Sears 536.79751 Carburetor Adjustment, Making Adjustmentsthat Require Engine to be RUNNING, Keep

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	SERVICE
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To	replace the	blade,	do the following:			•	Adjust	the	idle-speedadjustment needle in the
•	Disconnect	the spark		plug wire,.			same manner as the high-speed adjustment needle°

=Remove the flange nut (See Fig. 12) securing the blade to the drive shall

eRemove the blade,.

o Install the new blade and tighten the nut securely,

•Reconnect the spark plug wire.

TIGHTENING

CARBURETOR ADJUSTMENT

IMPORTANT: NEVER ATTEMPT TO CHANGE THE MAXIMUM ENGINE SPEED., EXCES- SIVE SPEEDS CAUSEDBY BY-PASS- ING THE GOVERNOR CAN CAUSE DAMAGE TO THE ENGINE.

Never make unnecessary adjustments to the carburetor_ The carburetor was set at the factory to operate effe- ciently for most applications° However, if adjustments are required, we recommend that you contact a competent repairman such as at aSEARS Service Center. Ifyou feel that you are competent to make the carburetor adjust- ments, do the following:

eTurn the high-speed adjustment needle (see Fig.

13)clockwise to "finger tight" only. Use a regular screwdriver to turn the idle speed adjustment needle clockwise

IMPORTANT: THE NEEDLES AND/OR SEATS CAN BE DAMAGED IF OVERTtGHTENED

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CAUTION: USE EXTREME CARE WHEN

MAKING ADJUSTMENTSTHAT REQUIRE

THE ENGINE TO BE RUNNING, KEEP

HANDS, FEET, HAiR AND LOOSE CLOTH-

ING AWAY FROM ANY MOVING PART.

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Turn the high-speed and the idle-speedadjustment needles counterclockwise one (1) turn, This adjust- ment will allow the engine to be started..

oStart lhe engine and move the throttle control lever to FAST position and allow the engine to warm upo

o

Turn the high-speed adjustment needle counter-

clockwise until the engine starts to cut off, Note the " position of the high-speed adjustment needle.

•Turn the high-speed adjustment needle c!ockwise until the engine starts to cut off. Note the position of the high-speed adjustment needle..

•Turn the high-speed adjustment needle half way between the two cut off points

•Move the throttle control lever to the idle speed.

WRENCH

FLANGE

BLADENUT

FIG_ 12

HiGH SPEED

ADJUSTMENT NEEDLE

FIG. 13

14