General failures’ analysis
63,4 cm³ chainsaws
Tightening torque cylinder-screws
1,2 Kgm (106,20 in lb) + Loctite 243
Warning: during assembly
make sure the circlip has
the feet pointing up
Warning:
The arrow on the top of the
cylinder points towards the
exhaust port.
b) Cylinder and piston inspection
• Verify the diamond scoring on piston and the nickel-lining on cylinder. Replace if necessary
• Verify the piston rings wear using feeler gauge (gap max 1,0 mm)
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