English / USA
Adjusting the Carburetor
General Information
Adjusting Idle Speed
Engine stops while idling
Your carburetor comes from the factory
with a standard setting.
:
Carry out standard setting with the
This setting provides an optimum fuel-air
mixture under most operating
conditions.
low speed screw (L).
:
Turn the idle speed screw (LA)
clockwise until the engine runs
smoothly – the drilling spindle must
not rotate.
With this carburetor it is only possible to
adjust the high speed screw within fine
limits.
Standard Setting
L
1
H
Drilling spindle rotates when engine
is idling
LA
:
:
Shut down the engine.
:
Turn the idle speed screw (LA)
counterclockwise until the drilling
spindle stops rotating – then turn the
screw about another half to one full
turn in the same direction from that
position.
Remove the auger from the
machine.
:
:
Check air filter and clean or replace
as necessary.
Check that the throttle cable is
properly adjusted and readjust if
necessary – see chapter on
"Adjusting the Throttle Cable".
:
:
Turn the high speed screw (H)
counterclockwise as far as stop
3
–
max. / turn
4
Carefully turn the low speed
screw (L) down onto its seat
clockwise. Then open it one turn
counterclockwise.
:
:
Start and warm up the engine.
Adjust idle speed with the idle speed
screw (LA) so that the drilling
spindle does not rotate.
20
BT 121
| Categories | Auger Drill Manuals, Stihl Auger Drill Manuals |
|---|---|
| Tags | STIHL BT 121 |
| Download File |
|
| Document Type | Operator's Manual |
| Language | English, Español |
| Product Brand | STIHL. Stihl Inc, USA - Corporate phone: (757) 486-9100. International Support Information: http://stihl.com Email: info@stihl.com, Auger |
| Document File Type | |
| Publisher | stihl.com |
| Wikipedia's Page | Stihl |
| Copyright | Attribution Non-commercial |
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