2002 Bombardier Quest 650XT Service Manual, Page 110Get this manual
Subsection 08
Section 03 ENGINE (CYLINDER AND HEAD)
CAMSHAFT LOBEEXHAUST VALVE NEW MINIMUM NEW MAXIMUM SERVICE LIMIT 31.147 mm (1.226 in) 31.347 mm (1.234 in) 31.100 mm (1.224 in)
CAMSHAFT LOBEINTAKE VALVE NEW MINIMUM NEW MAXIMUM SERVICE LIMIT 31.369 mm (1.235 in) 31.569 mm (1.243 in) 31.300 mm (1.232 in)
CAMSHAFT BEARING JOURNALMAG SIDE
R610motr117A
NEW MINIMUM NEW MAXIMUM SERVICE LIMIT
39.927 mm (1.5719 in) 39.935 mm (1.5722 in) 39.920 mm (1.5716 in)
1Camshaft lock 2Camshaft
Cleaning
Remove carbon deposits from combustion chamber, exhaust port and piston top