2004 Ski-Doo Racing Handbook, Page 216Get this manual
SECTION 062004 800 MOD ENGINE KIT
Cover PN 420 810 825 Gasket PN 420 931 565 150 cc oil (injection oil) You must eliminate the two (2) oil injection holes(use plugs or hoses) WARNING: Note that the engine water pump gear oil cavity has to be filled with 150 mL of oil by removing oil pump block off plate and venting (opening empty bottle) then add 70 mL to bottle(Best done when engine is on the work bench with the exhaust side facing work bench)