Craftsman 358.797180 Operations Instructions download pdf (Page 21)

€.ACCELERA_ONCHECK e.LOWSPEEDMIXTURE ADJUSTMENT

1.)Allowenginetoidle.

2.)SqueezeTriggerfully

a. If perfornmnce is satisfactory, proceed to "d.

Deceleration Check:'

b. If the engine does not accelerate smoothly,

turn the Low Speed Mixture Screw (Figure 26)

counterclockwise a small amount (no more

than the width of the slot in the adjusting

screw).

3.)Repeat step "2.)" until smooth acceleration is

obtained.

NOTE: It may be necessary to repeat ,b. Idle

Speed Adjustment" through "c. Acceleration

Check;' to obtain correct adjustments.

4.)Follow instructions in "d. Deceleration Check-"

d. DECELERA_ON 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.)Release 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 '_;.)"

b. ffthe engine slowly or erratically returns to

idle or idles erratkall-y, repeat"b. Idle Speed

Adjustment" or continue through Low Speed

Mixture and High Speed Mixture Adjustments

to obtain proper deceleration.

4.)Recheck idle speed.

HIGHSPEEDMIXTU_

_d)ju_ SCREWLOWSPFXDMIXTURE

ADJU_ SCREW

IDLE SPEED MR

ADJUSTMENT FILTER

SCREW C(IAT_

l.)Allow engine to idle.

2.)TUrn the Low Speed Mixture Screw (Figure 34)

slowly clockwise until the speed starts to drop,

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.

4.)Set the Low Speed Mixture Screw at the mid-

point between the two positions.

5.) Follow isntructions in "c. Acceleration Check"

and "d. Deceleration Check."

L HIGH SPEED MIXTURE ADJUSTMENT

ICAUTION:IDo 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 off the ground and will not make contact

with any object,

2.)Allow engine to idle, then squeeze Throttle Trig-

ger fully.

NOTE: Perform steps "3.)" through "5.),"

at full throttle.

3,)Turn High Speed Mixture Screw (Figure 34) very

slowly clockwise until engine speed is reduced.

4.) Turn High Speed Mixture Screw very slowly

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."

[CAUTION:] If the engine does not operate

according to these in_ructions 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 '_dr Filter" in the

Maintenance Section for instructions.

[€..MJTION:] Fit air _ter into the corr,ers of the

housing to keep dirt from entering the engine and

causing engine damage.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 27 28

Comments to this Manuals

No comments

Craftsman 358.797180 Operations Instructions Page 21

Comments to this Manuals

Related products and manuals for Power tools Craftsman 358.797180