CYLINDER HEAD AND VALVES MODEL 20-911 (Cont)
8-13C CLEANING, IN-
Cylinder heads (1)
a. Clean, especially area between
b. Remove gasket material stuck
to bottom of heads.
Wear gloves or other skin protec-
tive equipment when working
with cleaning solvents.
Air filter (3) and
a. Clean with detergent solution
Do not use solvent on air filters.
and let air dry.
b. Replace if cleaning is not
All valve parts
Clean with cleaning solution.
Reed valves (5)
a. Inspect for flatness by plac-
Reed valves must lie perfectly flat.
ing on valve plate (6).
b. Replace if not flat or bent.
High pressure valve as-
semblies (7) and (8)
High pressure valve assemblies
are not repairable. They must be
replaced if defective.
a. Inspect by inserting small tool
in valve holes and push parts
up and down. Movement
should be free.
b. Replace if movement is sticky.
8-16.2 Change 1