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d. DECELERATION CHECK
1.)Allow engine to idle, then squeeze Throttle Trig-
ger fully.
2:)Allow engine to run at full speed for about 1
second.
3.iRelease the Throttle Trigger to the idle position
and listen to the deceleration ofthe engine. It must
return to idle smoothly and within I to 2 seconds.
a. If performance is satisfactory,-proceed to
step "4.)"
b. If the engine slowly or erratically returns to
idle or idles erratically, repeat"b. Idle Speed
Adjustment" or continue through Low Speed
Mixture and High Speed Mixture Adjustments
4.)Set the _ Speed Mixture Screw at the mid--
point between the two positions.
_.:!: : = 5:)Follow instructions in "c. Acceleration Check"
• and "d, Deceleration Check"
f. HIGH SPEED MIXTURE ADJUSTMENT
[CAUTION:] Do not operate engine at full
throttle for prolonged periods while making high
: : : speed adjustments as damage to the engine
can occur.
1.)Support the drive shaft housing so the trimmer
line is offthe ground and will not make contact
with any object.
2.)Al!ow engine toidle, then squeeze Throttle Trig-
ger fully.
NOTE: Perform steps "3.)" through "5.),'
:at full throttle. ....... .
3.) Tum High speed, Mixture Screw veby slowly
clockwise until engine speed is reduced.
4, )'i_Jm--Hig--h-S_ed Mixiure Screw vdry _Io_iv---
counterclockwise. Stop when the engine begins
to run roughly.
5.) Turn the screw slowly the minimum amount
clockwise until the engine runs smoothly.
6.) Follow instructions in "c. Acceleration Check"
and "d, Deceleration Check:' i
!CAUTION:] If the engine does not operate
accordLng to these instructions after repeating
the adjusting steps, do not use the tool. Take
' it to your Sears Service Center.
to obtain proper deceleration.
4. )Recheck idle speed.
HIGH SPEED MIXTURE
IDLE SPEED AIR
ADJUSTMENT FILTER
SCREW COVER
I
I
I.)Allow engine to idle.
2,Turn the Low Speed Mixture Screw slowly ,I
..... Lclockwise until thespeed starts todrop. - /
Note this position.
3:)Turn the Low Speed Mixture Screw counter------
clockwise until the speed increases and then
starts to drop again. Note this position.
i1 i it II ] ]
D.. STARTER ROPE ...................................................
&t tNGra •
Never start the engine with the clutch shroud removed.
The clutch will fly apart and cause serious injury.
Ak WARNING
Do not remove the retaining tab and screw"to remove
pulley. The spring beneath the pulley is under teusion
and can fly out causing serious injury, ffany part of the
put housingassemblyisdamagedotherthantherope,
do not use the tool. Take it to your Sears Service Center.
I. Disconnect Spark Plug Wire. ,................
2. Remove the Screw and Nut in the Throttle Trigger
Housing.HotdtheThrottleTrigger away from Drivel
Shaft Housing and remove Throttle Cable from i
Trigger. Pull Cable out of Foam Grip :_
tunnel.
3, _rn_€ the fourClutch Shroud Screws_ shown in
withthesm ll wrenehprovided,
4. Separate theClutch Shroud fromthe Engine, L.
•& O Gml , [ !
Use only a hand tool to remove the clutch, Do not use any
type of motorized tool or strike the clutch inany way. Other-
wise, the clutch wiUfly apart and cause serious injury.
g. REINSTALL AIR FILTER
Be sure filter is clean. See
instructions.
"Air Filter" for
]CAUTION: ] Fit air f'dter into the corners ofthe
housing tokeep dirt from entering the engine and
causing engine damage.
I
f
H..... . L_ ' ......
REMOVESCREWS € "FLATS"
:hownwithout Drive Shaft
HousLngfor clarity.
7
SHROUD_
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