Stihl MSE 140 C-BQ Product Instruction Manual - Page 29
Checking Chain Tension, Chain Lubricant
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English / USA Checking Chain Tension Chain Lubricant 1 : Disconnect plug from power supply to avoid risk of accidental switch-on. : Wear work gloves to protect your hands. : Disengage the chain brake: Pull the hand guard (1) against the front handle and hold it there - the chain brake and coasting brake are disengaged in this position. 100BA015 KN Chain must fit snugly against the underside of the bar and t must still be possible to pull the chain along the bar by hand. : If necessary, retension the chain. A new chain has to be retensioned more often than one that has been in use for some time. : Check chain tension frequently - see chapter "Operating Instructions". For automatic and reliable lubrication of the chain and guide bar - use only an environmentally compatible quality chain and bar lubricant with non-fling additive or the rapidly biodegradable STIHL BioPlus is recommended. 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, clutch 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. 28 MSE 140 C, MSE 160 C, MSE 180 C, MSE 200 C