Stihl MS 291 Product Instruction Manual - Page 39

Operating Instructions - carburetor

Get Stihl MS 291 PDF manuals and user guides View all Stihl MS 291 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 39 highlights

N Pull the hand guard toward the handlebar The chain brake is released - the chain saw is ready for use. Open the throttle only when the chain brake is off. Increased engine speeds with the chain brake on (saw chain is stationary) will quickly damage the clutch and chain brake. At very low outside temperatures N let the engine warm up briefly with the throttle slightly open N if necessary, configure for winter operation, see "Winter Operation" Switch off the engine N Move the Master Control Lever to the stop position 0 If the Master Control lever was moved from the position starting acceleration n to the stop position 0 - afterwards simultaneously press the throttle trigger lockout and the throttle trigger. 001BA186 KN If the engine does not start The Master Control lever was not returned from the position choke shutter closed l to starting acceleration n in time, the engine may be flooded. N Move the Master Control Lever to the stop position 0 N Remove the spark plug - see "Spark plug" N Dry spark plug N Crank the engine several times with the starter - to clear the combustion chamber N Replace the spark plug - see "Spark plug" N Set the Master Control lever to starting acceleration n - even if the engine is cold N Restart the engine English Operating Instructions 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 during 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. During work Do not make the mixture leaner to achieve an apparent increase in power - this could damage the engine - see "Adjusting the Carburetor". Open the throttle only when the chain brake is off. Running the engine at high revs with the chain brake engaged (chain locked) will quickly damage the shortblock and chain drive (clutch, chain brake). Check chain tension frequently A new saw chain must be retensioned more frequently than one that has been in use already for an extended period. MS 271, MS 291, MS 291 C 37

  • 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
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
MS 271, MS 291, MS 291 C
English
37
N
Pull the hand guard toward the
handlebar
The chain brake is released – the chain
saw is ready for use.
At very low outside temperatures
N
let the engine warm up briefly with
the throttle slightly open
N
if necessary, configure for winter
operation, see "Winter Operation"
Switch off the engine
N
Move the Master Control Lever to
the stop position
0
If the Master Control lever was moved
from the position starting
acceleration
n
to the stop position
0
–
afterwards simultaneously press the
throttle trigger lockout and the throttle
trigger.
If the engine does not start
The Master Control lever was not
returned from the position choke shutter
closed
l
to starting acceleration
n
in
time, the engine may be flooded.
N
Move the Master Control Lever to
the stop position
0
N
Remove the spark plug – see
"Spark plug"
N
Dry spark plug
N
Crank the engine several times with
the starter – to clear the combustion
chamber
N
Replace the spark plug – see
"Spark plug"
N
Set the Master Control lever to
starting acceleration
n
– even if
the engine is cold
N
Restart the engine
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 during 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.
During work
Check chain tension frequently
A new saw chain must be retensioned
more frequently than one that has been
in use already for an extended period.
Open the throttle only when the
chain brake is off. Increased
engine speeds with the chain
brake on (saw chain is stationary)
will quickly damage the clutch and
chain brake.
001BA186 KN
Operating Instructions
Do not make the mixture leaner to
achieve an apparent increase in
power – this could damage the
engine – see "Adjusting the
Carburetor".
Open the throttle only when the
chain brake is off. Running the
engine at high revs with the chain
brake engaged (chain locked) will
quickly damage the shortblock
and chain drive (clutch, chain
brake).