McCulloch Power Mac 310 Chainsaws (5 Expert Tips For Woodcutters)

Let’s talk about the McCulloch Power Mac 310 chainsaw. It’s a model I’ve spent a lot of time with, and while it might not be the newest or flashiest on the market, it’s a solid workhorse that, with the right care and understanding, can serve you well for years. I want to share my top expert tips for getting the most out of this reliable machine.

McCulloch Power Mac 310 Chainsaws: 5 Expert Tips for Woodcutters

The McCulloch Power Mac 310 is a classic, and like any tool, it has its quirks and strengths. These tips come from my own experiences and observations in the field, dealing with everything from felling small trees to bucking firewood.

1. Mastering the Art of Starting Your Power Mac 310

Starting a chainsaw can be frustrating, especially when it’s cold or hasn’t been used in a while. The Power Mac 310, in particular, can be a bit temperamental if you don’t follow the correct procedure. Over the years, I’ve developed a foolproof method that rarely fails.

Priming is Key

The first thing I always do is prime the carburetor. Most Power Mac 310s have a small, clear bulb you can press. I usually give it 6-8 presses until I see fuel flowing through the line. This ensures that the carburetor has enough fuel to start.

Choke Engagement

Next, engage the choke. This restricts airflow to the engine, creating a richer fuel mixture that’s easier to ignite when cold. On the Power Mac 310, the choke lever is usually located near the carburetor.

The Starting Pull

Place the chainsaw on a firm, level surface. I like to put my right foot through the rear handle to hold it steady. Now, pull the starter cord firmly but smoothly. Don’t yank it! A smooth, controlled pull is more effective and less likely to damage the cord or mechanism. I usually pull until I hear the engine sputter or try to start.

Disengaging the Choke

Once the engine sputters, immediately disengage the choke. If you leave the choke on for too long, you’ll flood the engine.

The Final Pull

Now, pull the starter cord again. The engine should start within a few pulls. If it doesn’t, repeat the process from step one, but this time, try giving it a little throttle while pulling. Be careful not to over-throttle, as this can also flood the engine.

Warm-Up

Once the engine starts, let it idle for a few minutes to warm up. This allows the engine oil to circulate and lubricate all the moving parts. A warm engine is a happy engine.

Troubleshooting Starting Problems

If you’re still having trouble starting your Power Mac 310, here are a few things to check:

Spark Plug: Make sure the spark plug is clean and properly gapped. A dirty or fouled spark plug can prevent the engine from starting. The correct gap for most small chainsaw engines is around 0.025 inches.
Fuel: Make sure you’re using fresh, high-quality fuel. Old or stale fuel can cause starting problems. I recommend using fuel that’s less than 30 days old.
Air Filter: A dirty air filter can restrict airflow to the engine, making it difficult to start. Clean or replace the air filter regularly.
Carburetor: If you suspect the carburetor is clogged or dirty, you may need to clean or rebuild it. This is a more advanced repair that may require the help of a qualified technician.

Takeaway: Starting your Power Mac 310 correctly is crucial for its longevity. Prime, choke, pull smoothly, and warm up. Regularly check the spark plug, fuel, and air filter to prevent starting problems.

2. Chain Sharpening and Maintenance: Keeping Your Cut Clean

A dull chain is not only inefficient, it’s also dangerous. It forces you to apply more pressure, which can lead to kickback and other accidents. Keeping your chain sharp is essential for safe and efficient cutting. I’ve seen firsthand how a well-maintained chain can transform a struggling cut into a smooth, effortless slice.

Frequency of Sharpening

How often should you sharpen your chain? That depends on the type of wood you’re cutting and how often you use the chainsaw. As a general rule, I sharpen my chain after every tank of fuel, or whenever I notice it’s not cutting as well as it should. Signs of a dull chain include:

The chain produces sawdust instead of chips.
You have to apply a lot of pressure to make the chain cut.
The chain pulls to one side.
The engine bogs down when cutting.

Tools for Sharpening

There are several ways to sharpen a chainsaw chain. The most common methods are:

Hand Filing: This involves using a round file and a file guide to sharpen each tooth individually. It’s the most affordable method and allows you to sharpen the chain while it’s still on the saw.
Electric Chain Sharpener: This is a power tool that uses a grinding wheel to sharpen the chain. It’s faster and more precise than hand filing, but it requires more setup and can be more expensive.
Professional Sharpening: You can also take your chain to a professional sharpening service. This is the most convenient option, but it can also be the most expensive.

For the Power Mac 310, I usually recommend hand filing. It’s easy to learn, relatively inexpensive, and allows you to maintain the chain’s cutting edge in the field.

