Use the following procedure if the crankcase ventilation filter housing requires disassembly and/or the filter requires replacement. Refer to Procedure 003-021 in Section 3.  

Disconnect the crankcase ventilation filter oil drain tube from the crankcase ventilation filter housing. Remove the crankcase ventilation filter oil drain tube from the cylinder…

Depending on the application, two different breather systems are used. • An internal system, which is a part of the rocker lever cover assembly. •…

A new gasket must be installed. Do not reuse an old gasket. Install the head gasket.  

NOTE: Cylinder head gaskets can not be reused. A new cylinder head gasket must be used. Clean the cylinder block and cylinder head combustion deck.…

Remove the cylinder head gasket.

A specific head gasket with an increased thickness is not available for combustion deck resurfacing of the cylinder block or cylinder head. If the combustion…

Install new valve stem seals of the same color as removed and in the same location. See the General Information section of this procedure for…

Clean the seal tower and valve stem with contact cleaner, Part Number 3824510. Inspect the exposed valve stem for scoring or heavy polishing. Inspect the…

NOTE: In order to remove the valve springs with the cylinder head installed, the piston of the cylinder being worked on must be brought to…