2006 Arctic Cat DVX 400 Service Manual, Page 13Get this manual
NOTE: The camshaft lobes must be in position (A) in order to check valvetappet clearance SP121
NOTE: The valvetappet clearance specification is different for intake and exhaust valvesThe clearance should only be checked when the engine is cold (room temperature)NOTE: Valvetappet clearance adjustment must be checked and adjusted in accordance with the periodic maintenance chart or anytime valve mechanism components are removed and reinstalled
6Insert feeler gauge between the tappet and the camshaftThe clearance must be within specifications
5Remove the valve timing inspection plug (1) and the generator cover cap (2); then rotate the crankshaft with socket wrench to top-dead-center (TDC) on the compression strokeThe "T" line on the alternator rotor is aligned with the triangle mark on the alternator coverSP125