Stihl MS 311 Product Instruction Manual - Page 26
Tensioning the Chain, Checking Chain Tension
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English 3 11 24 Tensioning the Chain Checking Chain Tension 001BA187 KN 133BA024 KN 143BA007 KN N Fit the guide bar over the studs (1) - the cutting edges on the top of the bar must point to the right. N Engage the peg of the tensioner slide in the locating hole (2) -- place the chain over sprocket (3) at the same time. N Turn the tensioning screw (4)clockwise until there is very little chain sag on the underside of the bar - and the drive link tangs are engaged in the bar groove. N Refit the sprocket cover and screw on the nuts only fingertight. N Go to chapter on "Tensioning the Saw Chain" 1 Retensioning during cutting work: N Shut off the engine. N Loosen the nuts. N Hold the bar nose up. N Use a screwdriver to turn the tensioning screw (1) clockwise until the chain fits snugly against the underside of the bar. N While still holding the bar nose up, tighten down the nuts firmly. N Go to "Checking Chain Tension". A new chain has to be retensioned more often than one that has been in use for some time. N Check chain tension frequently - see chapter on "Operating Instructions". 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, retension the chain. A new chain has to be retensioned more often than one that has been in use for some time. N Check chain tension frequently - see chapter on "Operating Instructions". 24 MS 311, MS 391
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