Check CO content. Setpoint see table in section «Ignition system».
If the CO content deviates from the set value, remove the seal from the CO content adjusting screw -2-. To do this, pierce the plastic cap in the middle, screw in the corresponding screw or self-tapping screw and pull out the screw together with the seal. If required, remove the air filter and install again.
Adjust the set value of the CO content by turning the adjusting screw.
Place a new filling.
Turn off meters.
The 2V4 carburetor is installed on BMW-316 models produced before August 1983.
1 Air damper connecting rod
2 enrichment tube. 2nd stage
3 Fork
4 Air filter mounting bolt
5 Air damper
6 Enrichment tube, 2nd stage
7 Fuel supply hose fitting
8 Ignition delay adjustment fitting
9 Connecting hose TN 10
10 Fuel supply valve
11 Carburetor cover
12 Float chamber housing
13 Valve off I idle
14 TN expansion element
15 Retaining ring for air damper cover
16 Air damper housing
17 Vacuum box Pulldown
18 Idle speed adjustment screw
19 Throttle assembly
20 Hose to Pulldown
21 Throttle adjusting screw
22 Hose to throttle control
23 Throttle cable attachment
24 Adjusting screw for CO content
25 Hose to vacuum diaphragm
26 Pump drive lever
27 Vacuum diaphragm, 2nd stage
28 Pump rod with spring
29 Locking lever
30 Rotary return spring, 2nd stage
31 Segment lever
32 Throttle control
33 Throttle cable segment
34 Throttle lever