Stihl F5 56 RC Manual

The Stihl F5 56 RC is a professional-grade, battery-powered grass trimmer designed for efficient and quiet lawn maintenance. It features the STIHL AK System for quick battery changes, an AutoCut C 6-2 cutting head, an adjustable telescopic shaft, an ergonomic harness, and an RC (Rapid Charger) system. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: STIHL AK battery, AutoCut C 6-2 cutting head, telescopic shaft, ergonomic harness, Rapid Charger (RC), on/off switch, and safety guard.

Feature	Description
AK Battery System	For quick, tool-free battery changes and compatibility
AutoCut C 6-2 Head	Automatic line advance for consistent cutting diameter
Telescopic Shaft	Adjustable length for user comfort
Ergonomic Harness	Distributes weight to reduce operator fatigue
Rapid Charger (RC)	For fast battery recharging
Safety Guard	Protects operator from debris
On/Off Switch	With safety lock-out to prevent accidental start
Battery Charge Indicator	Shows remaining battery capacity
Low Noise Operation	Designed for quiet use in residential areas
Lightweight Design	Easier handling and maneuverability

Assembly & Preparation

Unpack and inspect all contents. Ensure you have the trimmer, battery, charger, harness, and manual.

1. Attach the shaft: Extend the telescopic shaft to desired length and lock securely.
2. Install the cutting head: Align the AutoCut head with the drive shaft and secure according to instructions.
3. Attach the safety guard: Fit the guard onto the shaft above the cutting head.
4. Adjust the harness: Connect the harness to the trimmer and adjust straps for a comfortable fit.
5. Insert the battery: Push the AK battery into the battery compartment until it clicks.

WARNING! Always wear appropriate personal protective equipment (PPE): safety glasses, gloves, long pants, and sturdy shoes. Do not assemble near children or pets.

First-Time Operation

Before first use, fully charge the battery. Familiarize yourself with all controls.

1. Charge the battery: Connect the Rapid Charger to a power outlet and insert the battery. Charge until indicator shows full.
2. Perform a safety check: Ensure guard is secure, cutting head is properly attached, and area is clear of obstacles.
3. Start the trimmer: Press and hold the safety lock-out, then squeeze the trigger. Release the lock-out to run.
4. Practice handling: Get a feel for the weight and balance using the harness before beginning work.

CAUTION! Never operate the trimmer without the safety guard installed. Keep bystanders at a safe distance.

Specifications

• Model: F5 56 RC
• Power Source: STIHL AK Lithium-Ion Battery
• Cutting Width: Approx. 30 cm (with AutoCut C 6-2 head)
• Shaft: Telescopic, adjustable
• Weight (without battery): Approx. 4.5 kg
• Sound Pressure Level: Low noise design (specific dB value consult local documentation)
• Vibration Level: Reduced vibration system
• Charger: STIHL Rapid Charger (RC)
• Recommended Use: Domestic lawn and garden trimming

Controls and Settings

Main controls are located on the rear handle. The harness attachment point is on the main shaft.

Handle Controls: On/Off trigger switch with safety lock-out button. Battery charge indicator lights (on battery).

Adjustments: Telescopic shaft length. Harness strap length and attachment point. Cutting head angle (fixed on some models).

No User-Serviceable Electronic Settings: Speed is controlled by trigger pressure. No adjustable power settings.

Battery & Charging

Use only genuine STIHL AK batteries and the STIHL Rapid Charger (RC).

1. Charging: Insert battery into charger. Connect charger to a standard household outlet (100-240V). Charging time varies by battery capacity.
2. Battery Indicator: Check lights on battery to see charge level before use.
3. Storage: Store battery in a cool, dry place away from direct sunlight. Charge to approx. 40-60% for long-term storage.
4. Disposal: Do not dispose of in household waste. Recycle at an authorized STIHL dealer or battery recycling point.

Tip: For best performance and battery life, avoid completely draining the battery. Recharge when indicator shows one light remaining.

Cutting Techniques

Use a smooth, sweeping motion for best results.

1. Basic Trimming: Hold trimmer at a slight angle so the cutting line contacts grass tips. Swing from side to side.
2. Edging: Tilt trimmer so the cutting line is vertical to create a clean edge along paths and borders.
3. Avoiding Damage: Do not force the cutting line into hard objects like fences, walls, or tree bark.
4. Line Advance: The AutoCut head will automatically feed new line as needed when you tap it lightly on the ground while the tool is running at speed.
5. Tall Grass/Weeds: Use a slower, deliberate side-to-side motion, working in layers if necessary.

WARNING! Always be aware of the cutting zone. Never swing the trimmer above knee height or near feet.

Safety Features

Safety Lock-Out Trigger: Prevents accidental starting. The trigger must be unlocked before it can be pressed. Safety Guard: Essential for deflecting debris. Always keep it installed and in good condition. Harness: Reduces fatigue and improves control, lowering risk of loss of control.

Care & Maintenance

Regular maintenance ensures long life and safe operation. Always remove the battery before performing any maintenance.

1. After Each Use: Clean grass and debris from the cutting head, guard, and shaft with a brush or cloth.
2. Cutting Line: Check line length and replace spool when line is worn short. Use only STIHL genuine nylon line of the correct diameter.
3. Inspection: Regularly check for loose screws, cracks in the guard, or damage to the shaft.
4. Storage: Store in a dry, secure place out of reach of children.

CAUTION! Do not use water or high-pressure cleaners to clean the trimmer. Do not lubricate the cutting head unless specified in the manual.

Regulatory Information

This product complies with relevant machinery directives and electromagnetic compatibility (EMC) standards. The battery and charger comply with applicable electrical safety standards. STIHL is a registered trademark. For genuine spare parts, accessories, and service, contact an authorized STIHL dealer. Dispose of electrical equipment according to local regulations, not with household waste.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Trimmer does not start	Battery empty, not inserted correctly, safety lock not released	Charge battery; reinsert until it clicks; press and hold safety lock while squeezing trigger.
Reduced running time	Old/damaged battery, heavy load, cold conditions	Check battery health; avoid cutting very dense material; batteries have reduced capacity in cold weather.
Line does not advance	Line spool empty, line tangled, head dirty	Replace spool; clean head and remove tangles; tap head on ground while running at speed.
Excessive vibration	Damaged cutting head, loose components, bent shaft	Stop immediately. Check head for damage; tighten all screws; inspect shaft for bends.
Motor runs but head doesn't spin	Drive shaft disengaged, broken drive cable	Check shaft connection; for internal drive issues, contact authorized STIHL service.

Service: For repairs not covered in this manual, contact your local authorized STIHL dealer. Do not attempt to open the motor or electronic housing.

Support: Visit www.stihl.com for dealer locator, manuals, and more information.