Husqvarna SM 610 2006 Workshop Manual page 95

E N G IN E O V E R H A U L IN G
C a rb u re to r a d ju stm e n t
A djust th e ca rbure tor w ith w a rm e ngine an d w ith th e th ro ttle in clo se d p osi-
tion .
W ork a s fo llo w s:
- T u rn slow ru nning a dju sting screw (1) o n the left s id e o f th e b ike u n til the
en gin e is tu rnin g o ver at fairly high rp m (tu rn the scre w clo ck w ise to in crea se
th e rp m , an d an ticlockw ise to d ecrease the rpm ).
- T u rn a d ju stin g screw (2) clockw ise u ntil the fu lly c lo se d p o sitio n is re ach e d
th en tu rn b a ck 1,5 tu rns.
- pro g re ssive ly lo ose n adjustin g screw (1 ) to ob tain th e slo w ru n n in g re -
qu ire d.
N O T E
A n in corre ct idle je t size co uld ca use trou ble s of startin g o f th e e n g in e.
In th is ca se:
- if tu rning the sc re w (2 ), no e ngine spe ed chan ge is o b ta in e d , a sm a lle r id le
je t h a s to be installe d;
- if th e en gin e sto p s w he n th e scre w (2) is no t yet c o m p le te ly tu rn e d , a larg er
id le jet h as to b e insta lle d.
A fte r th e id le jet rep lace m ent, rep e at th e C arb u re to r
ad ju stm e nt .
B e sid es, if w ith a co m p lete ly throttle g rip ope n, po o r a cce le ra tio n o r slo w
pickup o f the e ng in e o r soo ty sp a rk p lug a re o btain ed , it is n e ce ssa ry to
che ck th e w ea r o f the se carbu reto r parts: th ro ttle valve , m e te rin g p in an d
nee dle je t (m ixtu re en richm en t). S e e the ne xt pag e s.
Id le a d ju s tm en t
A djust th e ca rbure tor w ith w a rm e ngine an d w ith th e th ro ttle co n tro l in clo sed
po sitio n.
P roce ed a s fo llow s:
- T u rn slow ru nning a dju sting screw (1) o n the left s id e o f th e b ike , n e a r th e
fu el cock (tu rn th e screw clockw is e to incre ase th e rp m , a n d a n ticlo ckw ise to
de crea se the rp m ).
C a rb u re to r c h e ck in g
1. In spe ct:
- C arb u reto r b o d y
C o ntam in atio n: C le an
2. In spe ct:
- M a in jet (1)
- P ilo t jet (2)
- N ee dle je t (1 2 )
- P ilo t screw (7 )
- S ta rte r je t (3 )
- M a in a ir jet (4)
- P ilo t a ir je t (8 )
D a m a ge : R e p lace
C o ntam in atio n: C le an
N O T E :
- U se a p etro leu m ba sed solve nt for clea nin g. B low o u t a ll p a ssa g e s a nd jets
w ith co m p re sse d air.
- N ever use a w ire .
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