Over time, sawdust and other debris will clog the system which lubricates your Stihl MS290 chain’s guide bar and chain saw. Even a up oil delivery hose or A oil inlet hole can cause chain and the guide bar to overheat, resulting in serious damage to the guide bar. Cleaning the petroleum delivery system and adjusting its output is going to keep the chain saw running.
The strain on the chain of your Stihl MS290 series saw by correcting the chain tensioner. Remove the nuts securing the drive sprocket cover, and remove the cover. Lift the chain off the sprocket, and pull on the chain and guide bar off the saw.
Remove from the guide bar, and inspect the groove in which the chain rests. using toothpicks, scrape out all sawdust and other debris. Check for dirt in the holes above the slot at the base of the guide bar. Blast these holes removing all dirt.
Locate both bolts that hold the guide bar set up and which are on the chain saw’s side. Look carefully at the slot that is above those 2 bolts. This slot — known as the oilway — provides guide bar oil to the guide bar. Scrape from the oilway all big pieces of debris. The oilway with compressed air, making sure that oil may flow to your MS290’s guide bar.
Reassemble chain and the guide bar on the chain saw. Begin the engine of the saw. Position the tip of the guide bar above a surface that is clean you rev the engine for five seconds, and don’t mind getting dirty. The saw releases a fine mist of oil that you will see on the surface that is blank when the guide bar and chain are lubricated.
Switch off the chain saw engine. Flip the saw so you may access its underside if you want to adjust the oil flow. Find the E-matic oil adjustment screw on the saw underside, and turn it clockwise to increase the flow of oil. The E placing in the middle of the gauge beside the screw is the speed of flow. A chain link having an oil droplet above its image is the greatest setting.
