Remove carburettor - see 13 11 100.
Drain some of the coolant.
Note when fitting: Bleed cooling system - see 17 00 039.
Carburettor identification:

Model	Part Number	Data Plate
	on Data Plate	Colour
2,5 CS	1 255 598	no colour
2,5 CS	1 256 520	no colour
2800 CS	1 255 600	black
2800 CSA	1 256 524	blue
2800 CS USA	1 256 525	yellow
2800 CSA USA	1 256 525	yellow
3,0 CS	1 255 950	black
3,0 CSA	1 255 951	violet
3,0 CS USA	1 255 952	copper
3,0 CSA USA	1 257 594/1	brown
Carburettor with
heat sensitive	1 262 769	brown/long
bypass starter
2.8 and 3.0 litre

13 11 100
17 00 039