English / USA
Motor Management
Adjusting the Carburetor
Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components (e.g.
carburation, ignition, timing and valve or
port timing) without the addition of any
major hardware.
General Information
:
:
:
Turn the high speed screw (H)
counterclockwise as far as stop (no
more than 3/4 turn).
The carburetor comes from the factory
with a standard setting.
Carefully screw the low speed
screw down onto its seat
(clockwise).
This setting provides an optimum fuel-air
mixture under most operating
conditions.
Open the low speed screw (L) one
With this carburetor it is only possible to
adjust the high speed screw within fine
limits.
full turn.
Adjusting Idle Speed
Engine stops while idling
Standard Setting
:
:
Check standard setting.
Turn the idle speed screw (LA)
slowly clockwise until the cutting
blades begin to run – then turn the
screw back 2 1/2 turns.
H L
Cutting blades run when engine is
idling
LA
:
:
Check standard setting.
Turn the idle speed screw (LA)
slowly counterclockwise until the
cutting blades stop running – then
turn the screw another 2 1/2 turns in
the same direction.
:
:
Shut off the engine.
Check the air filter and clean or
replace if necessary.
:
Check the spark arresting screen
(not fitted in all markets) in the
muffler and clean or replace if
necessary - see „Spark Arresting
Screen in Muffler.
HS 81 R, HS 81 T
19
| Categories | Hedge Trimmer Manuals, STIHL Hedge Trimmer Manuals, Trimmer Manuals |
|---|---|
| Tags | STIHL HS 81 |
| Download File |
|
| Language | English, Español |
| Product Brand | STIHL. Stihl Inc, USA - Corporate phone: (757) 486-9100. International Support Information: http://stihl.com Email: info@stihl.com, Trimmer |
| Document File Type | |
| Publisher | stihl.com |
| Wikipedia's Page | Stihl |
| Copyright | Attribution Non-commercial |
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