Alpina Chainsaw Manual

The Alpina Chainsaw is a professional-grade power tool designed for cutting wood, featuring a high-performance engine, automatic chain oiling, safety chain brake, anti-vibration system, and ergonomic handles. Below are key sections for safety, features, assembly, operation, maintenance, and troubleshooting.

Features at a Glance

Key components: High-torque engine, Guide bar, Saw chain, Chain brake, Chain tensioner, Oil tank, Throttle trigger, Safety lock, Front and rear handles.

Feature	Description
Engine	2-stroke gasoline engine with high power-to-weight ratio
Guide Bar	Professional-grade bar for precise cutting
Chain Brake	Automatic inertia-activated safety brake
Anti-Vibration System	Reduces operator fatigue during extended use
Automatic Oiling	Continuous lubrication of chain and bar
Safety Lock	Prevents accidental throttle activation
Ergonomic Handles	Rubber-coated for secure grip and comfort
Chain Tensioner	Tool-free adjustment for proper chain tension
Spark Arrestor	Prevents emission of burning particles
Decompression Valve	Easier starting by reducing cylinder pressure

Safety Instructions

Read all instructions before operation. Always wear protective equipment.

1. Personal Protective Equipment: Wear safety glasses, hearing protection, gloves, steel-toe boots, and chainsaw chaps.
2. Work Area Safety: Clear area of obstacles; ensure secure footing; keep bystanders at safe distance.
3. Chain Safety: Always engage chain brake when not cutting; ensure proper chain tension.
4. Fuel Safety: Refuel in well-ventilated area with engine off and cool; use proper fuel/oil mix.

WARNING! Never operate chainsaw with one hand. Kickback can cause serious injury. Always maintain firm grip with both hands.

Assembly & Preparation

Unpack and inspect all components. Assemble following steps.

1. Attach Guide Bar: Place bar on mounting studs; align chain groove with drive sprocket.
2. Install Chain: Fit chain over bar with cutting teeth facing forward; engage drive links.
3. Adjust Chain Tension: Use tensioning screw to achieve proper tension (chain should snap back when pulled).
4. Fill Oil Tank: Use recommended bar and chain oil; check for leaks.
5. Fuel Mix: Prepare 50:1 gasoline to 2-stroke oil mixture; fill fuel tank.

CAUTION! Ensure all fasteners are tight. Test chain brake function before first use.

Specifications

• Engine Displacement: 45cc 2-stroke
• Power Output: 2.5 kW (3.4 HP)
• Guide Bar Length: 16 inches (40 cm)
• Chain Pitch: 3/8 inch
• Chain Gauge: 0.050 inch
• Fuel Capacity: 0.5 liters
• Oil Capacity: 0.25 liters
• Weight (without fuel): 4.8 kg
• Sound Power Level: 110 dB(A)
• Vibration Level: 4.5 m/s²

Controls and Functions

Main controls located on handle assembly.

Right Handle: Throttle trigger, Safety lock (must be pressed to activate throttle), Chain brake lever (forward to engage, pull back to disengage).

Left Handle: Front hand guard (activates chain brake if kicked back), Choke lever, Decompression valve button.

Body: Fuel tank cap, Oil tank cap, Chain tensioner screw, Spark plug cover, Air filter cover, Starter grip.

Operation Indicators: Check oil level window; fuel level indicator.

Starting & Operation

Starting procedure for cold and warm engine.

1. Pre-Start Check: Ensure chain brake engaged; chain clear of obstructions; proper fuel/oil mix.
2. Cold Start: Set choke to full; press decompression valve; pull starter cord 3-5 times until engine fires; set choke to half; pull until starts; run at idle 30 seconds.
3. Warm Start: Choke off; pull starter cord 1-3 times.
4. Cutting Technique: Use full throttle when cutting; let chain do the work; avoid pushing or forcing.
5. Kickback Prevention: Keep nose of bar away from objects; cut with lower part of bar; maintain secure grip.

Tip: Always disengage chain brake before cutting. Allow engine to warm up before full throttle operation.

Maintenance & Cleaning

Regular maintenance ensures optimal performance and longevity.

1. Daily: Clean air filter; check chain tension; inspect chain sharpness; clean cooling fins.
2. Weekly: Clean spark arrestor; check spark plug gap (0.5mm); clean fuel filter.
3. Monthly: Clean carburetor; check all bolts and fasteners; inspect anti-vibration elements.
4. Seasonal: Replace fuel filter; clean fuel tank; replace spark plug; grease bearing points.

WARNING! Always disconnect spark plug wire before performing maintenance. Allow engine to cool completely.

Chain Sharpening

Sharp chain improves cutting efficiency and safety.

1. Secure Chainsaw: Use vise to hold bar securely.
2. File Size: Use correct round file diameter (typically 4.0mm or 4.8mm).
3. Filing Angle: Maintain 30° angle; follow existing angle on cutters.
4. Filing Technique: Push file forward with light pressure; rotate file slightly; equal strokes per cutter.
5. Depth Gauges: Use depth gauge tool to maintain proper height (0.025" below cutter).
6. Check Symmetry: Ensure all cutters same length; chain cuts straight.

CAUTION! Wear gloves when handling chain. Replace chain when cutters are worn beyond repair.

Storage Guidelines

Proper storage prevents damage and starting issues.

1. Short-term (under 30 days): Drain fuel tank; run engine until fuel system empty; clean exterior; store in dry place.
2. Long-term (over 30 days): Drain all fuel; remove spark plug; add teaspoon of oil to cylinder; pull starter slowly to distribute; reinstall spark plug; clean thoroughly; store in protective case.
3. Chain Storage: Remove chain; clean in solvent; dry completely; coat with oil; store in sealed container.

Tip: Store chainsaw out of reach of children. Keep away from heat sources and moisture.

Warranty Information

Alpina Chainsaw comes with 2-year limited warranty covering defects in materials and workmanship. Warranty does not cover normal wear, misuse, improper maintenance, or use of non-genuine parts. For warranty service, contact authorized Alpina dealer with proof of purchase. For support, visit www.alpinapowertools.com or contact 1-800-555-ALPINA.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	No spark/flooded/old fuel	Check spark plug; use fresh fuel mix; adjust choke; clean carburetor.
Engine starts then dies	Fuel filter clogged	Replace fuel filter; clean fuel tank; check fuel lines.
Chain doesn't turn	Chain brake engaged	Disengage chain brake; check clutch assembly.
Chain throws oil	Overfilled oil tank	Drain excess oil; check oil pump adjustment.
Excessive vibration	Loose components	Tighten all bolts; check anti-vibration mounts; balance chain.
Chain dulls quickly	Cutting dirty wood	Avoid cutting into ground; sharpen properly; check depth gauges.
Poor cutting performance	Dull chain/improper tension	Sharpen chain; adjust tension; check bar groove.

Service: For professional service, contact authorized Alpina service center. Do not attempt major repairs unless qualified.

Support: 1-800-555-ALPINA; www.alpinapowertools.com