Anatomy of a carriage - main bed and ribber

A - tension dial. Higher numbers = looser stitches
B - Normal/Hold - to select partial knitting
D - cam buttons - tuck, slip, fair-isle etc
E - main yarn feeder
G - colour change lever. When raised, will activate colour changer
H - pile knitting lever
I - carriage disengage. Will unlock ribber carriage from main carriage
J - Normal/Hold - to select partial knitting
K - tension dial. Higher numbers = looser stitches
L - Slip levers. Carriage will slip stitches in that direction, if lever set to 0. Used for circular knitting.
Z - electronic cable connection (obscured by handle)

Carriage shown is an SK840 electronic machine, and SRP60N ribber