Piston
Piston Size/
Measuring Point*
Top Ring
2nd Ring
End Gap (Installed)
Top Ring
2nd Ring
Oil Ring
Side Clearance
Top Ring
2nd Ring
Oil Ring
' /A
B
Oil Ring
with expander
Model
XZ550
801 0 1 8mm (3.1518:8E in)/
*
11 mm (0.43 in)
(From bottom line of piston skirt)
Piston Clearance
0.050 -- 0.070 mm (0.0020 - 0.0028 in)
Oversize
1st
80.25 mm (3.159 in)
2nd
80.50 mm (3.169 in)
3rd
80.75 mm (3.179 in)
4th
81.00mm (3.189in)
Piston Ring
Sectional Sketch
Barrel
B = 1.21:81mm (0.04718M in)
T = 3.3 ± 0.1 mm (0.130 ± 0.0039 in)
Taper
B = 1.5=8:81mm (0.05910 in)
T = 3.6 ± 0.1 mm (0.142 ± 0.0039 in)
B = 2.81;81mm (0.110:,V og in)
T = 3.4 ± 0.2 mm (0.134 ± 0.0079 in)
0.3 0.5 mm (0.012 - 0.020 in)
0.3 0.5 mm (0.012 0.020 in)
0.3 0.9 mm (0.012 - 0.035 in)
0.03 0.07 mm (0.0012 0.0028 in)
0.02 - 0.06 mm (0.0008 - 0.0024 in)
0 mm (0 in)
Connecting Rod
Oil Clearance
Color Code (Corresponding Size)
0.035 0.054 mm (0.0014 0.0021 in)
1. Blue
2. Black 3. Brown 4. Green 5. Yellow
(1.51003) (1.51823) (1.51n (1.51 .85) (1.51,81)