© 2011 ICS | Blount, Inc. Specifications and pricing are subject to change without notice. P/N 550416 REV06012011660GC SERVICE MANUAL4313 This section covers thedisassembly, inspection andassembly of the cylinder, pistonand related components.Removal of several componentgroups is required. Refer tosections 5, 6, 10, and 12if necessary.13.1 Remove carburetor base screws (3).A Remove carburetor base bracketfrom rear manifold.B Remove carburetor base bracketfrom pulse tube.13.2 Remove pulse tube and protectivespring from cylinder base.NOTE: When replacing the 660GC cylinderand piston it is necessary to tune thecarburetor prior to returning the saw toservice (see section 22).13. CYLINDER & PISTON