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HISTORY OF YANMAR PLEASURE BOAT ENGINES
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Date of Production Start
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Engine Model
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Max. output (DIN6270B) hp/rpm (SHP)
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No. of Cyl.- Bore x Stroke mm
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Displace-ment
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Dry Weight kgs
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Remarks
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1969
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PMX 6
PMX 8
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5.5/2300
8.5/2100
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1-75 x 80
1-85 x 95
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0.353
0.539
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146
188
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Horizontal type, direct sea-water cooling.
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1971
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YSE 8
YSE 12
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8.0/3200
12.0/3000
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1-75 x 75
1-85 x 90
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0.331
0.510
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131
169
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Horizontal type, direct sea-water cooling.
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1974
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SVE 8
SVE 12
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8.0/3200
12.0/3000
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1-75 x 75
12.0 x 90
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0.331
0.510
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140
170
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Vertical type, direct sea-water cooling.
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2QM20
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22.0/2800
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2-88 x 90
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1.094
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218
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First QM series
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1975
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2QM20H (F)
3QM30H (F)
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22.0/2800
33.0/2800
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2-88 x 90
3-88 x 90
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1.094
1.642
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190
260
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- Developed multi-disc clutch type marine gear KBW series (QMH-series)
- 3QM30H released.
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1976
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YSB 8
YSB 12
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8.0/3200
12.0/3000
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1-75 x 75
1-85 x 90
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0.331
0.510
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111
138
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Light-weight version of YSE
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SB 8
SB 12
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8.0/3200
12.0/3000
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1-75 x 75
1-85 x 90
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0.331
0.510
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114
137
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Light-weight version of SVE
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1977
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YSM 8
YSM 12
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8.0/3200
12.0/3000
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1-75 x 75
1-85 x 90
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0.331
0.510
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102
130
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Modification of fuel injection pump. (Dickel type -> Bosch type)
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2QM15
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15.0/3000
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2-75 x 75
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0.662
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145
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Bottom of the QM range.
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1980
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1GM
2GM (F)
3GMD (F)
3HM (F)
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7.5/3600
15.0/3600
22.5/3600
30.0/3400
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1-72 x 72
2-72 x 72
3-72 x 72
3-75 x 85
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0.293
0.586
0.879
1.126
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70
100 (108)
130 (138)
158 (167)
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- High speed, Light duty type GM/HM series,
- Developed cone clutch type marine gear KM series & sail-drive SD series.
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1982
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4JM-TE
4PHE
4PH-TE
6PHE
6PH-TE
6PH-HTE
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* 50/3600
* 80/2900
* 100/2800
* 120/2900
* 145/2800
* 175/2800
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4-78 X 78
4-95 X 110
4-95 X 110
6-95 X 110
6-95 X 110
6-95 X 110
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1.490
3.119
3.119
4.678
4.678
4.678
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227
360
375
490
510
530
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Bob tail spec. series (*Flywheel output)
- Sales area: Scandinavian market only
- Sales area: Taiwan & US market only (PHM series).
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1983
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1GM10
2GM20 (F)
3GM30 (F)
3HM35 (F)
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9.0/3600
18.0/3600
27.0/3600
34.0/3400
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1-75 x 72
2-75 x 72
3-75 x 72
3-80 x 85
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0.318
0.638
0.954
1.284
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76
106 (114)
130 (138)
158 (167)
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- GM/HM Bore-up series start.
- 20% power-up of GM series & 13% power-up of 3HM.
- Developed V-drive marine gear KMV series (except HM series)
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4JH (B) E
4JH-T (B) E
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44.0/3600
55.0/3600
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4-78 x 86
4-78 x 86
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1.644
1.644
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226 (228)
232 (234)
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- 4 cylinder, Direct injection type 4JH series.
- Developed angle drive marine gear (KM4A).
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1984
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4JH-HT (B) E
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66.0/3600
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4-78 x 86
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1.644
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246 (244)
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Upper model for 4JH series
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1985
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4JH-DT (B) E
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77.0/3600
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4-78 x 86
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1.644
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246 (244)
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Highest model for 4JH series (Total: 4 models)
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1987
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4LH-TE
4LE-HTE
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105.0/3300
135.0/3300
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4-100 x 110
4-100 x 110
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3.455
3.455
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340
350
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4LH series
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1988
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4JH2 (B) E
4JH2-T (B) E
4JH2-HT (B) E
4JH2-DT (B) E
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50.0/3600
62.0/3600
75.0/3600
88.0/3600
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4-82 x 86
4-82 x 86
4-82 x 86
4-82 x 86
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1.817
1.817
1.817
1.817
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226 (228)
232 (234)
246 (244)
246 (244)
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- 4JH Bore-up series.
-Approx. 14% power-up of 4JH series.
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1989
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4LH-DTE
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165.0/3300
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4-100 x 110
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3.455
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380
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Highest model for 4LH series.
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1991
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3JH2-T (B) E
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45.0/3600
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3-82 x 86
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1.363
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192 (190)
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3JH2 series.
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4JH2-UT (B) E
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100.0/3600
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4-82 x 86
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1.817
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246 (244)
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Highest model for 4JH2 series (Total: 5 models)
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3JH2-(B) E
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36.0/3600
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3-82 x 86
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1.363
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183 (178)
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Production start Sep., '91
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6LY-UTE
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303.0/3300
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6-100 x 110
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5.184
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593
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Production start Oct., '91
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6CX-ETE
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405.0/2700
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6-110 x 125
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7.127
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990
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Production start Sep., '91
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Note 1: Eng. model
(F)/Fresh water cooling type.
(B)/Angle drive marine gear type.
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