Service Procedures: Notes

It is important that the crankcase ventilation system be kept in proper working order to insure proper engine operation. Every 12, 000 miles or 12 months the system should be serviced as follows:

1. Disassemble valve and wash all components in gasoline. Dry all parts with compressed air.
2. The lower plate-valve cannot be disassembled, so it is important to check that valve is properly seating.
3. The hose connections must also be cleaned and rubber checked for cracks to ensure against particles of rubber getting into the valve assembly.
4. Remove valve cover and clean wire gauze filter on all 1970-73 models.