JLG X23J - X700AJ Service Manual - Manual (Page 180)

SECTION 3 - CHASSIS & TURNTABLE
3121448 – JLG Lift – 3-153
CHOKE DIAPHRAGM INSPECTION
Check for smooth operation by pressing the rod with a fin-
ger.
Connect a vacuum pump to the choke diaphragm and
apply vacuum.
The diaphragm should hold.Replace the choke dia-
phragm if necessary.
PILOT SCREW REPLACEMENT
Leave the pilot screw(1) and limiter cap(2) in place during
carburetor cleaning. Remove only if necessary for carbu-
retor repair.Removal of the limiter cap requires breaking
the pilot screw. A new pilot screw and limiter cap must be
installed.
When the limiter cap has been broken off, remove the bro-
ken pilot screw.
(3)
(4)
(2)
STOP
CARBURETOR
BODY
Pilot screw will break at narrow point.
(2)
(1)