User guide

2
NOTE: There are two ways for the front S&S® 79cc head to breathe, through a vacuum port into the intake port or through the air cleaner. The position
of a set-screw must be moved to change the breathing format. S&S 79cc front heads are delivered for vacuum breathing into the intake port, with the set
screw installed in Hole 1.
 
See Picture 1.
Picture 1
Hole 1
 See Picture 1

Hole 2
DANGER
WARNING
Do not run the S&S 79cc head with both Hole 1 and Hole 2 sealed. Also, Do not run the head with both Hole 1 and Hole 2 open.
      
(See Picture 1)

 
 
Do not use any other gasket than the supplied (2 Pack, PN 90-4120) .039” thick gasket on S&S 79cc heads.