Stihl 45 Hedge Trimmer Manual

The Stihl 45 Hedge Trimmer is a professional-grade, single-sided hedge trimmer designed for efficient and precise trimming of hedges and shrubs. It features a powerful engine, a robust cutting blade, anti-vibration system, and ergonomic handles for user comfort and control. Below are key sections for safety, features, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: Engine unit, cutting blade, anti-vibration system, throttle trigger, stop switch, fuel tank, and handle.

Safety Instructions

Read all instructions before operation. Wear appropriate personal protective equipment (PPE).

1. Always wear safety glasses, hearing protection, gloves, and sturdy footwear.
2. Inspect the trimmer before each use for damage or loose parts.
3. Ensure the cutting blade is not contacting any object before starting.
4. Keep bystanders, especially children and pets, at a safe distance.
5. Operate only in well-ventilated areas; be aware of fuel fumes.

WARNING! Risk of serious injury or death from blade contact or kickback. Never operate with one hand. Keep both hands on the handles.

Assembly & Preparation

Unpack and inspect all parts. Assemble according to the provided diagram.

1. Attach the handle: Secure with provided bolts using the correct tool.
2. Install the blade guard: Slide onto the blade when not in use.
3. Fuel mixture: Use fresh unleaded gasoline mixed with high-quality 2-stroke oil at a 50:1 ratio (check manual for exact specification).
4. Fill the fuel tank: Use a funnel to avoid spills. Securely close the cap.
5. Check the bar and chain oil: Fill the separate lubricant reservoir for blade lubrication.

CAUTION! Fuel is highly flammable. Refuel outdoors, with the engine off and cool. Wipe up any spills immediately.

Specifications

• Model: Stihl 45
• Type: Single-sided Hedge Trimmer
• Engine Power: 0.9 kW (1.2 bhp)
• Displacement: 27.2 cm³
• Cutting Length: 45 cm
• Tooth Spacing: 19 mm
• Weight: 5.2 kg (without fuel and oil)
• Fuel/Oil Mix: Gasoline and 2-stroke oil (50:1)
• Sound Pressure Level: Approx. 94 dB(A)
• Vibration Level: Left/Right Handle: < 2.5 m/s²

Controls and Operation

Familiarize yourself with all controls before starting the engine.

Controls: Stop Switch (I/O), Throttle Trigger Lockout, Throttle Trigger, Choke Lever, Primer Bulb, Decompression Valve (if equipped).

Starting Procedure (Cold Engine): 1. Move stop switch to "I" (On). 2. Press the fuel primer bulb 5 times. 3. Set the choke lever to the closed position. 4. Place the trimmer on a firm, flat surface. Hold the rear handle firmly with your left hand and place your right foot in the step area. 5. Pull the starter rope briskly until the engine fires. 6. Move the choke lever to the open position. 7. Pull the starter rope again to start the engine. Allow to warm up at idle for 30 seconds.

Stopping: Release the throttle trigger and press the stop switch to "O".

Fuel & Lubrication

Proper fuel mixture and blade lubrication are critical for performance and longevity.

1. Use only fresh, unleaded gasoline with a minimum octane rating of 89 (RON).
2. Mix with a high-quality 2-stroke engine oil meeting ISO-L-EGD or JASO FD standards at a 50:1 ratio.
3. Do not use fuel older than 30 days. Use a fuel stabilizer for long-term storage.
4. Check the blade lubrication oil level before each use. Use Stihl hedge trimmer oil or equivalent.
5. The automatic oiler lubricates the blade during operation. Manual oiler button is for additional lubrication.

Tip: Always shake the fuel can before refueling to ensure proper oil mixture.

Cutting Techniques

For best results and safety, follow proper cutting techniques.

1. Hold the trimmer with both hands, keeping a firm grip on the handles.
2. Stand in a stable position with feet shoulder-width apart.
3. Start cutting from the bottom of the hedge and work upwards.
4. Use a slow, sweeping motion from side to side. Let the blade do the work; do not force it.
5. For the top of the hedge, hold the blade parallel to the ground and sweep in an arc.
6. Cut thicker branches (up to the recommended diameter) with the base of the blade near the shear plate.
7. Avoid cutting above shoulder height to maintain control.

WARNING! Do not use the tip of the blade for cutting. Beware of kickback. Be alert for hidden wires or objects within the hedge.

Maintenance Schedule

Regular maintenance ensures optimal performance and safety.

Blade Sharpening: Use a round file of the correct size. Maintain the original cutting angle. Have sharpening done by a qualified technician if unsure.

Storage

Prepare the trimmer properly for storage to prevent damage.

1. Empty the fuel tank completely or add a fuel stabilizer to a full tank and run the engine for 2 minutes.
2. Clean the entire unit thoroughly, removing all plant sap and debris.
3. Apply a light coat of oil to the cutting blade to prevent rust.
4. Store in a dry, cool, and well-ventilated place, out of reach of children.
5. Place the blade guard on the cutting blade.

CAUTION! Never store the trimmer with fuel in the tank in an enclosed area or near open flames or sparks.

Warranty Information

Stihl 45 Hedge Trimmer is covered by a limited warranty for residential use. Proof of purchase is required. Warranty covers defects in materials and workmanship under normal use. It does not cover damage from misuse, neglect, improper maintenance, or use of non-genuine Stihl parts. For warranty service, contact an authorized Stihl servicing dealer. For more information, visit www.stihl.com or contact customer service.

Troubleshooting

Service: For repairs beyond basic maintenance, take the unit to an authorized Stihl dealer.

Support: www.stihl.com | Contact your local authorized Stihl dealer.