6N21A | Propulsion Engine <MEDIUM - SPEED> | Marine Commercial

Depending on the specifications or options that have been chosen, your model may differ slightly from the one in the photograph.

Engine model		6N21A-DV	6N21A-UV	6N21A-SV	6N21A-EV
Number of cylinders		6	6	6	6
Cylinder bore × strokemm		210 × 290	210 × 290	210 × 290	210 × 290
Continuous rated outputkW(PS)		662（900）	736（1000）	883（1200）	956（1300）
Rated engine speedmin^-1(rpm)		800	800	850	850
Engine dry masskg		8000	8000	8000	8000

Standard reverse-reduction gear	Offset	Y-850	YX-1000	YX-1000	YX-1000
Standard reverse-reduction gear	co-axial	YC-850	YX-1000C	YX-1000C	YX-1000C
Reduction gear ratios (ahead)	Offset	1.84, 2.07, 2.35, 2.68	2.03, 2.36, 2.78, 3.32
Reduction gear ratios (ahead)	co-axial	1.84, 2.07, 2.35, 2.68, 3.09	2.03, 2.36, 2.78, 3.32
Reverse-reduction gear masskg	Offset	1950	2400	2400	2400
Reverse-reduction gear masskg	co-axial	2400	2550	2550	2550
Total mass with reverse-reduction gearkg	Offset	9950	10400	10400	10400
Total mass with reverse-reduction gearkg	co-axial	10400	10550	10550	10550

The engine dry weight may differ depending upon the specifications and attached accessories. The elastic coupling weight is included in the dry weight.