Stihl HT 73 Instruction Manual - Page 21
Checking Chain Lubrication, Adjusting Telescopic Shaft, Fitting the Harness, Shoulder strap
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english / USA Checking Chain Lubrication Adjusting Telescopic Shaft Fitting the Harness 1 390BA030 KN 390BA015 KN 390BA016 KN The saw chain must always throw off a small amount of oil. : Always check chain lubrication and the oil level in the tank before starting work. Never operate your pruner without chain lubrication. If the chain is run dry, the whole cutting attachment will be irretrievably damaged within a very short time. Inadequate lubrication can be caused by a dirty oil strainer: Have the oil strainer between the tank and pump cleaned or replaced by your STIHL dealer. Every new chain has to be broken in for about 2 to 3 minutes. After breaking in the chain, check chain tension and adjust if necessary - see chapter "Checking Chain Tension". Always shut down the engine and put on the chain guard. : Slacken off the screw. : Adjust shaft to required length. : Tighten the screw firmly. 2 Shoulder strap* : Put on the shoulder strap (1). : Adjust length of strap so that the spring hook (2), with the unit attached, is at about the same height as your right hip. * see "Guide to Using this Manual" 20 HT 73