Stihl HT-KM Instruction Manual - Page 18

246BA025 KN 246BA026 KN English Checking Chain Tension Chain Lubricant Filling Chain Oil Tank N Shut off the engine. N Wear work gloves to protect your hands. N The chain must fit snugly against the underside of the bar and it must still be possible to pull the chain along the bar by hand. N If necessary, re-tension the chain. A new chain has to be re-tensioned more often than one that has been in use for some time. N Check chain tension frequently - see chapter on "Operating Instructions". For automatic and reliable lubrication of the chain and guide bar - use only an environmentally compatible quality chain and bar lubricant. Rapidly biodegradable STIHL BioPlus is recommended. NOTICE Biological chain oil must be resistant to aging (e.g. STIHL BioPlus), since it will otherwise quickly turn to resin. This results in hard deposits that are difficult to remove, especially in the area of the chain drive and chain. It may even cause the oil pump to seize. The service life of the chain and guide bar depends on the quality of the lubricant. It is therefore essential to use only a specially formulated chain lubricant. WARNING Do not use waste oil. Renewed contact with waste oil can cause skin cancer. Moreover, waste oil is environmentally harmful. NOTICE Waste oil does not have the necessary lubricating properties and is unsuitable for chain lubrication. NOTICE A full chain oil tank is sufficient for only half a tankful of fuel. Check the oil level regularly during cutting work. Never allow the oil tank to run dry. Preparations N Thoroughly clean the tank cap and the area around it to ensure that no dirt falls into the tank. N Position the machine so that the tank cap faces up. 16 HT-KM