English - 41
Piston and cylinder
2. Place the piston with the arrow facing the exhaust
port. Slide the gudgeon pin bearing (D) in and fit the
circlips (C). See figure 3.
3. Compress the piston ring with a piston ring squeeze
tool (589 55 57-01). Insert the tool into the cylinder
and carefully fit the cylinder on the piston. See Fig-
ure 9a. Remove the tool by pulling down and back.
See Figure 9b.
4. Attach the cylinder to the crankcase. See Figure 1.
Tighten the screws.
5. Attach the carburettor and the manifold. Make sure
to use the correct torque. See chapter 4 Service
data.
6. Attach the tank unit and front handle. Make sure to
use the correct torque. See chapter 4 Service data.
7. Attach the throttle wire to the carburettor.
8. Attach the fuel hose and return hose.
9. Attach the:
- Oil system
- Anti-vibration element
- Muffler
- Clutch
- Clutch cover
- Flywheel
- Ignition module
- Starter unit and air guide plate
- Air filter and air filter holder
- Spark plug
- Cylinder cover
18.5 Leakage testing
1. Remove the cylinder cover.
2. Remove the air filter, the air filter holder and the
carburettor. See chapter 15.4 Dismantling the
carburettor.
3. Attach the pressure testing covers (A, B) and
spacing sleeves (D). Tighten the pressure testing
cover (B) with the nuts. See Figure 10.
4. Loosen the screws on the muffler and press the
rubber sheet 502 54 11-02 (C) between the muffler
and cylinder. Tighten the two muffler screws. See
Figure.
5. Remove the spark plug and screw the pressure test
connection 503 84 40-02 in its place. Connect the
tool 531 03 06-23 to the nipple. See Figure 10.
6. Pump the pressure up to 80 kPa (0.8 bar). Wait 30
seconds. The pressure should not be less than 60
kPa (0.6 bar).
7. Remove the cover plates from the muffler and
manifold, tighten the bolts to the specified torque.
Remove the pressure test connection 503 84 40-02
and refit the spark plug.
WARNING!
After pressure testing the cylinder, check
that the inlet manifold is seated correctly,
otherwise the saw may be damaged.
Fig. 10
A
C
B
D
D
Fig. 9a
Fig. 9b