2001 Arctic Cat ATVs factory service and repair manual, Page 29Get this manual
! CAUTION
The feeler gauge must be positioned at the same angle as the valve and valve adjuster for an accurate measurement of clearanceFailure to measure the valve clearance accurately could cause valve component damageVALVETAPPET CLEARANCE (250 cc) Intake 0.03-0.08 mm (0.001-0.003 in Exhaust 0.08-0.13 mm (0.003-0.005 in VALVETAPPET CLEARANCE (300 cc) Intake 0.03-0.08 mm (0.001-0.003 in Exhaust 0.17-0.22 mm (0.007-0.009 in VALVETAPPET CLEARANCE (400500 cc) Intake 0.05-0.10 mm (0.002-0.004 in 0.17-0.22 mm (0.007-0.009 in Exhaust
7Install the seat making sure the seat is properly secured
ValveTappet Clearance
(Feeler Gauge Procedure)