Craftsman 247.797855 manual Flails, Carburetoradjustment, Enginespeed

NOTE:Usecautionwhenremovingthebladeto avoid	The carburetor	may	need re-adjusting if engine	lacks
contactingtheweldboltsonthehousing.	power or does	not	idle properly If adjustments	are

®Whensharpeningthe blade,followthe original needed, proceed as follows.

angleof grindasa guide.It isextremelyimportant e Close needle valve (see figure 22) clockwise

thateachcuttingedgereceivesanequalamountof ((-_) finger tight only. Forcing may cause damage

grindingtopreventanunbalancedblade.Anunbal- Then open 1-1/2 turns counterclockwise (v'_). ancedbladewillcauseexcessivevibrationwhen ® Start engine and allow to warm for five minutes.

rotatingat highspeedsandmaycausedamageto e With throttle in FAST position, close needle valve

theunit			clockwise	((-'_) until engine			starts	to lose speed
e The blade	can be tested for	balance by balancing it	(lean mixture)_ Then slowly open needle valve
on a round	shaft screwdriver	or nail. Remove metal	counterclockwise		(_'_) until engine			JUST	BEGINS
from the heavy side until it is balanced evenly See			to run unevenly.. This mixture should be rich
			enough for best		performance		under	Ioado
figure 21.
	.........		e Place throttle control in IDLE position.						adjusting
Nail			If engine	idles	too fast,	turn idle speed
		/	If engine	idles, no further		adjustment		is necessary..

t .......................oTo' o screw counterclockwise (v--_) until slower speed is

obtained°

FIGURE 21.

e When reassembling the blade, tighten to between 550 and 650 inch pounds, or lacking torque wrench, tighten securely

FLAILS

The flails, located inside the housing, may be reversed when they become dull. It is suggested that this procedure be performed by your nearest Sears Service Department.

If engine dies, turn idle speed adjusting screw 1/4 turn clockwise (_). Place throttle control in FAST position and restart engine.

Move throttle control to tDLE position_ If engine does not idle, repeat third step.

e Test the engine by using the chipper-shredder_ If engine tends to stall or die out, it usually indicates that the mixture is slightly lean and it may be nec- essary to open (_'_) the needle valve slightly to provide a richer mixture, This richer mixture may cause a slight unevenness in idling°

	Throttle
Idle Speed	Stop
Adjusting Screw

CARBURETORADJUSTMENT

MADE TO THE ENGINE WHILE THE

_ WARNING: IF ANY ADJUSTMENTS ARE

ENGINE IS RUNNING (E.G. CARBURE-

TOR), KEEP CLEAR OF ALL MOVING PARTS. BE CAREFUL OF HEATED SUR-

FACES AND MUFFLER°

Minor carburetor adjustment may be required to com-

pensate for differences in fuel, temperature, altitude or load..

NOTE: A DIRTY AIR CLEANER WILL CAUSE ENGINE TO RUN ROUGH. BE CERTAIN AIR CLEANER IS CLEAN AND ATTACHED TO THE CARBURETOR BEFORE ADJUSTING CARBURE- TORn DO NOT MAKE UNNECESSARY ADJUST-

MENTS FACTORY SETTINGS ARE SATISFACTO- RY FOR MOST APPLICATIONS AND CONDITIONS,

Never attempt to change maximum engine speed It is pre-setat the factory and should be changed only by a qualified service technician who has the necessary equipment

Throttle

Needle Valve

FIGURE 22.

ENGINESPEED

Your engine speed has been factory seL Do not attempt to increase engine speed or it may result in personal injury_ If you believe the engine is running too fast or too slow, take your chipper-shredder to the

nearest SEARS Service Center for repair and adjust- ment

15