Instruction Manual

GS 461
English
21
General Information
The carburetor comes from the factory
with a standard setting.
This setting provides an optimum fuel-air
mixture under most operating
conditions.
With this carburetor it is only possible to
correct the adjusting screws within fine
limits.
The ignition module limits maximum
engine speed. Therefore, maximum
engine speed cannot be increased by
turning the high speed screw (H) any
further clockwise (leaner).
Standard Setting
N Shut off the engine.
N Check the air filter and clean or
replace if necessary.
N Turn high speed screw (H)
counterclockwise as far as stop (no
more than 3/4 turn).
N Turn the low speed screw (L)
clockwise as far as stop, then turn it
back 1/4 turn.
Adjusting Idle Speed
Before starting, open the shut-off cock
fully so that water flows to the diamond
abrasive chain – never allow chain to run
dry.
N Carry out the standard setting.
N Start and warm up the engine.
Engine stops while idling or chain runs
while engine is idling
N Turn the idle speed screw (LA)
clockwise as far as stop or until the
chain begins to run – then turn the
screw back 1 1/2 turns.
WARNING
If the chain continues moving when the
engine is idling, have your machine
checked and repaired by your servicing
dealer.
Erratic idling behavior, poor acceleration
(even though low speed screw is open
1/4 turn)
Idle setting is too lean
N Turn the low speed screw (L)
counterclockwise until the engine
runs and accelerates smoothly.
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L).
Fine Tuning for Operation at High
Altitude
A slight correction of the setting may be
necessary if engine does not run
satisfactorily:
Adjusting the Carburetor
3443BA001 KN
3443BA002 KN
3443BA003 KN