Diesel engine manuals and specifications at Barrington Diesel Club

Yanmar 4BY - 6BY Manuals, Engine Specifications & Bolt Torques

 
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Yanmar 4BY - 6BY Essential Diesel Engine Bolt Tightening Torques

 

Yanmar 4BY - 6BY
Main Bearing Bolts


Stage 1 = 22 Nm
Stage 2 = 90 degrees

Yanmar 4BY - 6BY
Connecting Rod Bolts


Stage 1 = 5 Nm
Stage 2 = 20 Nm
Stage 3 = 70 degrees

Yanmar 4BY - 6BY
Cylinder Head Bolts


Step 1 = Tighten all bolts 80 Nm, 59 lb.ft
Step 2 = Loosen all bolts at least 180 degrees
Step 3 = Tighten all bolts 50 Nm, 37 lb.ft
Step 4 = Tighten an additional 90 degrees
Step 5 = Tighten an additional 90 degrees

Yanmar 4BY-6BY Diesel Engine Specs

 

Yanmar 4BY-6BY
Displacement, Arrangement,
Bore and Stroke


Displacement
4BY150, 150Z,4BY180 and 180Z: 1.995 liter
6BY220, 220Z, 6BY260 and 260Z: 2.993 liter

Arrangement
4BY150, 150Z, 4BY180 and 180Z:
4 cylinder in line
Turbocharged

6BY220, 220Z, 6BY260 and 260Z:
6 cylinder in line
Turbocharged

Bore
4BY150, 150Z, 4BY180 and 180Z: 84 mm
6BY220, 220Z, 6BY260 and 260Z: 84 mm

Stroke
4BY150, 150Z, 4BY180 and 180Z: 90 mm

6BY220, 220Z, 6BY260 and 260Z: 90 mm

Yanmar 4BY-6BY
Power


Power
4BY150 and 150Z: 110 kW, 150 hp @ 4000 rpm
4BY180 and 180Z: 132 kW, 180 hp @ 4000 rpm
6BY220 and 220Z: 162 kW, 220 hp @ 4000 rpm
6BY260 and 260Z: 191 kW, 260 hp @ 4000 rpm

Yanmar 4BY-6BY
Weight and Dimensions


Weight
4BY150, 150Z, 4BY180 and 180Z
approx:
Dry: 250 Kg
Wet: 270 Kg

6BY220, 220Z, 6BY260 and 260Z
Dry: 310 Kg
Wet: 340 Kg

Dimensions

approx:
4BY150, 150Z, 4BY180 and 180Z
Length = 861 mm
Width = 670 mm
Height = 721 mm


6BY220, 220Z, 6BY260 and 260Z
Length = 1001 mm
Width = 670 mm
Height = 721 mm


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