Initial Setting; Adjustments; Throttle Stop - Sears GAMEFISHER 225.581508 Owner's Manual

SERVICE AND ADJUSTMENTS
CARBURETOR
NOTE: Adjust the carburetor for better starting and low
speed operation when there are changes in temperature,
humidity or barometric pressure.
The high speed system, which meters fuel from high idle
to wide open throttle, is factory equipped with a jet that is
not adjustable. The jet can be replaced with a jet for high
altitude operation. Consult your Sears Service Center for
installation.
Adjust idle as outlined below:
INITIAL SETTING
NOTE: Do not overtighten
damaged.
- needle and seat may be
BEFORE STARTING MOTOR:
• Remove motor cover.
• Tum idle adjustment needle in, clockwise, until it seats
lightly (Figure 36).
• Back needle out one (1) full turn.
FINAL ADJUSTMENT
IMPORTANT:. DO NOT ADJUST LEANER THAN NECES-
SARY TO OBTAIN sMooTH IDUNG. IT IS BETI'ER TO
HAVE IDLE SET A U'rTLE RICH THAN TOO LEAN. A LEAN
sE-n'ING CAN CAUSE MOTOR DAMAGE.
With boat tied securely to dock, start motor and run until
fully warmed up.
Set controls to lowest reliable idle in neutral gear posi-
tion.
Tum idle adjustment needle slowly open, counterclock-
wise, until motor loses power and begins to roll due to
an over-rich mixture. Note this position (Figure 37).
Slowly tum needle closed, clockwise, until motor runs
smoothly and begins to pick up speed. Continue turning
clockwise until motor pops or stalls due to lean mixture.
Note this position.
Set needle halfway between the two positions.
Repeat, as needed for fine tuning.
THROTTLE STOP
• Your motor isequipped with a throttle stop which can be
adjusted for correct idle speed.
o If needed tum the throttle stop adjusting screw (A) to ob-
tt_n approximately an 800 RPM idle when in neutral
gear (Figure 38).
25
FIGURE 36
IDLE ADJUSTMENT SCREW
RICH LEAN HALFWAY
3 4 5
FIGURE 37
FIGURE 38