![background image](http://html2.mh-extra.com/html/ics/680gc/680gc_service-manual_3546494050.webp)
49
© 2011 ICS- Blount Inc Specifications and pricing are subject to change without notice. P/N 525747 REV12Sep2012
680GC SERVICE MANUAL
13. CYLINDER & PISTON
13.1
Remove carburetor base screws.
A. Remove carburetor base from rear
manifold. Push rear manifold through
carburetor base while holding carburetor
base.
B. Remove carburetor base from pulse tube.
13.2
Remove pulse tube and protective spring
from cylinder base.
13. This section covers the removal, inspection and assembly of the cylinder, piston and
related components. Removal of several component groups is required. Refer to sections 5, 6,
10 and 12 if necessary.
NOTE:
When replacing the 680GC cylinder and
piston it is necessary to tune the carburetor
prior to returning the saw to service. See
section 23.