Husqvarna 340, 345, 346XP,350, 351, 353 manual Piston and cylinder - refitting 346XP, 350, 351

Repair instructions

Piston and cylinder – refitting 346XP, 350, 351, 353

1

Lubricate the little end bearing with two-stroke oil and insert it in the connecting rod.

2

Fit the piston with the arrow pointing towards the exhaust port. Push in the gudgeon pin and fit the circlips. If replacing the cylinder, fit the decompres- sion valve, tightening to a torque of 12–14 Nm.

3

Fit the inlet manifold 503 86 63-01 to the cylinder. Check that the impulse tube is correctly seated in the impulse channel.

NOTE!

It is very important that there are no leaks in the inlet system, otherwise the engine may seize.

4

Press the insulating plate 503 86 62-01 onto the cylinder. Check that the impulse tube connected to the insulating plate is seated correctly in the inlet manifold and lock the clamp over the manifold.

5

Lubricate the piston ring and piston with two-stroke oil.

6

Fit a new cylinder base gasket. Compress the piston ring with tool 502 50 70-01 and lower the cylinder over it carefully.

7

1

	4
3	2

Fit the cylinder bolts, tightening them in diagonal pairs to a torque of 8–10 Nm.

English – 43