Adjusting Idle Speed - Stihl HT 100 Manual De Instrucciones

English / USA
Standard Setting
: Shut off the engine.
: Check chain tension.
: Check the air filter and clean or
replace as necessary.
: Check adjustment of throttle cable
and readjust if necessary – see
"Adjusting the Throttle Cable".
: Check spark arresting screen* and
clean or replace as necessary.
: Carefully turn both adjusting screws
counterclockwise as far as the stop:
The high speed screw (H) and low
speed screw (L) are now
open.
: Start and warm up the engine.
: Adjust idle speed with the idle speed
screw (LA) so that the chain does
not rotate.
* see "Guide to Using this Manual"
32
Fine Tuning
A slight correction of the setting of the
high speed screw (H) may be necessary
if engine power is not satisfactory when
operating at high altitude or at sea level.
Rule of thumb
: Turn the high speed screw (H)
about one quarter turn for every
3300 ft (1000 m) change in altitude.
: Carry out the standard setting.
: Warm up the engine for about
3 minutes.
: Open the throttle wide.
3
/ turn
4
At high altitude
: Turn the high speed screw (H)
clockwise (leaner), no further than
stop, until there is no noticeable
increase in engine speed.
At sea level
: Turn the high speed screw (H)
counterclockwise (richer), no further
than stop, until there is no
noticeable increase in engine
speed.
It is possible that maximum engine
speed may be reached with the
standard setting in each case.

Adjusting Idle Speed

It is usually necessary to change the
setting of the idle speed screw (LA)
after every correction to the low speed
screw (L).
: Warm up engine for about
3 minutes.
Engine stops while idling
: Turn idle speed screw (LA) slowly
clockwise until the engine runs
smoothly – chain must not rotate.
HT 100, HT 101, HT 130, HT 131