Husqvarna SM 610 2006 Workshop Manual page 82

E N G IN E O V E R H A U L IN G
8
V alve sp rin g
C h eck the fre e le n g th "L ". If this d oe s no t co rresp o nd to th e p re scrib ed lim its th en
substitute th e sp rin g s.
Interna l sp rin g : L = 1 .4 4 in . - W ea r lim it: 1.3 4 in .
E xtern al sp rin g : L = 1 .7 0 in . - W ea r lim it: 1.65 in .
If it is n e c e s s a ry to c h a n g e o n e o f th e s p rin g s th en all th e o th e r s p rin g s
s h o u ld a ls o b e c h a n g ed .
V alve spring orthogo na lity che ck.
T he m ax. obliq uity is 0.06 in for side.
In stalla tio n o f va lve s
L ubricate th e va lve g u id e s a nd va lve stem w ith en gin e oil w h en th e va lve is
installed.
Install the se a l rin g , th e sp rin gs a nd th e cup .
U se tool co d e n o . 8 0 0 0 3 9 52 1 to co m pre ss th e valve sprin gs a nd ca n insta ll ha lves
co nes.
D o n o t c o m p re s s th e va lve s p rin g s m o re th a n n e ce s sa ry. D o n o t
d a m a g e th e c ylin d er h e ad .
T ap g en tly o n th e va lve stem w ith a pla stic ha m m e r to m ake th e cotters se at.
H it s tra ig h t o n th e to p o f th e valve s te m so th a t th e valve ste m
d o e s n t g e t o u t o f tru e.