect for damage; replace if necessary.
Automatic oiler not working	Clogged oil port or empty tank	Clean oil ports; refill with correct oil.
Battery drains quickly	Old battery or heavy use	Use higher capacity battery; allow tool to cool between uses.

Service: For repairs not covered in manual, contact Ryobi customer service: 1-800-525-2579 or visit www.ryobitools.com.