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Yanmar 4BY - Page 65

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

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