Piston Rings - APRILIA MSS Mana GT ABS Service Station Manual

Characteristics

Piston rings

* Fit piston rings «2» and «3» with the mark «TOP» facing up.
** Position the opening in the rings as shown in this figure.
*** Value «A» of the sealing ring inside the cylinder.
FITTING CLEARANCE PISTON RINGS- SEALING RINGS
DENOMINATION
1st Compression ring (mm)
2nd Compression ring (mm)
Oil scraper rings (mm)
Maximum clearance after use: B = 0.10 mm
Crankcase - crankshaft - connecting rod
Crankshaft bearing diameter.
Measure the diameters as indicated in the figure by positions A and B, on both x and y axes.
CHAR - 22
CLEARANCE WHEN MAXIMUM CLEARANCE
FITTING (A)
0.15 ÷ 0.35
0.25 ÷ 0.50
0.25 ÷ 0.50
MSS Mana GT ABS
STANDARD COUPLING
AFTER USE (A) CLEARANCE (B)
0.50
0.65
0.65
0.01 ÷ 0.06
0.02 ÷ 0.07
0.01 ÷ 0.06