1999 Volvo Penta "WT" Models Workshop Manual, Page 24Get this manual
5.0 GL and Gi Models
Disc(m'lect and drain large hose at circulating pump
Starboard
Remove brass drain plugRemove cylinder block drain plugClear hole with small wire to ensure complete drainage
Remove brass drain plug
rJ) Remove cylinder block drain plugClear hole with small wire to ensure complete drainage
5.0 Gi and 5.7 GSi Models Only
rn Front
CD Disconnect the small water by-pass hose at the top of the thermostat housing