Holder C-Trac 4.74 - Manual (Page 154)

Operating instructions
149 443 153
C 4.74
General remarks on maintenance
1
Bild_C157
2
Bild_C235
Work on the electrical system
Before performing any services on the electrical equipment,
switch off power with the battery isolating switch (1).
- The switch must be horizontal, the toggle removed.
CAUTION
Disconnect the battery ground lead (2).
Do not place any metal parts on the battery terminals. Risk
of short circuit!