Stihl FSE 41 Manual

The Stihl FSE 41 is a lightweight, battery-powered electric string trimmer designed for residential lawn and garden maintenance. It features a brushless motor for efficiency and durability, an adjustable telescopic shaft for user comfort, an Easy2Start system, an automatic line feed (AutoCut C 4-2), and compatibility with the Stihl AK series battery system. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Brushless electric motor, Adjustable telescopic shaft, AutoCut C 4-2 cutting head, AK battery interface, Safety guard, Handle with controls.

Feature	Description
Motor Type	Brushless electric motor for high efficiency and long life
Power Source	STIHL AK series lithium-ion battery (sold separately)
Shaft	Telescopic, adjustable for user height
Cutting Head	AutoCut C 4-2, automatic line feed
Start System	Easy2Start (simple push-button start)
Handle	Ergonomic loop handle with trigger lockout
Guard	Protective debris shield
Weight (without battery)	Approx. 3.1 kg (6.8 lbs)
Sound Power Level	Low noise operation (typically < 85 dB(A))
Vibration	Low vibration design

Assembly & Preparation

Unpack and inspect all parts. Assemble on a clean, flat surface.

1. Attach the shaft: Extend to desired length and lock securely.
2. Install the handle: Slide onto shaft and tighten clamp.
3. Mount the guard: Align with mounting points on cutting head housing.
4. Install the battery: Insert compatible AK battery into battery compartment until it clicks.
5. Load trimmer line: Follow instructions for AutoCut C 4-2 head.

WARNING! Do not assemble with battery installed. Ensure all fasteners are tight before use.

First-Time Operation

Before first use, fully charge the battery. Wear appropriate personal protective equipment (PPE).

1. Insert a fully charged AK battery.
2. Hold trimmer firmly with both hands.
3. Press and hold the trigger lockout, then squeeze the trigger to start.
4. Practice basic swinging technique in a clear area.
5. Adjust shaft length for comfortable, balanced operation.

CAUTION! Keep bystanders and pets at a safe distance. Do not operate in wet conditions.

Specifications

• Model: FSE 41
• Power Type: Cordless Electric (Battery)
• Motor: Brushless
• Recommended Battery: STIHL AK Series
• Cutting Swath: Approx. 30 cm (12 inches)
• Line Diameter: 1.6 mm (0.065 in)
• Shaft: Telescopic, adjustable
• Sound Pressure: < 85 dB(A) typical
• Vibration (ah, K): < 2.5 m/s²
• Weight (without battery): ~3.1 kg (6.8 lbs)

Controls and Functions

Main controls located on the handle. Trigger: Squeeze to run, release to stop. Trigger Lockout: Must be depressed before trigger can be engaged. Battery Release Button: Press to remove battery. Telescopic Shaft Lock: Lever to adjust and lock shaft length.

LED Indicators: On battery or tool may indicate charge status or errors.

AutoCut Head: Automatically advances line when tap button on ground during operation. Manual bump feed also available.

Battery & Charging

Use only STIHL AK series lithium-ion batteries and approved chargers (e.g., AL 101, AL 300).

1. Charging: Connect charger to power outlet, insert battery. LED indicates charging progress.
2. Battery Installation: Slide into compartment until it clicks.
3. Removal: Press battery release button and slide out.
4. Storage: Store battery in cool, dry place, partially charged if long-term.

Tip: Have a spare charged battery for extended work sessions.

Cutting Techniques

For trimming grass and light weeds.

1. Hold trimmer at a slight angle so the tip of the line does the cutting.
2. Use a smooth, sweeping motion from side to side.
3. Keep cutting head parallel to ground and just above grass level.
4. To advance line: Tap cutting head lightly on ground while motor is running at high speed.
5. Avoid cutting against hard surfaces (walls, fences) to prevent rapid line wear.
6. For edging, tilt trimmer so line is vertical.

WARNING! Never operate without guard. Do not use for cutting woody plants or dense vegetation.

Safety Features

Trigger Lockout: Prevents accidental starting. Guard: Protects operator from debris. Safety Instructions: Follow all warnings in manual. Personal Protective Equipment (PPE): Always wear eye protection, long pants, sturdy shoes, and hearing protection if needed.

Care & Maintenance

Disconnect battery before any maintenance. Clean exterior with a damp cloth. Keep air vents clear of debris. Inspect cutting head and guard for damage. Replace worn or damaged trimmer line. Check all fasteners for tightness periodically.

CAUTION! Do not use water or solvents to clean motor compartment. Store in a dry place.

Regulatory Information

Complies with relevant machinery directives and electromagnetic compatibility (EMC) standards. The STIHL FSE 41 is intended for residential use by consumers. STIHL is a registered trademark. Battery and charger contain lithium-ion cells; follow local regulations for disposal. For support, visit www.stihl.com or contact your local authorized STIHL dealer.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Trimmer does not start	Battery empty, not inserted, lockout not engaged	Charge battery, ensure fully inserted, press trigger lockout.
Line does not advance	Line too short, head clogged	Tap head on ground, clean head, reload with fresh line.
Reduced run time	Old/battery, heavy load, cold temps	Use fully charged battery, avoid overly dense vegetation, warm battery if cold.
Excessive vibration/noise	Damaged cutting head, loose parts	Inspect head for damage, tighten all screws and clamps.
Motor stops under load	Overheating, battery protection	Allow tool to cool, use a higher capacity AK battery.

Service: For repairs, contact an authorized STIHL servicing dealer. Do not disassemble motor.

Support: www.stihl.com - Find your local dealer.