Sri Lanka Railways M4
The Sri Lanka Railways M4 is a class of diesel-electric locomotive manufactured in Canada by Montreal Locomotive Works. Fourteen of the manufacturers' model MX-620 were imported in 1975. This was the longest locomotive in the Sri Lanka Railways previously. All units are still operational. On regular operation they are not used beyond Polgahawela on the main line, and are not used on the hill country section. They used to travel on the full main line regularly until the previous decade. They are painted in a livery of dark blue, light blue, silver with yellow striping; although No. 752 Point Pedro was painted in a special ICE (Intercity Express) livery. Fleet

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M04
MLW locomotives
Co-Co locomotives
Railway locomotives introduced in 1975
5 ft 6 in gauge locomotives

this train stopped travelling in the hillcountry in the early years . some say the class m4 locomotives didn't travelled in the hill country due to track damaging or due to the size of the train . but the class m4 756" laxapana " came to kandy hauling the kandy mathara train in 2023 . the train was attached to a class m because the electronic running shed at maradana, didn't have a train to haul it from colombo to kandy . then the next day , another class m4 locomotive arrived to kandy with the kandy-mathara train . it was the class m4 750 " isurumuni " . the m4 756 hauled the kandy to mathara train with a class m5 locomotive attached infront of the m4 .