Technical data

Section 06 FUEL SYSTEM
Sub-Section 03 (CARBURETORS)
06-03-9
717 AND 787 ENGINES
1. Throttle lever stoppers (behind levers)
2. Adjustment nut
Tighten jam nut and recheck adjustment.
WARNING : Make sure idle speed screw
contacts stopper when throttle lever is ful-
ly released at handlebar.
After throttle cable adjustment, always proceed
with oil injection pump adjustment. Refer to LU-
BRICATION SYSTEM 07-02.
CAUTION : Improper oil injection pump
synchronization with carburetor can
cause serious engine damage.
2, Low Speed Screw
587 ENGINE
1. Low speed screw
717 AND 787 ENGINES
1. Low speed screw (PTO)
2. Low speed screw (MAG)
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.
NOTE : Turning screw clockwise leans mix-
ture and turning screw counterclockwise
enriches mixture.
Start and warm up engine.
CAUTION : Water must be supplied to
cool engine.
Check that engine idles and runs smoothly. Make
sure engine reacts quickly to throttle lever depres-
sion. If necessary, readjust low speed screw
(±þ1/4 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 counter-
clockwise enriches mixture and turning
screw clockwise leans mixture.
CAUTION : Do not attempt to adjust high
speed screw by removing plastic cap.
F01F32B
1
2
;
-
F01F0TC
1
Watercraft
model
SP SPX SPI XP HX GTS GTI
Low speed
screw (turn)
1-1/
4
1-1/
4
1-1/
4
1
1-3/
4
1-1/
4
1-1/
4
F01F33A
21
-
-
-
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