Husqvarna SM 610 2006 Workshop Manual page 20

T R O U B L E S H O O T IN G
E N G IN E
T ro u b le
E n g in e d o n t s ta rt o r s ta rts w ith
d iffic u lty
In ad e q u a te co m p re ss io n
N o o r w ea k sp a rk
F u e l n o t re a ch in g c a rb u reto r
C arb u re to r flo o d in g
W o rn o u t c lu tc h sw itch o n th e
h a n d leb a r
2
C au se
1. P iston seizu re
2. C on -rod sm a ll o r b ig e n d se ized
3. P iston rin gs w o rn
4. C ylin der w o rn
5. L o w torque c ylin d e r h e a d n u ts
6. H ea d gaske t b lo w in g
7. S park plug lo o se
8. Incorre ct valve p la y
9. V alve sp ring s w e a k o r se ize d
10. V alves se ized
11. Inco rrect d e c o m p re sso r a d justm e n t
1. S park plug fa u lty
2. S park plug d irty o r w e t
3. S park plug g a p to o la rg e
4. Ignition coil fa u lty
5. H .T . lea ds d a m a g e d o r sh o rt circuitin g
6. E lectron ic de vice fa u lty
7. R .H . s w itch fa u lty
1. F ue l tan k ca p b re a th e r b lo cked
2. F ue l cock b lo cke d
3. F ue l fee d ho s e b lo cke d
4. C arbu reto r fu e l filte r d irty
5. W o rn out flo a t va lve o r w o rn ou t flo ats
6. R ocker b lockin g flo a t va lve
1. H igh fu el le ve l in flo a t b o w ls
2. W o rn out flo a t va lve o r w o rn ou t flo ats in o pe n p o sition
C lu tch sw itch ca b le co n n e cte d inco rrectly or sh o rt circu it
R e m e d y
R ep lace
R ep lace
R ep lace
R ep lace
T ig h te n
R ep lace
T ig h te n
A d ju st
R ep lace
R ep lace
A d ju st
R ep lace
C lea n or d ry
A d ju st
R ep lace
C he ck
R ep lace
R ep lace
C lea n
C lea n
C lea n
C lea n
R ep lace
F re e
A d ju st
R ep la ce o r fre e
C o nn ect co rrectly or re place