Assembly - RedMax G9000 Workshop Manual

Piston and cylinder

15.1.4 Assembly

Assembly of the piston and cylinder is carried out
as follows:
NOTE! Exercise care so that dirt and foreign
particles do not get into the crankcase.
1. Lubricate the needle bearing and fit it in the
connecting rod's little-end.
2. Replace the piston with the arrow facing the
exhaust port. See fig. 8. Slide in the gudgeon pin
and fit the circlip.
3. Fit the intake manifold on the cylinder. The
clamp bolt should be upwards. See fig. 9.
4. Fit the decompression valve (D). See fig. 11.
Tighten it to 15 Nm.
5. Fit the gasket on the cylinder base. Press it up
so that it fastens on the sleeve of the cylinder.
6. Oil in the piston ring and sides of the piston.
7. Compress the piston ring, either by hand or with
tool 502 50 70-01. See fig. 10. Carefully fit on
the cylinder.
8. Guide up the cylinder base gasket with the four
bolts (C) and tighten them alternately. Tighten
them finally to 10 Nm. See fig. 11.
9. Fit the anti-vibration spring (B) on the cylinder.
See fig. 11. Tighten the bolt to 10 Nm.
10. Insert the spark plug and pressure test as
shown in the instructions on the next page.
Assemble the following parts:
• Muffler.
• Carburettor.
• Cylinder cover. See the Operator Guide.
11. If a new piston and/or cylinder is fitted the
chainsaw should be run-in for 3-4 hours with the
carburettor set at its basic settings (H=1/4 and
L=1/4 turn). See carburettor settings.
Fig. 8
Fig. 9
Fig. 10
C
Fig. 11
D
B
A
English – 43