@KennyPowers If this is the merc 60hp there is a known problem with the powerhead gasket / grommet disintegrating. Make sure when it's repaired that they use the updated merc kit as below.
"That'll be the grommet closed up where the water pipe meets the adaptor plate. It's a common problem, we've done 2 this week. Mercury have a re work kit to solve it!You'll need a 32-897971A01 water tube/seal kit, 27-892320001 adapter plate gasket, 27-892319001 powerhead gasket, 10-4007455 bolt, as it usually snaps when you remove it. £164.45 incl vat!!!!!!"