Disconnect multiple plug (1).
Loosen clamp (2).
Open quick lock.
Lift out air flow sensor with air cleaner.

NDetach air flow sensor at air cleaner.

Pump contact (A) must be open at off position.
The pump contact may only be closed while starting and when
the engines is running, i.e. the fuel pumps is supplied with current.
This prevents flooding the cylinders with fuel.

The fuel/air ratio (CO % by vol.) at idle the speed can be
altered with the bypass control screw (7).
The damping volume in damping chamber (5) and the compensation
valve gap (4) influence the engine´s transition behaviour.
1 To engine
2 Baffle plate
3 Check valve
4 Compensation valve
5 Damping chamber
6 Bypass
7 Bypass control screw