Cylinder Checking And Replacement - Benelli TNT 25 Maintenance Manual

Cylinder Checking and Replacement

Disassembling Cylinder
●Remove the parts above the cylinder head and loosen the cylinder
mounting bolt [A].
●Remove the cylinder [B] vertically.
●Removing
Gasket [A]
Dowel pins [B]
Installing Cylinder
●Install the gasket [A] and dowel pin [B] on the crankcase.
★The wrinkle and unevenness are not allowed to appear on the gasket
★Dislocation is not allowed; apply a little oil to the inside of
cylinder and then embed the piston into it. Shake the cylinder
horizontally and vertically so that the piston is fully embedded into
the cylinder. And then press down it until it is in place. Then install
the cylinder gasket.
●Make sure to apply engine oil onto the inner wall of cylinder
evenly.
●Be careful to put the piston ring into the cylinder. The assembly
shall be smooth; if the stagnation occurs, do not vigorously install it
and check whether the piston ring is dislocated.
Note
Do not damage the piston ring. Crankshaft can rotate flexibly
after the piston ring is installed
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