Stihl HS 75 Instruction Manual - Page 17

Motor Management, Adjusting the Carburetor, L = 1

Get Stihl HS 75 PDF manuals and user guides View all Stihl HS 75 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 17 highlights

English / USA Motor Management Adjusting the Carburetor Exhaust emissions are controlled by the design of the fundamental engine parameters and components (e.g. carburation, ignition, timing and valve or port timing) without the addition of any major hardware. Your carburetor does not have a high speed adjusting screw (H screw). Adjustment of maximum engine speed is not necessary. The carburetor is set at the factory to provide an optimum fuel-air mixture under most operating conditions. Idling and part-load emissions are minimized by limiting the idle mixture. : Check the cutting blades and clean if necessary (they must be clean, move freely and not be bent or warped). : Check the air filter and clean it if necessary. : Warm up the engine. : Carefully screw the low speed screw (L) down onto its seat. Then open it one turn counterclockwise (standard setting, L = 1). 16 HS 75, HS 80

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
16
English / USA
HS 75, HS 80
Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components (e.g.
carburation, ignition, timing and valve or
port timing) without the addition of any
major hardware.
Your carburetor does not have a high
speed adjusting screw (H screw).
Adjustment of maximum engine speed is
not necessary.
The carburetor is set at the factory to
provide an optimum fuel-air mixture
under most operating conditions.
Idling and part-load emissions are
minimized by limiting the idle mixture.
:
Check the cutting blades and clean
if necessary (they must be clean,
move freely and not be bent or
warped).
:
Check the air filter and clean it if
necessary.
:
Warm up the engine.
:
Carefully screw the low speed
screw
(L)
down onto its seat. Then
open it
one
turn counterclockwise
(standard setting,
L = 1
).
Motor Management
Adjusting the Carburetor