Keeping your Stihl 021 model chain saw running smoothly is only possible with the appropriate tools and substances. Without the right sort of oil and a correctly operating lubrication system, the guide pub on an 021 model chain saws quickly suffers harm from friction and overheating. It’s possible for you to use automotive petroleum to soften your guide pub in a pinch, but long-term use will quickly degrade bars and chains.
Guide Bar Oil
Guide pub oil is a distinctive formulation of oil oil which includes additives designed for the operating conditions affecting guide bars. Proprietary blends of pub oil are designed to adhere to the bar and chain while staying viscous at low temperatures. Motor oil and other possible substitutes lack these additives or provide the same level of lubrication that pub oil does.
Cleaning the Guide Bar
Consistently cleaning and removing the guide bar is essential for maintaining your chain lubricated. Over the years, the channels which the chain fits to eventually become clogged with sawdust, dirt and burrs that inhibit the flow of oil through the oilway. The two nuts on the right side of the Stihl 021 secure the guide bar and a plastic cover. With the cover removed, you may use the tensioning screw on the front of the chain saw next to the pub to release the pressure on the chain. Turing the chain tensioner counterclockwise slackens the chain. When the chain is fully slack, then you can remove the bar and chain for cleaning. Blasting the oilway with compressed air or scrape out debris using a toothpick both remove dirt and grime.
Cleaning the Oiler
Oil enters the station on the exterior the pub through the oil inlet. The petroleum inlet is a small hole near the base of the guide bar beside the decrease bolt which secures the guide bar. Scrape out any debris using a toothpick or blast the oil inlet hole using compressed air to ensure oil may get to the chain. The oiler that produces oil to the oil inlet hole additionally becomes clogged with usage. Once the guide bar is removed, it is possible to blast it using compressed air to remove any dirt obstructing the petroleum inlet.
Refilling the Tank
The Stihl 021 holds 0.4 pints of guide bar petroleum. The cap for the guide bar cylinder is marked using a link of chain and an oil droplet. The cap is on the left side of the saw, in front of the handle. The very best time to refill the guide bar tank is if you refill the gas cylinder. Check the region around the oil cap and the cap itself for soil and wash them as necessary to prevent clogs in your oil.