The Hand Filing Process

Here’s how to sharpen your chainsaw chain using a hand file:

Secure the Chainsaw: Place the chainsaw in a vise or on a stump to hold it securely.
Identify the Correct File Size: Use a round file that’s the correct size for your chain. The file size is usually stamped on the chain. For most Power Mac 310 chains, a 5/32-inch file is appropriate.
Use a File Guide: A file guide helps you maintain the correct angle and depth while sharpening. Place the file guide on the chain, aligning the arrows with the direction of chain rotation.
File Each Tooth: File each tooth using smooth, even strokes. Maintain the correct angle and depth. I usually make 3-5 strokes per tooth.
Check the Depth Gauges: After sharpening, check the depth gauges (also known as rakers). These are the small, flat pieces of metal in front of each cutting tooth. If the depth gauges are too high, they will prevent the chain from cutting effectively. Use a flat file to lower the depth gauges to the correct height. The correct height is usually stamped on the depth gauge.
Repeat for All Teeth: Repeat the process for all the teeth on the chain.

Chain Tension

Proper chain tension is crucial for safe and efficient cutting. A chain that’s too loose can derail, while a chain that’s too tight can overheat and break.

To check the chain tension, lift the chain in the middle of the bar. The chain should lift about 1/8 inch. If it lifts more than that, the chain is too loose. If it doesn’t lift at all, the chain is too tight.

To adjust the chain tension, loosen the bar nuts and turn the tensioning screw until the chain is properly tensioned. Then, tighten the bar nuts.

Chain Lubrication

Proper chain lubrication is essential for preventing wear and tear on the chain and bar. The Power Mac 310 has an automatic chain oiler that lubricates the chain while it’s running.

Make sure the chain oil reservoir is always full. I recommend using a high-quality bar and chain oil. Avoid using motor oil, as it’s not designed for chainsaw chains and can damage the chain and bar.

Check the oiler regularly to make sure it’s working properly. If the chain is not being lubricated, the bar will become hot and the chain will wear out quickly.

Takeaway: A sharp, well-maintained chain is essential for safe and efficient cutting. Sharpen your chain regularly, maintain proper chain tension, and keep the chain well-lubricated.

3. Fuel and Oil: The Lifeblood of Your Power Mac 310

The Power Mac 310, like most two-stroke engines, relies on a precise mixture of fuel and oil for lubrication and combustion. Getting this right is fundamental to the saw’s performance and longevity. I’ve seen firsthand the damage that can be caused by using the wrong fuel mixture.

Fuel Mixture Ratio

The Power Mac 310 typically requires a fuel-to-oil mixture ratio of 40:1. This means that for every 40 parts of fuel, you need 1 part of oil. Using the wrong mixture ratio can lead to serious engine damage. Too little oil can cause the engine to seize, while too much oil can foul the spark plug and cause the engine to run poorly.

Mixing Fuel and Oil

To mix fuel and oil, use a clean fuel can. Add the correct amount of two-stroke oil to the fuel can, then add the fuel. Shake the can vigorously to mix the fuel and oil thoroughly.

I recommend using a fuel stabilizer, especially if you’re not going to use the fuel immediately. Fuel stabilizer helps prevent the fuel from breaking down and forming gum and varnish, which can clog the carburetor.

Type of Fuel

Use high-quality gasoline with an octane rating of 87 or higher. Avoid using fuel that contains ethanol, as ethanol can damage the engine. If you must use fuel that contains ethanol, use a fuel stabilizer that’s specifically designed to protect against ethanol damage.

Type of Oil

Use a high-quality two-stroke oil that’s specifically designed for air-cooled engines. Avoid using automotive oil, as it’s not designed for the high temperatures and stresses of a two-stroke engine.

I recommend using a synthetic two-stroke oil, as it provides better lubrication and protection than conventional oil.

Storing Fuel

Store fuel in a cool, dry place. Avoid storing fuel in direct sunlight or near heat sources. Fuel can degrade over time, so it’s best to use it within 30 days. If you’re not going to use the fuel within 30 days, add a fuel stabilizer.

Bar and Chain Oil

In addition to the fuel mixture, the Power Mac 310 also requires bar and chain oil to lubricate the chain and bar. Use a high-quality bar and chain oil that’s specifically designed for chainsaw chains. Avoid using motor oil, as it’s not designed for chainsaw chains and can damage the chain and bar.

Check the oil level regularly and refill as needed. A dry chain will wear out quickly and can damage the bar.

Takeaway: Use the correct fuel mixture ratio (40:1), high-quality gasoline, and two-stroke oil. Store fuel properly and use a fuel stabilizer to prevent fuel degradation. Keep the bar and chain oil reservoir full to ensure proper chain lubrication.

4. Basic Maintenance and Troubleshooting: Keeping Your Saw in Top Shape

Regular maintenance is essential for keeping your Power Mac 310 running smoothly and preventing costly repairs. I’ve learned that a little preventative maintenance can save you a lot of time and money in the long run.

Air Filter Cleaning

A dirty air filter can restrict airflow to the engine, causing it to run poorly. Clean the air filter regularly, especially if you’re cutting in dusty conditions.

To clean the air filter, remove it from the chainsaw and wash it with warm, soapy water. Rinse the filter thoroughly and allow it to dry completely before reinstalling it.

