Sears 536.25587 - Manual (Page 33)

SERVICE AND ADJUSTMENTS
THROTTLE CONTROL ADJUSTMENT
(See Fig. 44)
The throttle control has beerr preset at factoiy and acijiistment
should not be riecessary. Check adjustment ap described
below before loosening clamp screw, If adjuotment is
necessary, proceed as follows.
0 Engine speed Is controlled my movement of the throttle
control lever,,
® Move control “B" to 'FAST" position.
0 Swivel "C" should be against side of quarter circle,,
TO ADJUST-
@ Loosen casing clamp screw "A".
@ Move casing and wire in direction shown until swivel is
against side of quarter circle.
0 Re-tighten casing clamp screw "A".
CARBURETOR ADJUSTMENTS
(See Fig. 45)
Minor carburetor adjustment may be required to compensate
for differences in fuel, temperature, altitude or load,
NOTE: The air cleaner must be assembled to carburetor when
running engine.
INITIAL ADJUSTMENT
0 Gently turn the idle mixture screw clockwise until it just
closes,. Turning screw in too far may damage it.
® Next turn idle mixture screw 1-Ш turns counterclockwise.
This initial adjustment will permit the engine to be started
and warmed up (approximately 5 minutes) prior to final
adjustment.
FINAL ADJUSTMENT
0 Start engine and place throttle control in IDLE or SLOW
position.
0 Hold throttle lever against idle stop, and adjust idle speed
screw to obtain 1200 to 1400 RPM,
0 While stiil holding throttle lever, turn idle mixture screw
slowly clockwise (lean mixture) until engine [уй starts to
slow.
0 still holding iever, turn screw slowly counterclockwise
(rich mixture) until engine speed just starts to slow
0 Turn screw to midpoint between rich and lean.
0 Adjust idle speed screw to obtain 900 to 1200 RPM.
0 Release lever.
0 If the engine does no! accelerate properly, re-adjust
carburetor to a slightly richer mixture.
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