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L oumm_tt
Anjl__
• Tht_is a co_
task. It is im_t
to follow
instructions in sequence as indicated.
AWARNING
Make carburetor
adjt_s'_anents wi_
the drive shaft
housing supported to prevent the trimmer _
from
contacting
any object, Hold the tool with your hand;
do not use the _
shoulder strap for support.
Keep
others
_idjustments.
&wAumo
away
when
making
carburetor
"
• l_r
engine performance can be a result of other
causes
such as dirty air"f'dter, carbon build-up
on muffler
outlets, etc. See "Trouble
Shooting
Chart"
before
proceeding
with
carburetor
• The carburetor has been carefully _
at fl_e
factory. However, the operator must be _
that
adjustnients
are made when any of the conditions
eccur as mentioned in "Troulde Sheeting Sugges-
tions"
below.
• Y_ry small adjustments can affect engine perf6r-
mauce. It is important to turn the screw a verysmall
amount per.adjustmefit
and test performan.c_e before
makingguttheradjustments.
Each
adjustment
should
be no more than the width of the slot in the adjusting
SCOWS.
L TROUBLE
SHOOTING
SUGGESTIONS
°
-- Engine will not continue to run at idle posltiolt.
See "bY Idle Speed Adjustment"
and "e. Low
Speed Mixture Adjustment"
-- TrimmerHead
centinuestospin
whentheengine
idles, See "ix Idle Speed Adjustment" and "d.
Deceleration
Check:
-- Engine diesorhesiUttes when itshouldaccele-a_
See "c. Acceleration Cheek."
-- Lossof cuttingpowerwhichcannotbeco_
_ d,mi_the_r, lt_.See"f. m__mix-
ture AdjmtmentY
• -- Engine does not return to idle from full throttle
within 2 semmds. See "d. Decelexalion
Check:
--Engine wal not run. See "Trouble Shoot_
Onwt." _,
iftbecarburetorrequlresadjt_t-
me_ _with'2.
_k
Carburetor senin_ "
'
.
dLWARNIMG
The trimmer hne will be spinning during most of'this
procedur_ Wear your pmtectiveequipment
and observe
2. BASIC CARBImETOR
SEtTInGS
NOTE: In most cases, your _gine
can be made to
mn Wot_ly
with minor
carb_r
adj_ent_.
Refer to "_muble Shooting Suggestions" in the left
column for the condition you axe expe_ienci_
and
follow the L_tmcti0ns.
The basic carburetor settings
areprovided i ncase_y a_ required.
a. Tam the Low Speed Mixture Screwand the High
Speed Mixture Screm clockwise until they stop.
Do nottarn thescrews umil they are aght as danutge
to the needle seats can occur.
b. Tarathe Low Speed _
and High SpeedMix-
ture Screws one full mrn countoreloel_se.
c. Fol!ow instructions "a. Preparation" through "f.
High Speed,Mixture Adj_nt:'
3.PR0CEDURE
a. PREPARATION
•
Lt
*
"
v'_
l.)Useafreshfuelnux.
See Fueling Y ourE_.
2.)Make sum the tine extends tothe length atlowed
by the line limiter to provide correct load on
engine.
3.)Stm the engir,e. Cut gross for3 minutes to warm
engine. The engine must be at operaang temper-
ature before carburetor adjustraems w.n be per-
formedcorrectly
4,)Stop engine and rerno_ air filter by pulling it out/
wifl_your fingers. Refer to "Specifieatiom"
for, ....
location,
.::
_ mLZSn_.DJU_
L)Allow engine to idle:
2.)Adjust Idle Speed Screw
until the
engine
continues to run without stalling and Without
the trimmer head moving.
-- Turnscrewclockwiservincrenseenginespeed
if the engine stalls or dies.
-- Turns¢.mwcountemloctm_ise to slow engine
down and/or to keep trimmer head from
turm'ng.
3.)Follow instructions in "c. Acceleration Check"
and "d. Deceleration Check:'
4.)No further adjustments
are n¢cessa_
if the
trimmer head does not turn at idlespeed and
If perfo_
is satisfa_ry.
_kWARNING
•Recheckidle speed after eachadjustment.
"l'netrimmer
headmnst not turn atidlespeed
toavoid _riousinjury
to the operator and other.
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