If the air filter is damaged or excessively dirty, replace it with a new one.

Spark Plug Maintenance

The spark plug ignites the fuel-air mixture in the engine. A dirty or fouled spark plug can prevent the engine from starting or cause it to run poorly.

Check the spark plug regularly and clean it with a wire brush if necessary. The correct gap for most small chainsaw engines is around 0.025 inches.

If the spark plug is damaged or worn, replace it with a new one.

Carburetor Adjustment

The carburetor regulates the flow of fuel and air to the engine. If the carburetor is not properly adjusted, the engine may run poorly or not start at all.

The Power Mac 310 carburetor typically has two adjustment screws: one for idle speed and one for high speed. Adjusting the carburetor can be tricky, so it’s best to consult the owner’s manual or a qualified technician.

Cleaning the Chainsaw

Keep the chainsaw clean by wiping it down after each use. Remove any sawdust or debris that may have accumulated on the engine, bar, or chain.

Store the chainsaw in a dry place to prevent rust and corrosion.

Troubleshooting Common Problems

Here are some common problems that can occur with the Power Mac 310 and how to troubleshoot them:

Engine Won’t Start: Check the fuel level, spark plug, air filter, and carburetor. Make sure the choke is engaged and the engine is properly primed.
Engine Runs Poorly: Check the fuel mixture, spark plug, air filter, and carburetor. Make sure the chain is sharp and properly tensioned.
Chain Won’t Cut: Make sure the chain is sharp and properly tensioned. Check the depth gauges.
Chain Oiler Not Working: Check the oil level and make sure the oiler is not clogged.

Takeaway: Regular maintenance, including air filter cleaning, spark plug maintenance, and carburetor adjustment, is essential for keeping your Power Mac 310 running smoothly. Troubleshoot common problems by checking the fuel, spark plug, air filter, carburetor, chain, and chain oiler.

5. Safety First: Protecting Yourself While Working with Your Chainsaw

Chainsaws are powerful tools that can be dangerous if not used properly. Safety should always be your top priority when operating a chainsaw. I’ve seen too many accidents that could have been prevented with proper safety precautions.

Personal Protective Equipment (PPE)

Always wear appropriate personal protective equipment (PPE) when operating a chainsaw. This includes:

Safety Glasses or Face Shield: Protect your eyes from flying debris.
Hearing Protection: Chainsaws are loud and can damage your hearing over time.
Gloves: Protect your hands from cuts and abrasions.
Chainsaw Chaps or Pants: Protect your legs from cuts.
Steel-Toed Boots: Protect your feet from falling objects and cuts.
Helmet: Protect your head from falling objects.

Safe Operating Practices

Follow these safe operating practices when using a chainsaw:

Read the Owner’s Manual: Familiarize yourself with the chainsaw’s operating instructions and safety precautions.
Inspect the Chainsaw: Before each use, inspect the chainsaw for any damage or loose parts.
Clear the Work Area: Remove any obstacles from the work area, such as branches, rocks, and debris.
Maintain a Safe Distance: Keep a safe distance from other people and objects while operating the chainsaw.
Use a Proper Grip: Hold the chainsaw firmly with both hands, using a proper grip.
Avoid Cutting Overhead: Avoid cutting overhead, as this can be dangerous.
Be Aware of Kickback: Kickback is a sudden, violent reaction that can occur when the chain comes into contact with a solid object. Be aware of the risk of kickback and take steps to prevent it.
Never Cut Above Shoulder Height: Maintaining control becomes extremely difficult, increasing the risk of accidents.
Shut Off the Chainsaw: Shut off the chainsaw when you’re not using it.
Carry the Chainsaw Safely: Carry the chainsaw with the chain brake engaged and the bar pointing away from you.
Don’t Operate When Fatigued: Fatigue impairs judgement and coordination, making accidents more likely.
Don’t Wear Loose Clothing: Loose clothing can get caught in the chainsaw.

Understanding Kickback

Kickback is one of the most common causes of chainsaw injuries. It occurs when the upper tip of the chainsaw bar comes into contact with a solid object, causing the chainsaw to suddenly and violently kick back towards the operator.

To prevent kickback, avoid cutting with the upper tip of the bar. Use a low-kickback chain and bar. Maintain a firm grip on the chainsaw. Be aware of your surroundings and avoid cutting near solid objects.

First Aid

In case of an accident, it’s important to have a first-aid kit on hand and know how to use it. Seek medical attention immediately for any serious injuries.

Takeaway: Safety should always be your top priority when operating a chainsaw. Wear appropriate PPE, follow safe operating practices, and be aware of the risk of kickback. Have a first-aid kit on hand in case of an accident.

By following these expert tips, you can get the most out of your McCulloch Power Mac 310 chainsaw and enjoy years of reliable service. Remember to always prioritize safety and perform regular maintenance to keep your saw in top shape. Happy cutting!