BOMBARDIER SEA-DOO SPX 5838 1998 Shop Manual page 191

Section 06 FUEL SYSTEM
Subsection 04 (CARBURETOR)
2, Low Speed Screw
1
F06F0GA
717 ENGINE
1. Low speed screw
1
F01F33A
787 ENGINE
1. Low speed screw (PTO)
2. Low speed screw (MAG)
F06F0HA
947 ENGINE
1. Low speed screw (PTO side shown)
06-04-10
2
1
-
CAUTION
Do not attempt to set engine idle speed with
low-speed screw.
Tighten low speed screw until a slight resistance
is felt. Then, back it off to the specification as per
following chart.
WATERCRAFT MODEL
SPX
GS/GTS/GTI
GSX Limited/
XP Limited/GTX Limited
NOTE: Turning screw clockwise leans mixture and
turning screw counterclockwise enriches mixture.
Start and warm up engine.
-
CAUTION
If watercraft is out of water, engine must be
cooled using the flush kit.
Check that engine idles and runs smoothly. Make
sure engine reacts quickly to throttle lever depres-
sion. If necessary, readjust low speed screw
(± 1/4 turn).
NOTE: On twin carburetor engines, both low
speed screws must be adjusted exactly the same
way. Never adjust screws more than 1/4 turn at a
time.
14, High Speed Screw
The high speed screw is sealed with a plastic cap
that allows an adjustment of 1/4 turn.
NOTE: Turning screw 1/4 turn counterclockwise
enriches mixture and turning screw clockwise
leans mixture.
-
CAUTION
Do not attempt to adjust high speed screw
by removing plastic cap.
LOW SPEED SCREW
1.5 turns
1.25 turns
2 turns