Stihl HT 75 Instruction Manual - Page 32

Spark Arresting Screen* in Muffler, Checking the Spark Plug, Erratic idling behavior, too rich

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

Page 32 highlights

Spark Arresting Screen* in Muffler english Checking the Spark Plug Erratic idling behavior Idle setting too rich: : Turn low speed screw (L) clockwise (about 1/4 turn) until the engine runs and accelerates smoothly. 392BA035 KN 000BA002 KN HT 70, HT 75 If the engine is low on power, check the spark arresting screen in the muffler. : Lift spark arresting screen and pull it out sideways. : Clean spark arresting screen if necessary. : If screen is damaged or coked up, fit a new one. : Refit the spark arresting screen. Wrong fuel mix (too much engine oil in the gasoline), a dirty air filter and unfavorable running conditions (mostly at part throttle etc.) affect the condition of the spark plug. These factors cause deposits to form on the insulator nose which may result in trouble in operation. * see "Guide to Using this Manual" 31

  • 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
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
31
HT 70, HT 75
english
Erratic idling behavior
Idle setting
too rich:
:
Turn low speed screw
(L)
clockwise
(about 1/4 turn) until the engine runs
and accelerates smoothly.
If the engine is low on power, check the
spark arresting screen in the muffler.
:
Lift spark arresting screen and pull it
out sideways.
:
Clean spark arresting screen if
necessary.
:
If screen is damaged or coked up, fit
a new one.
:
Refit the spark arresting screen.
*
see “Guide to Using this Manual”
Wrong fuel mix (too much engine oil in
the gasoline), a dirty air filter and
unfavorable running conditions (mostly
at part throttle etc.) affect the condition of
the spark plug. These factors cause
deposits to form on the insulator nose
which may result in trouble in operation.
Spark Arresting Screen* in
Muffler
392BA035 KN
Checking the Spark Plug
000BA002 KN