Jonsered CS 2240 - Manual (Page 45)

46 – English
Repair instructions
Check the following:
• The surface coating of the cylinder is not worn
through, especially in the upper part of the
cylinder.
• The cylinder is free from score marks and
areas of wear.
• The piston is free from score marks. Small
scratches can be polished out with fine emery
paper.
• The piston ring is freely moving in its groove.
(see figure 57)
• Measure piston ring wear. This should not
exceed 1 mm (see figure 58). Use the piston to
push the piston ring for correct alignment.
• The needle roller bearing is undamaged.
• The intake manifold is undamaged.
• That the air hoses and impulse hose are unda-
maged.
• Pressure test the decompression valve.
Fig 57
Fig 58