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 tart o r starts w ith
d iffic u lty
In ad e q u a te co m p ressio n
N o o r w eak sp ark
F u el n o t re ach in g carb u reto r
C arb u re to r flo o d in g
W o rn o u t clu tc h sw itch o n th e
h an d leb ar
2
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C au se
1. P iston seizure
2. C on-rod sm all or big end seized
3. P iston rings w orn
4. C ylinder w orn
5. Lo w torque c ylinder head nu ts
6. H ead gasket b low ing
7. S park plug loo se
8. Incorrect valve pla y
9. V alve springs w e ak or seized
10. V alves seized
11. Incorrect dec om pressor adjustm ent
1. S park plug fau lty
2. S park plug dirty or w et
3. S park plug ga p too large
4. Ignition coil faulty
5. H .T . leads da m aged or sho rt circuiting
6. E lectronic device faulty
7. R .H . s w itch fa ulty
1. F uel tank cap breathe r blocked
2. F uel cock blocked
3. F uel feed hos e blocked
4. C arbu reto r fue l filter dirty
5. W orn out float valve or w o rn out floats
6. R ocker blocking float valve
1. H igh fuel level in float bow ls
2. W orn out float valve or w o rn out floats in open po sition
C lutch sw itch cable connected incorrectly or sho rt circuit
R em e d y
R eplace
R eplace
R eplace
R eplace
T ighten
R eplace
T ighten
A djust
R eplace
R eplace
A djust
R eplace
C lean or d ry
A djust
R eplace
C heck
R eplace
R eplace
C lean
C lean
C lean
C lean
R eplace
F ree
A djust
R eplace or fre e
C onnect correctly or replace