Yanmar BY Series Service Manual page 65

ENGINE
Component
1st Groove Side Clearance
1st Groove End Gap
Engine
Piston, Rings,
2nd Groove Side Clearance
Pins
2nd Groove End Gap
3rd Groove
Engine
Cylinder Block
Oil Change
Includes Oil Filters
Volume**
* Values are for new or reconditioned cylinders.
** Capacity may vary depending on installation angle
5-10
Remarks
Bore Diameter - stage 0*
Bore Diameter - stage 1*
Permitted out-of-round of cylinder bore*
Permitted conicity of cylinder bore*
Permitted total wear tolerance piston to cylinder
Specifications
Specification
0.12 - 0.16 mm
(0.005 - 0.006 in.)
0.20 - 0.35 mm
(0.008 - 0.014 in.)
0.07 - 0.11 mm
(0.003 - 0.004 in.)
0.30 - 0.45 mm
(0.012 - 0.018 in.)
Cannot be measured
84.007 ±0.007 mm
(3.3074 ±0.0003 in.)
84.257 ±0.007 mm
(3.3172 ±0.0003 in.)
0.005 mm (0.0002 in.)
0.01 mm (0.0004 in.)
0.15 mm (0.006 in.)
4BY 8.0 L (8.5 qt)
6BY 11.0 L (11.5 qt)
BY Service Manual