Benelli TNT125 - Check

●Remove the piston ring.
○Check the piston, piston pin and piston ring.
Note:
Do not break or damage the piston ring.
○
Clear the carbon deposits inside the piston ring
groove.
Check
●Install the piston ring.
○
Measure the clearance between piston ring and piston
ring groove.
○Allowable limit: top ring: 0.09mm.
Second ring: 0.09mm.
●
Remove the piston ring and install the piston rings at
the bottom of cylinder.
Note:
Press the piston ring in the cylinder by using the
piston head.
○Measure the piston ring joint clearance
○Allowable limit: First ring: 0.5mm
Second ring: 0.8mm.
●Measure the inner diameter of piston pin hole.
○Allowable limit: 14.04mm.
Piston
Test gauge
Push
Piston ring
Test gauge
Piston ring
Test gauge
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