Carburetor Adjustments; Troubleshooting Suggestions; Basic Carburetor Settings; Idle Speed Adjustment/Acceleration Check - Craftsman BRUSHWACKER 358.798260-32cc Operator's Manual

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, ; : ,, ........ i -_:---:- follow the instructions. The basic carburetor settings _
[ AkWARNING ........ / are provided in the event they are required.
] Make_adjustmentswi'thtbedriveshaft_,:/ '_....... Turn the Low Speed Mixture Screw and the:High"
ing supported to prevent the mane or trtmmer nne. " .... -
.... I. .... . . .... ,.., ......... ,_ .._.._,,^_._;[ Speed Mixture Screw clockwtse untd they stop.
itromcomactmganyoojoet.rtotometomwzmyuurnmm,[ t3_, ,.,m t,,_, th .... _,,,_ until thin, are tieht as
]do not use theoptional shoulder strap for support. [ damage to'theneedle+seatscan occur, v" *"
_IbWAIII_ING b. Turn the Low Speed Mixture and High Speed Mix-
' ture Sct:ews one full turn counterclockwise.
Keep others away when making carburetor
• :: c. Follow instructions "a. Preparation,' through "f.
adjustments. High Speed Mixture Adjustment.,
"_kWARNING
Serious injury to the operator and others can occurifthe
carburetor is not properly adjusted.:
• Poor engine performance can be a result of other
causes such as dirty air: filter, carbon build-up
on muffler outlets, etc. See "Trouble Shooting
Chart" before proceeding' with carburetor ...... :
:adjustments. ::
$ The carburetor has been carefully adjusted at the *:+
factory. However, the operator must be sure that
• : adjustments are made when any of the'conditions
occur as mentioned in "Trouble Shooting Sugges-
tions" below.
• Very small adjustments can affect engine perfor-
mance. It is important to turn the screw a very small
amount _per adjustment and test performance before
making further adjustments. Each adjustment should
be no more than the width oflhe slot in the adjusting
screws.
• This is a complicated task. It is important to follow
instructions in sequence as indicated.
1. TROUBLE SHOOTING SUGGESTIONS
-- Engine will not continue to run at idle position.
See "b" Idle Speed Adjustment" and "e. Low
Speed Mixture Adjustment:'
_ Blade or Trimmer Head continues to spin when
the engine idles. See"b. Idle Speed Adjustment"
and "d. Deceleration Check:'
-- Engine dies or hesitates when it should accelerate.
See "c. Acceleration Check"
-- Ia3ss ofcutting power which cannot be corrected
by cleaning the air f'dter. See "f. High Speed Mix-
ture Adjustment"
-- Engine does not return to idle from full throttle
within 2 seconds, See "d, Deceleration Check"
--Engine will not run. See "Trouble Shooting
Chart" Then, if'the carburetor requires adjust-.
ment, begin with"2. Basic Carburetor Settings:'
&WAaSISG ......I
The Blade or trimmer line will be spinning-dii-l:irig
most of this procedure. Wearyour protective equipment
.__d°bse_e all safety instru_ction.s. .....
-+2.BMIIC CARB_TOR |l_Oll
NOTE: In most cases, your engine can be made to
run properly with minor carburetor adjusunents.
l_fer to "Trouble Shooting Suggestions" in the left
column for the condition you
are experiencing
and
a. PREPARATION
i.) Use a fresh fuel mix. See "Fueling Your Engine:' +
2. iMake sure line extends tOthe length allowed by line
limiter to provide'correct load on engine.
3.)Start the engine. Cut grass for 3 minutes to warm
engine. The engine must be at operating temper-
ature before carbt_retor adjustments can be per-
formed correctly
,
4. )Stop engine and remove air filter by pulling it out
with your fingers. Refer to "Specifications" for
location.
b. IDLE SPEED ADJTtJSTMENT
l.)Ailow engine to idle.
2.)Adjust Idle - Speed Screw until the:: engine
continues to run •without stalling and .__
without the trimmer head moving.
-- Turnsc-_ clockwise to increase engine speed +
if the engine stalls or dies.
-- Turn screw counterclockwise to slow engine
down and/or to keep blade or trimmer head
from turning.
3.)Follow instructions]n "c. Acceleration Check'"
and "d. Deceleration Check"
4.)N 9 furthei" adjustments are necessary if the
trimmer head does not turn at idle speed and
L if performance is satisfactory.
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Recheck idle speed after each adjustment. The blade or
trimmer head must not turn at idle speed to avoid serious
injury to the operator and others.
€. ACCELERATION CHECK
i.)Allow engine to idle.
2,)$qu©cz¢ Trisger fully
a. If performance hsatisfactory, proceed to "d.
Deceleration Check."
b. If the engine does not accelerate smoothly,
tum_e _LowSpeed MixtureScrew counter-
clockwise a small amount (no more, thanthe
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.
<) Follow instructions in "d. Deceleration Check .'"