Do It Yourself: Common Chain Saw Repairs

Some common do it yourself chain saw repairs, such as cleaning air filter, sharpening chain, changing fuel filter, greasing tip of bar, and reasons to replace bar.

Clean Air Filter

Unscrew filter from saw. If it is a nylon filter, rinse and soak in hot soapy water. Rinse well and dry thoroughly. Other non-nylon filters can be blown out with an air compressor. This should be done after each use for optimum upkeep.

Sharpen Chain

The easiest way to learn to sharpen a chain yourself is by purchasing a file guide. First make sure to buy the file in the same size as your chain requires. The guide sets right on top of the chains tooth, and does not allow you to file too deep. Angles are also indicated on the file guide. Filing the chain at the correct angle and depth is extremely important, because if you file at the wrong angle or depth, the chain will be either too aggressive or not aggressive enough. Also, purchase a raker guide. This will allow you to file the rakers to the correct depth for the tooth. If filed too far, it can cause grabbing and kickback, while not enough will cause the chain to seem dull.

Change Fuel Filter

Remove fuel cap and empty tank if so desired. It is much easier to do on an emptied tank. With a small wire hook, fish fuel line out of the tank. The filter is at the end of the fuel line. Pull old filter off while securing fuel line in hand. This last step is very important, because if you let the fuel line fall back into the tank without the fuel filter on, it is extremely hard to retrieve it. Slide new fuel filter into place, and put back into tank. Refill with fuel and replace cap.

Blow Out Saw

While a saws main purpose is cutting wood, the creation of sawdust can be the biggest detriment to it. Sawdust can collect in every conceivable nook and cranny. After every use, blow out the saw with an air compressor.

Grease Tip of Bar

Purchase a pre-filled grease gun manufactured specifically for the tips of chainsaw bars. Oftentimes, when purchasing a new saw, one will be included. Place tip of grease gun in hole at tip of bar, and give a few pumps. When grease comes out the end of bar, enough has been used.

Replace Tip of Bars

Some bars are manufactured with replaceable tips. That way, when a tip blows, you can replace just the tip, not the whole bar. This is economical, especially if you go through quite a few. Take bar off saw, with a hammer and punch, pound out the rivet that holds the tip in place. When rivet is removed, pull old tip straight off. Before placing new tip on, make sure and clean out end of bar from accumulated junk. A small screwdriver or wire brush can be used for this step. Place new tip on, put new rivet that came with new tip on. Place bar with new tip and rivet on a hard object, (a vise can be used for this step) take a hammer and peen over end of rivet. If after placing new tip on, you realize that the bar is worn in a fashion that it is smaller, or narrower, than the new tip, carefully grind the new tip to match.

Reasons for Replacing a Bar

1. You have used a bar with a non-replaceable tip and the tip has blown.

2. Groove that the chain runs in wears out, causing sloppiness of the chain when saw is being operated.

3. Bar has developed chips causing chain to jump off.

© High Speed Ventures 2011