2004 Bombardier Outlander 330/400 Factory Service Manual, Page 201Get this manual
Section 04 FUEL SYSTEM Subsection 02 (FUEL CIRCUIT)
Using air pump from engine leak test kit (PN 861 749 100) inject air into fuel tankSee next photo
V07F0IA
1Fuel gauge 2Rear fender 3Fuel gauge gasket
V07F0HA
1Special cap on tank 2Air pump
Inspection
Check if fuel gauge gasket is brittle, hard or crackedReplace if necessaryCheck if the float moves freely between its supports