Not sure if the link below will work but if it does page 34 I think is for bleeding the fuel system, taken straight off the Volvo Penta Website

http://vppneuapps.volvo.com/ww/PIE/ViewPdf.aspx?n=71772&r=2002-02-15-11-23-05&t=PDF1P&a=7741986&p=T403&d=Owners%20Publication&s=2999068&lang=en-GB