Husqvarna 555 Workshop Manual page 48

8. Use pliers to remove the snap ring from the pin.
Keep your thumb adjacent to the snap ring to make
sure that the snap ring do not eject.
9. Carefully remove the snap ring (B) for the piston pin
(C). Make sure that you do not cause damage to the
groove.
10. Push out the piston pin (C) and lift off the piston.
11. Remove the needle bearing (A). Replace the needle
bearing if it is damaged or worn.
12. Remove the piston ring (D).
7.18.2 To clean the cylinder and piston
1. Clean the piston crown.
2. Clean the top of the cylinder bore.
3. Clean the cylinder exhaust port.
48 - Repair instructions
D
C
B
A
4. Clean the bottom of the cylinder and the bottom of
the crankcase. Remove all gasket particles and dirt
particles.
5. Use a screwdriver to remove dirt particles from the
cooling fins.
7.18.3 To examine the cylinder
1. Make sure that the surface layer of the cylinder is
not worn, especially in the top end of the cylinder.
2. Make sure that the cylinder does not have score
marks.
1540 - 001 -