Bombardier SeaDoo 1990 factory shop manual, Page 40Get this manual
Section 03 ENGINE Sub-section 03 (TOP END)
17,18,19, Screw, WasherCyllinder
Apply grease 293 550 010) below the headInstall and torque screws in criss-cross seauence for each cylinder to 22 N-rn (16 lbfmft)Torque screws to 22 N-m 116 Ibf-fti
Make sure to install large 0-rings around spark plugs holes and small O-ring where shownLarge O-rings
001 003 040
Small 0-rino
1,4,6, ScrewCylinder Head Cover
Torque screws to
F001 003 173
22 Nm (16 Ibfft)
Install cover over cylinder head The two longer screws must be installed on oval-shaped housing Make sure to install ignition housing support and flame arrester support