English
Setting the idle speed
Speed erratic when idling; poor
acceleration (despite low speed
screw = 1/4)
Adjusting the Carburetor
Basic information
LA
The carburetor comes from the factory
with a standard setting.
H
1
/2
L
LA
1
/4
L
H
1
/2
L
1/4
L
The carburetor has been adjusted for
optimum performance and fuel
efficiency in all operating states.
The adjusting screws on this carburetor
can only be set within narrow limits.
Engine stops when idling
Idle setting is too lean –
N
Set the low speed screw (L) so that
it is 1/4 turn open.
N
Turn the low speed screw (L)
counterclockwise until the engine
runs and accelerates smoothly – but
no further than the stop
Standard setting
N
Turn the idle speed adjusting
screw (LA) clockwise until the saw
chain begins to run – then turn it
back 1/4 turn.
Whenever the low speed screw (L) has
been adjusted, at least one adjustment
must also be made on the idle speed
adjusting screw (LA).
Saw chain rotates at idle speed
H
1
/2
L
1/4
H L
N
Set the low speed screw (L) so that
it is 1/4 turn open.
Correcting the carburetor setting for
use at high altitudes
N
Turn the idle speed screw (LA)
counterclockwise until the chain
stops running – then turn another
The setting may have to be marginally
corrected if engine performance is
unsatisfactory at high altitudes.
N
N
Switch off engine
1/4
turn in the same direction.
Check the air filter – clean or
replace it if necessary.
If the saw chain continues to keep
rotating in idle even after
adjustment, have it checked by a
servicing dealer.
N
N
N
Check the standard setting
Let the engine warm up
N
Check the spark arresting screen in
the muffler (present only in some
countries) – clean or replace it if
necessary.
Turn the high speed screw (H)
clockwise (leaner) – max. up to the
stop
N
N
Turn the high speed screw (H)
counterclockwise as far as possible
(max. 1/2 turn)
If you make the setting too lean it
will increase the risk of engine
damage through lack of
lubrication and overheating.
Turn the low speed screw (L)
clockwise – as far as possible – then
back off 1/4 turn.
3
8
MS 880
| Categories | Chainsaw Manuals, STIHL Chainsaw Manuals |
|---|---|
| Tags | STIHL MS 880 |
| 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, Chainsaw |
| Document File Type | |
| Publisher | stihl.com |
| Wikipedia's Page | Stihl |
| Copyright | Attribution Non-commercial |
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