Bombardier SeaDoo 1992 factory shop manual, Page 86Get this manual

Bombardier SeaDoo 1992 factory shop manual, Page 86

Section 03 ENGINE Sub-section 06 (ROTARY VALVE AND RESERVOIIR) Using the depth micrometer again, measure the distance between
on the edges of the seating surface and O-ring groove Cover seating surface ie surface Reverify the clearance At assembly
the rotary valve timing must remain as per originall setting Crankshaft and rotary valve shaft gear backlash Remove PTO flywheel
guardRemove spark plugs, rotary valve cover and valveManually feel backlash at one position, then turn crankshalft about
118 turn and recheckContinue this way to complete one revolutionBackllash must be even all positionsOtherwise overhaul enginle
to find which part is faulty (gear, rotary valve shaft or crankshaft with excessive deflection) Measure at four different
places around the coverAdd the four measurements and divide by to obtain an averageA typical reading should be around 2.67105