I go the manual and parts list from Cookham. Here is the email....
D.B. MARINE
COOKHAM BRIDGE
COOKHAM ON THAMES
BERKSHIRE
SL6 9SN
TEL :- 01628 526 032
FAX :- 01628 520 564
CONTACT MARK KENNETT / MARK SINCLAIR
THE PART NUMBER OF THE W/SHOP MANUAL IS :- P601SER0491088, FOR THE PARTS LIST WE WILL REQUIRE THE SERIAL NUMBER OF YOUR ENGINE, WHICH IS STAMPED INTO THE BLOCK ON THE TOP OF THE LUG, WHERE THE INJ. PUMP IS FITTED TO THE ENGINE.