5. Make sure that there are no leaks.
7.9.4 To adjust the carburetor
To adjust the carburetor means that you adjust the
engine to the local conditions such as weather, altitude
and fuel.
The carburetor has 3 adjustment controls.
• L = low speed jet
• H = high speed jet
• T = idle adjustment
The low speed jet and the high speed jet adjust the fuel
flow to align with the airflow from the throttle valve
opening. Turn the low speed jet and high speed jet
clockwise to decrease the quantity of fuel. Turn the low
speed jet and high speed jet counterclockwise to
increase the quantity of fuel. Less fuel increases the
engine speed and a more fuel decreases the engine
speed.
The idle speed screw controls the throttle position. Turn
the idle speed screw clockwise gives fast idle speed,
turn it counterclockwise gives lower idle speed.
The high speed jet and the low speed jet in the
carburetor can only be adjusted with the special tool.
Refer to
Servicing tools on page 10
.
Basic factory settings
H = high speed jet 1.5
L = low speed jet 1
7.9.5 To remove and install the intake manifold
1. Remove the starter unit. Refer to
To remove and
install the starter unit on page 14
.
2. Remove the air filter. Refer to
To remove and install
the air filter on page 17
.
3. Remove the carburetor. Refer to
To remove and
install the carburetor on page 23
.
4. Remove the 4 screws, the intake manifold, and the
intake manifold gasket.
5. Install in the opposite sequence.
26 - Repair instructions 1351 - 002 - 25.11.2020
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