1. Introduction
This manual provides essential instructions for the safe and efficient operation, maintenance, and troubleshooting of your Alpina A305 Chainsaw. Please read this manual thoroughly before operating the chainsaw to ensure your safety and to achieve optimal performance from the tool. Keep this manual in a safe place for future reference.
2. Safety Information
Operating a chainsaw can be dangerous if proper safety precautions are not followed. Always prioritize safety to prevent serious injury or death.
- Read the Manual: Understand all instructions and warnings before use.
- Personal Protective Equipment (PPE): Always wear appropriate PPE, including a safety helmet, eye protection, hearing protection, heavy-duty gloves, safety trousers (cut-resistant), and safety boots.
- Work Area: Ensure the work area is clear of bystanders, children, and pets. Maintain a safe distance from other people and objects.
- Firm Grip: Always hold the chainsaw firmly with both hands, with thumbs and fingers encircling the handles.
- Kickback: Be aware of kickback, which can occur when the moving chain at the tip of the guide bar contacts an object, or when the wood closes in and pinches the saw chain in the cut. Avoid cutting with the tip of the guide bar.
- Fuel Handling: Handle fuel with extreme care. It is highly flammable. Mix and refuel outdoors, away from ignition sources.
- Maintenance: Regularly inspect and maintain the chainsaw as described in this manual. A dull or improperly tensioned chain can increase the risk of kickback and injury.
- Weather Conditions: Do not operate the chainsaw in adverse weather conditions such as heavy rain, strong winds, or icy conditions.
3. Product Overview
The Alpina A305 is a compact and lightweight chainsaw designed for hobby work and light tree maintenance. It features a 25 ccm engine and a 25 cm (10-inch) guide bar.
Figure 1: Front-side view of the Alpina A305 Chainsaw, highlighting its compact design and yellow casing. The chain and guide bar are visible, along with the front handle and chain brake.
Figure 2: Side view of the Alpina A305 Chainsaw, showing the full length of the Oregon Double Guard 91 guide bar and chain. The rear handle and engine housing are also visible.
Figure 3: Top-down view of the Alpina A305 Chainsaw, illustrating the top handle, starter cord area, and fuel/oil caps. The chain brake lever is also prominent.
4. Setup
4.1 Unpacking and Inspection
Carefully remove the chainsaw and all accessories from the packaging. Inspect for any damage that may have occurred during shipping. If any damage is found, do not operate the chainsaw and contact your dealer.
4.2 Bar and Chain Installation
Refer to the detailed diagrams in your printed manual for specific steps. Generally, this involves:
- Remove the chain brake cover.
- Place the guide bar onto the studs.
- Carefully fit the saw chain around the sprocket and into the guide bar groove. Ensure the cutting edges of the chain are facing the correct direction.
- Replace the chain brake cover and hand-tighten the nuts.
- Adjust chain tension (see Section 6.1).
4.3 Fuel and Chain Oil
This chainsaw uses a two-stroke engine that requires a mixture of unleaded gasoline and two-stroke engine oil. Always use a high-quality two-stroke oil specifically designed for air-cooled engines. The recommended mixing ratio is typically 50:1 (2% oil), but always refer to the specific instructions on your two-stroke oil container.
- Fuel Tank: Fill with the correct fuel mixture.
- Chain Oil Tank: Fill with high-quality chain lubricant oil. Never use waste oil or motor oil.
Warning: Always mix fuel in a well-ventilated area, away from sparks or open flames. Do not smoke while handling fuel.
5. Operating Instructions
5.1 Pre-Operation Checks
- Check fuel and chain oil levels.
- Verify chain tension and sharpness.
- Ensure all nuts and bolts are tight.
- Test the chain brake for proper function.
- Inspect the air filter for cleanliness.
5.2 Starting the Engine (Cold Start)
- Place the chainsaw on a firm, flat surface.
- Engage the chain brake.
- Set the choke lever to the 'FULL CHOKE' position.
- Press the primer bulb several times until fuel is visible.
- Pull the starter cord firmly and steadily until the engine fires (usually a few pulls).
- Once the engine fires, move the choke lever to the 'HALF CHOKE' or 'RUN' position (depending on model).
- Pull the starter cord again until the engine starts and runs.
- Allow the engine to warm up for a few moments, then disengage the chain brake.
5.3 Operating the Chainsaw
- Maintain a balanced stance with feet apart.
- Always hold the chainsaw with both hands.
- Plan your cut before starting.
- Do not overreach or cut above shoulder height.
- Be aware of falling branches and rolling logs.
5.4 Stopping the Engine
Release the throttle trigger and allow the engine to idle. Move the ignition switch to the 'STOP' position.
6. Maintenance
Regular maintenance is crucial for the safe and efficient operation and longevity of your chainsaw.
6.1 Daily Checks
- Chain Tension: Check chain tension before each use. The chain should be snug against the guide bar but still able to be pulled around by hand.
- Chain Sharpness: A sharp chain cuts efficiently and reduces the risk of kickback. Sharpen or replace dull chains.
- Chain Lubrication: Ensure the chain oiler is functioning correctly and lubricating the chain.
6.2 Regular Maintenance
- Air Filter: Clean the air filter regularly, especially in dusty conditions. A clogged filter reduces engine performance.
- Spark Plug: Inspect the spark plug for wear and proper gap. Replace if necessary.
- Guide Bar: Clean the guide bar groove and oil holes. Flip the guide bar periodically to ensure even wear.
- Cooling Fins: Keep the engine's cooling fins clean to prevent overheating.
7. Troubleshooting
This section addresses common issues you might encounter with your Alpina A305 Chainsaw.
| Problem | Possible Cause | Solution |
|---|---|---|
| Engine won't start | No fuel, incorrect choke setting, fouled spark plug, clogged fuel filter | Check fuel level, adjust choke, clean/replace spark plug, clean/replace fuel filter |
| Chainsaw loses power | Clogged air filter, dull chain, incorrect fuel mixture | Clean air filter, sharpen chain, ensure correct fuel mix |
| Chain not moving | Chain brake engaged, incorrect chain tension, damaged clutch | Disengage chain brake, adjust chain tension, consult service center for clutch issues |
| Excessive vibration | Loose components, damaged chain/bar, engine imbalance | Check all fasteners, inspect chain/bar for damage, consult service center for engine issues |
If you are unable to resolve an issue using this guide, please contact a qualified service technician.
8. Specifications
| Feature | Specification |
|---|---|
| Model | A305 |
| Manufacturer | Alpina |
| Power | 0.9 kW |
| Engine Displacement | 25 ccm |
| Guide Bar Length | 25 cm (10 inches) |
| Weight | 3.1 kg |
| Item Model Number | 202510020/ALP |
| Power Source Type | Blandning (Fuel Mixture) |
9. Warranty and Support
9.1 Warranty Information
The Alpina A305 Chainsaw comes with a warranty period of 2 years for private use and 1 year for professional use. This warranty covers manufacturing defects under normal use conditions. Please retain your proof of purchase for warranty claims.
9.2 Customer Support
For technical assistance, spare parts, or warranty service, please contact your authorized Alpina dealer or visit the official Alpina website for support contact information.
