Husqvarna SM 610 2006 Workshop Manual page 21

T R O U B L E S H O O T IN G
T ro u b le
E n g in e cu ts o u t easily
E n g in e n o is y
P isto n n o ise
C ran ks h aft n o is e
C lu tc h n o ise
G earb o x n o ise
R ear tran sm issio n c h ain n o ise
C lu tc h slip
3
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C au se
1. S park plug dirty
2. E lectronic control unit faulty
3. C arbu reto r jets blocked
4. Idling low
1. E xcessive play betw e en c ylind er liner and pisto n
2. P iston rings or piston rings seats w o rn
3. E xcessive carbon la yers inside the com bustion cham -
ber or o n the piston top
4. W orn rocker a rm
5. E xcessive valve pla y
6. V alve springs w e ak or seized
7. C am chain w o rn
1. M ain bearings w o rn
2. H igh radial an d axial pla y at co n-rod big e nd
3. C rankshaft ge ar dam age d
4. C rankshaft nut loose
1. D iscs w orn
2. E xcessive free pla y betw e en clutch drum and driving
discs
1. G ea rs w orn
2. G ea r splines w o rn
1. C hain stretche d or badly adjusted
2. E ngine sprocket and rea r w he e l sprocket w orn
1. Insufficient clutch adjuster free pla y
2. C lutch springs w e ak
3. C lutch discs w orn
R em e d y
C lean
R eplace
C lean
A djust
R eplace
R eplace
C lean
R eplace
A djust
R eplace
R eplace
R eplace
R eplace
R eplace
T ighten
R eplace
R eplace
R eplace
R eplace
R eplace or adjus t
R eplace
A djust
R eplace
R eplace