Fitting The Sprocket Cover - Stihl 9 Instruction Manual

Fitting the sprocket cover

Fit collar nut  on the stud bolt  . On machines without
a chain brake, also fit the pan head screw (2). Both the collar
nut and pan head screw should only be screwed down
temporarily at this stage.
Hold the bar nose  up and turn the tensioning screw 
until the Oilomatic chain is properly seated on the underside
of the bar.
The Oilomatic chain is correctly tensioned when it fits snugly
against the underside of the bar but can still be pulled easily
along the bar.
After finally tensioning the chain, again hold the bar nose up
and securely tighten down the collar nut  and - on
machines without chain brake - the pan head screw  .
Chain tension and lubrication are extremely important in
respect of the cutting results obtained and the service life of
the whole cutting attachment. Chain lubrication must always
be checked before you start cutting. Chain tension should
be checked frequently during cutting and corrected as ne-
cessary. See chapter "Guide Bar, Chain and Sprocket" for
further details.
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Top: Tensioning the chain
Center: Holding bar nose and tightening the hexagon nut
Bottom: Checking chain tension
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