Tks for all offered help,
It was a d1105 as told by a member who called me, however upon taking a look at machine by the guy who services it it was more than just filters
He stripped engine and cracked cylinder head , ouch .
Well after spending a day trying to source a recon i went for new head, priced at my local kubota dealer £700 plus vat , of couse it doesnt stop there , whilst machine out might as well give it a good overall , in the end i ordered a new head from a marine parts stockist price £390 plus , even air filter a tenner cheaper
so all in all a decent saving, some times it pays to shop around !(when you know the iten your buying is identical )
Geoff.
ps , before the perty owners have a go.
first real ;)expense in 7 years