Adjusting The Carburetor - Stihl HS 86 Instruction Manual

Paper filter
2
Turn the choke lever to g
N
Take out the screw (1).
N
Remove the filter cover (2).
N
Clean away loose dirt from around
N
the filter and inside the filter cover.
Remove and check the filter
N
element (3) – replace if dirty or
damaged.
Fit the filter in the filter housing.
N
HS 86 R, HS 86 T
1
Position filter cover against the left
N
side of the filter housing and swing it
to the right – the two lugs (arrows)
must engage the filter cover
openings.
Insert the screw and tighten it down
N
firmly.
3

Adjusting the Carburetor

General Information
The carburetor comes from the factory
with a standard setting.
This setting provides an optimum fuel-air
mixture under most operating
conditions.
Preparations
Shut off the engine.
N
Check the air filter and clean or
N
replace if necessary.
Check the spark arresting screen
N
(not in all models, country-specific)
in the muffler and clean or replace if
necessary.
Inspect cutting blades and clean if
N
necessary (clean, move freely, not
warped).
Different Standard Settings
Different carburetors are installed at the
factory. A different standard setting is
necessary for each of these carburetors.
Standard setting A
High speed screw (H) = 3/4
–
Low speed screw (L) = 1
–
Standard setting B
High speed screw (H) = 3/4
–
Low speed screw (L) = 3/4
–
English
13