CHAINSAW NOT CUTTING PROPERLY

it could be the bar is worn down and the chain is riding on the wrong area

The chain only comes off the bar if, the chain has become lose and de railed, or if the timber you are cutting is very springy and you are trapping it in the cut, our twisting it in the cut, if the saw is not oiling the chain correctly it will stretch and if not addressed will come off, once it has come off the drive links are usually damaged, you should realy start again with a new chain, when running close to a clean peice of wood you should a steady stream of chain oil coming from the end of the guide bar.

Bar oil is an oil with with a fling addative added, most cutting is done with the ubnder side of the bar, if there was no sticky addative the oil would just spray off the end of the bar, and not lubricate the under side where you are cutting.
Hope this aswers your question.

The manual should give the proper sharpening angle--the main thing is to make sure that all teeth are sharpened to the same angle. If you remove the bar and chain, look at the outer edges of the chain groove around the whole bar--you may find that the bar metal has worn is such a way that the outer edges are flared out beyond the surface of the bar. This flare tends to grip the cut and cause it veer off to one side. The cure is to file down this flare at about 45 degrees so that nothing projects. Hope this helps!

Remove the bar from saw and make sure it is clean and free of debris where the bar attaches to the saw. Inspect the bar groove where the chain fits in and make sure the groove is straight and smooth and properly aligned. Re-attach the bar and make sure the chain is set at the recommended tension.

Usually, angled cutting is caused by heavy wear of the chain groove on the bar as well as the outer edges of the top and bottom of the bar which flare out when worn (file the extra metal off @ about 45 degrees). With all-new components, chain tooth shape may be incorrect (usually caused by faulty filing technique) due to a manufacturing defect. Make sure the chain is properly tensioned--it should be tight to the bar, but able to be turned by hand. Hope this helps!

Use a file around the perimeter of the bar at about a 45° angle, both sides. Remove just enough metal to see where the file has been. I think you have a wire edge that is causing the bar to cut at an angle. Be careful it is sharp. If that is not it post back below. Good Luck. HTH
Lou

too much oil in the fuel, or set screws are not mixing air fuel properly. have the set screws looked at, and listen for a bearing to be gone, there are two un related issues here.

When My Pioneer did that a close inspection found a wire edge on the top rear and bottom front rails of the bar. A flat file used at 45° to the rail removed it. The bar once again cuts true. The only other likely possibility is the chain is sharpened at different angles. HTH
Lou

The chain is not sharpened evenly. One side is cutting faster than the other. Also check to be sure that the bar itself is not worn excessively on one side. The cheapest way to test this is to change the chain.

Dan