Operating Instructions - Stihl GS 461 Instruction Manual

English
► Press in button to open the decompression
valve.
► Hold and continue cranking the concrete cut‐
ter.
10.8 As Soon As the Engine Runs
1
► Briefly press the throttle trigger (2); the master
control lever (1) jumps to Run F and the
engine begins to idle.
The concrete cutter is now ready for use.
10.9 At Very Low Outside Tempera‐
tures
► Let the engine warm up briefly with the throttle
slightly open.
10.10 Shut off the engine
► Set master control lever to STOP or 0
10.11 If Engine Does Not Start
The master control lever was not returned to its
Warm start n position in time when the engine
turned over for the first time and the engine has
now flooded.
► Remove the spark plug – see "Spark Plug".
► Dry the spark plug
► Set master control lever to STOP or 0
► Crank the engine several times with the starter
to clear the combustion chamber.
► Refit the spark plug – see "Spark Plug".
► Set master control lever to Warm start n –
even if the engine is cold.
► Restart the engine.
10.11.1 Wet filter
► Dry wet filter if necessary – do not expose to
extreme heat.
► If the filter is very dirty, clean the filter thor‐
oughly – see "Cleaning the air filter"
18
STOP
2

11 Operating Instructions

11.1 During the break-in period
A factory new machine should not be run at high
revs (full throttle off load) for the first three tank
fillings. This avoids unnecessarily high loads dur‐
ing the break-in period. As all moving parts have
to bed in during the break-in period, the frictional
resistances in the shortblock are greater during
this period. The engine develops its maximum
power after about 5 to 15 tank fillings.
11.2 During work
CAUTION
Always work with water.
CAUTION
Do not make the mixture leaner to achieve an
apparent increase in power – this could damage
the engine – see "Adjusting the Carburetor".
11.2.1 Check chain tension frequently
The diamond abrasive chain stretches and
begins to sag. The drive links on the underside of
the bar must not come out of the bar groove by
more than 15 mm – the diamond abrasive chain
may otherwise jump off the bar – retension the
diamond abrasive chain – see "Tensioning the
diamond abrasive chain".
If the diamond abrasive chain sags too much,
this leads to significantly increased wear of the
diamond abrasive chain and chain sprocket –
retension the diamond abrasive chain – see
"Tensioning the diamond abrasive chain".
A new diamond abrasive chain must be reten‐
sioned more frequently than one that has been in
use already for an extended period.
11.2.2 After a long period of full-throttle oper‐
ation
After a long period of full-throttle operation, allow
engine to run for a while at idle speed so that the
heat in the engine can be dissipated by flow of
cooling air. This protects engine-mounted com‐
ponents (ignition, carburetor) from thermal over‐
load.
11 Operating Instructions
0458-761-0121-B