In 2010 a small shunting diesel engine class Ls40-4544 has joined our collection of rolling stock. According to the previous owner, the vehicle was in full working order. Unfortunately, due to other, more important tasks and lack of engine oil, we did not had the opportunity to verify these claims. This winter, a group of our volunteers decided to do a check-up and a first in years start. The efforts resulted in a success. The outer refurbishing will be continued in summer. During the works we made a disappointing discovery – an extra ballast was removed in the past making the engine underweight. In future this may influence its traction so a temporary solution has to be devised.