STEERING-WHEEL CLUTCH LEVER SETTING
Whereas the IAME clutch is equipped with a system to make the drag more
progressive, needs a clutch lever stroke little bit longer to disengage completely.
To the proper lever setting, we therefore recommend that while the lever is fully
pulled all the clutch is actually disengaged (rotation free by hand of disc thrust
plate).
CILYNDER / PISTON MATCHING
The piston replacement must take place within specific intervals, measured
through used mixture liters and it changes depending of the engine use, if for
competitive use (so to reach the better performance) or not competitive. IAME
suggests to replace the piston during the competitive use any 30lt, or before
whenever the clearance between piston and cylinder exceeds 0.10mm.
For NOT competitive use the replacement must take place any 60lt~ of mixture or
whenever the clearance between piston and cylinder exceeds 0.12mm.
The prescribed clearance between cylinder and new piston, is 0.07÷0.08mm.
The effective piston diameter has to be verified at 18mm from the base,
perpendicularly to the piston pin.
The measure marked on the piston top is the effective one of the piston.
Moreover, the clearance between the piston ring tips (installed in the cylinder)
must be between 0.40÷0.45 mm.
The clearance can be checked with a feeler gauge, by inserting the ring in the
cylinder.
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