Husqvarna 565 Workshop Manual page 45

Check the following:
1. That the cylinder's surface coating is not worn.
Especially in the upper end of the cylinder.
2. That the cylinder is free of score marks. See figure 4.
3. That the piston is free of score marks. Minor
scratches can be polished off with fine emery paper.
4. That the piston ring is not burnt into its groove.
5. Measure the wear on the piston ring by placing it the
cylinder and measuring the gap. See figure 5. The
clearance must not exceed 1 mm.
6. That the needle bearing is undamaged.
7. That the intake manifold and it's rubber seals are
undamaged. See figure 6.
Fig. 4
Fig. 5
Fig. 6
Piston and cylinder
English - 45