2004 Bombardier Quest/Traxter Series Shop Manual, Page 128Get this manual
Section 03 ENGINE QUEST Subsection 08 (CYLINDER AND CYLINDER HEAD)
Inspection
Spark Plug Tube Check seals on spark plug tubeIf seals are brittle, cracked or hard, replace spark plug tube
R610motr96A R610motr94A
1Spark plug tube 2Seal to the valve cover 3Seal to the cylinder head
1Rocker arm (exhaust side) 2Roller ABore for rocker arm shaft
Rocker Arm Inspect each rocker arm for cracks and scored friction surfacesIf so, replace rocker arm assemblyCheck the rocker arm rollers for free movement, wear and excessive radial playReplace rocker arm assembly as necessaryA
Measure rocker arm bore diameterIf diameter is out of specification, change the rocker arm assemblyROCKER ARM BORE DIAMETER MINIMUM (new) MAXIMUM (new) SERVICE LIMIT 20.007 mm (.7877 in) 20.020 mm (.7881 in) 20.035 mm (.7887 in)