Husqvarna K1270 II Workshop Manual page 48

on page 12 . There is also a sealing plug that replaces
the decompression valve.
Use a pressure tester or equivalent for the test, refer to
Servicing tools overview on page 12 .
1. Turn the crankshaft until the exhaust port is fully
open. The piston must be at its bottom point.
2. Put the sealing plug in the space for the
decompression valve.
3. At the exhaust port, attach the exhaust port seal on
the cylinder at the position for the muffler.
4. Seal the clutch lubrication channel with tape.
5. At the inlet port, attach the cylinder seal and connect
the pressure tester.
6. With the pressure tester, increase the pressure to
11.6 psi/0.8 bar. The pressure decreases. If the
pressure decreases more than down to 8.7/psi/0.6
bar after 30 seconds, there is a leakage.
7. If there is a leakage, apply a solution of soap and
water or use a leakage spray to find it.
a) Examine the seals on the crankshaft.
b) Examine around the gaskets where the
crankcase halves are bonded and at the bottom
of the cylinder.
c) Look for cracks on the crankcase.
48 - Repair and servicing
6.12.2 To remove the crankcase seal
To replace the crankcase seal rings, use a Husqvarna
puller and an assembly punch. Refer to
overview on page 10 .
1. Push down the puller (A) and tighten the outer
thread of the puller in the sealing ring with a spanner
(B).
B
2. Turn the T-handle of the tool to pull up the
crankcase seal.
3. Remove the crankcase seal in the same procedure
on the flywheel side.
6.12.3 To assemble the crankcase seal
1. On the clutch side, lubricate the axle at the taper for
the clutch drum (A).
A
2. Push down the sealing ring past the taper (B).
3. Hit the sealing ring into position with the assembly
punch (C).
Servicing tools
A
C
B
1273 - 001 - 04.11.2019