MMD Equipment 25S-3A3 - Manual (Page 46)

6. Periodic Inspection/Maintenance
6-4
SDG75S/100S
① Clean and change air filter element.
② Change engine oil.
③ Change fuel filter.
④ Change filter of fuel air-bleed
electromagnetic pump.
⑤ Check battery.
⑥ Change engine oil filter
⑦ Change coolant.
⑧ Clean inside and outside of radiator.
⑨ Clean inside the fuel tank.
Check generator insulation resistance.
H990340