Crankcase And Crankshaft - Husqvarna 570 Workshop Manual

This section deals with the following:
• Crankcase and crankshaft (describes how the whole
assembly is dismantled and reassembled)
• Seals (describes only replacement of seals)
• Bar bolts (describes only replacement of bar bolts)

Crankcase and crankshaft

Dismantling
1. Before the crankcase can be separated the following
parts must be dismantled:
A Chain and bar. See the Operator's Manual.
B Starter. See page 18.
C Electrical system. See page 21.
D Centrifugal clutch. See page 26.
E. Lubrication system. See page 28.
F. Carburettor. See page 32.
G. Muffler. See page 15.
H. Piston and cylinder. See page 43.
I. Tank unit. See page 40.
NOTE!
Exercise care so that dirt and foreign partic-
les do not get into the bearing.
2. Remove the carburettor space bottom by
unscrewing the four bolts. See fig. 1.
3. If necessary, remove the seal on the flywheel side.
Use tool 504 91 40-01. See page
4. Remove the six bolts on the flywheel side. See fig. 2.
5. Fit tool 502 52 49-01 as shown in fig. 3 and remove
the crankcase half on the flywheel side.
6. Remove the crankcase half on the clutch side in
the same way as item 5 above.
7. If necessary, remove the crankshaft bearing from the
crankcase.
Do as follows:
A Remove the oil filler cap.
B Heat the relevant crankcase half to 200°C.
C. Use protective gloves and press the bearing out
from the crankcase half.
!
WARNING!
The crankcase halves are hot and can
cause burn injuries. Wear protective
gloves.
CRANKCASE and CRANKSHAFT
53, fig. 14.
Fig. 1
Fig. 2
Fig. 3
Fig. 4
English – 49