Class S7 DMUs’ came to Sri Lanka after few years S6 DMUs’ were imported. DMU’s were very popular among people due to the efficient service rendered by them. DMUs’ were mainly used for sub-urban & office trains because of the ease to control & less expenses. These reasons motivated SLR officials to import new DMUs’. These sets were similar to S6 sets in almost every feature.
| Engine Class | S7 |
| Built Country | Japan |
| Builder | Hitachi |
| Imported Year | 1977 |
| Power Type | Diesel Hydraulic |
| Engine Type | Cummins KTA 2300L |
| Power Output | 1020hp – 2100RPM |
| Maximum Speed | 88 km/h |
| Axel Arrangement | B-B |
| Weight | 54 T |
| Livery | Green & Yellow, Green & Brown |
| Total Imported | 10 Power Sets 757-766 |
Update in – progress
Cover Photo: https://www.flickr.com/photos/13742148@N03/27187696953
