Stihl BR 800 C-E MAGNUM Instruction Manual - Page 27

Engine Management, Adjusting the Carburetor, Spark Plug

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Engine Management Adjusting the Carburetor Exhaust emissions are controlled by the design of the engine and components (e.g. carburation, ignition, timing and valve or port timing). Adjusting Idle Speed Engine stops while idling: N Turn the idle speed screw (LA) slowly clockwise until the engine runs smoothly. 0000-GXX-6224-A0 0000-GXX-5396-A0 English Spark Plug If there is a loss of engine power, the machine is difficult to start or runs poorly at idle, first check the spark plug. Install a new spark plug after approximately 100 operating hours or earlier if the electrodes are eroded/corroded. The 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 degrade performance. Removing the Spark Plug 3 1 4 2 N Loosen the screw (1). N Remove the cover (2). N Pull off the spark plug boot (3). N Unscrew the spark plug (4). BR 800, BR 800 X 25

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BR 800, BR 800 X
English
25
Exhaust emissions are controlled by the
design of the engine and components
(e.g. carburation, ignition, timing and
valve or port timing).
Adjusting Idle Speed
Engine stops while idling:
N
Turn the idle speed screw (LA)
slowly clockwise until the engine
runs smoothly.
If there is a loss of engine power, the
machine is difficult to start or runs poorly
at idle, first check the spark plug.
Install a new spark plug after
approximately 100 operating hours or
earlier if the electrodes are
eroded/corroded.
The 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 degrade performance.
Removing the Spark Plug
N
Loosen the screw (1).
N
Remove the cover (2).
N
Pull off the spark plug boot (3).
N
Unscrew the spark plug (4).
Engine Management
Adjusting the Carburetor
0000-GXX-6224-A0
Spark Plug
3
4
2
1
0000-GXX-5396-A0