Stihl 038 - Fitting the chain on the sprocket

Top: Peg in locating hole — cutting edges
point toward bar nose
Center: Drive link tang
Fitting the chain on the sprocket Bottom: Tensioning the saw chain
the tensioning nut (3) must engage in the lower guide bar
locating hole.
Now tension the chain by turning the tensioning screw (4)
clockwise until there is only very little chain sag on the
underside of the bar. Make sure that the drive link tangs (7)
are properly located in the guide bar groove. Refit the
sprocket cover (2) on the studs (5) and screw on the hexa-
gon nuts (1) finger-tight.
Hold the bar nose (8) up and tension the Oilomatic chain
until it lies against the underside of the bar. While still
holding the bar nose up, tighten down the two hexagon
nuts (1) firmly.
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 by hand. Note that the chain
brake must be released for this purpose.