Craftsman Essential Guide for Performing Deceleration Checks on Your TNGra Brush Cutter

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 of the 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

to obtain proper deceleration. 4. )Recheck idle speed.

HIGH SPEED MIXTURE

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IDLE SPEED		AIR
ADJUSTMENT		FILTER
SCREW		COVER
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.	the fourClutch Shroud Screws_ shown in
3,	_rn_€
	withthesm ll wrenehprovided,
4.	Separate	theClutch Shroud fromthe	Engine,	L.

Use only a hand tool to remove the clutch, Do not use any

type of motorized tool• &or OstrikeGmlthe clutch in any, way. Other- [ ! wise, the clutch wiU fly apart and cause serious injury.

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 to idle, 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.

g.REINSTALL AIR FILTER

Be sure filter is clean. See "Air Filter" for instructions.

]CAUTION: ] Fit air f'dter into the corners ofthe

housing to keep dirt from entering the engine and causing engine damage.

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f

REMOVESCREWS H..... .€ L_"FLATS"'......

:hown without Drive Shaft

HousLngfor clarity.	SHROUD_
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