Bombardier SeaDoo 1997 factory shop manual, Page 66Get this manual
Section 03 ENGINE Sub-Section 05 (TOP END)
787 Engine The exhaust manifold is used to align cylinders
787 Engine Prior installation, apply synthetic grease below screw head and Loctite 515 on screw threadsInstall M10 105 screws on exhaust side and the M10 73,5 on opposite sideTorque screws in criss-cross sequence for each cylinder to 20 Nm (15 lbfft)Repeat the procedure, retightening all cylinder screws to 40 Nm (30 lbfft)2 2
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787 ENGINE 1Aligning cylinders using exhaust manifold
17,18, Cylinder Screw