Technical Information 08.2005
Page 7
TI_08_2005_11_01_02.fm
1.6
Decompression system
The automatic decompression system reduces the
compression upon starting and hence the required
pull on the starter rope.
Cam disk at low speed (starting):
.
Decompression cam (
1
) projects and actuates
the lever (
2
)
.
This lengthens the valve opening time, which
reduces the compression
Cam disk when the engine has started:
.
The centrifugal mechanism retracts the
decompression cam (
1
) – this cancels the effect
of the decompression cam
1.7
Carburetor
.
All-position diaphragm carburetor with
independent idle
.
The range of the high-speed adjusting screw (H)
and the low-speed adjusting screw (L) is limited
by limiter caps (approx. 3/4 turn). This limitation
ensures greater operating safety and
maintenance of future exhaust emission levels
.
Accelerator pump for faster and spontaneous
acceleration (see 5.3).
.
Choke knob with integrated starting throttle
position
1.8
Ignition system
.
Microprocessor-controlled with ignition timing
adjustment
.
Low power-up threshold
1.9
Air filter
.
Large-area paper air filter for long filter service
life
.
Easily accessible
1.10
Muffler
.
Two-chamber muffler with spark arresting
screen, depending on the market concerned.
1.11
Flywheel
.
Weight-optimised geometry