Assembling The Piston And Cylinder - Husqvarna 560XPG Workshop Manual

Repair Instructions
Faults and causes
Score marks on the piston (A)
1. Leakage, check not carried out.
2. Too low octane fuel.
3. Too low or incorrect oil in the fuel.
Carbon build-up (B)
1. Too much or incorrect oil in the fuel.
See Figure 63.
Piston ring breakage
1. Piston ring worn out.
2. Oversized piston ring groove.

7.46 Assembling the piston and cylinder

1. Oil the gudgeon pin bearing with two-stroke oil
and insert it into the crank rod. See figure 64.
2. Replace the piston with the arrow facing the
exhaust port, and slide in the gudgeon pin and
fit the circlips.
NOTE! Use new circlips. See figure 64, 65.
3. Oil the piston and piston ring with two-stroke oil.
4. Put a new cylinder base gasket in place. Apply
silicone (Order No. 503 26 72-01) on the gasket
as shown in figure 64b. Compress the piston
ring and carefully push the piston into the
cylinder opening.
5. Attach the cylinder. The screws must be
tightened crosswise with a tightening torque of
8-10 Nm.
NOTE!
It is very important that the intake system is
sealed. Otherwise the engine may seize up.
50
- English
A
Fig 63
Fig 64
Fig 64b
Fig 65
B