Piston.and.cylinder - Husqvarna 570 XP/G Workshop Manual

Piston.and.Cylinder

Dismantling
1. Dismantle the following parts:
• Cylinder cover.
• Spark plug.
• Carburettor. See page 32.
• Muffler. See page 15.
2. Unscrew the anti-vibration spring (C) from the
cylinder. See fig. 1.
3. Unscrew the cylinder's four bolts (A). See fig. 1.
4. Carefully lift up the cylinder.
NOTE!.
Exercise.care.so.that.dirt.and.foreign.partic-
les.do.not.get.into.the.crankcase.
5. Cover the crankcase opening immediately with a
sheet of paper or a cloth. See fig. 2.
6. Remove one of the piston's circlips, press out the
gudgeon pin, and remove the piston. See fig. 2.
7. Remove the needle bearing from the connecting
rod's little-end.
8. Unscrew the decompression valve (B). See fig. 1.
9. Disconnect impuls hose (A) and unscrew the intake
manifold. See fig. 3 and fig. 4.
Cleaning.and.inspection
Clean all parts, scrape off all the remains of any gasket
material and scrape off carbon deposits from the following
surfaces:
1. The piston crown.
2. Top of the cylinder bore (inside).
3. The cylinder exhaust port.
4. The decompression valve.
PISTON..and..CYLINDER
A
Fig. 1
Fig. 2
A
Fig. 3
Bx3
Fig. 4
B
C
English – 45