MMD Equipment 150S-6A6 - Manual (Page 52)

5. Periodic Inspection/Maintenance
5-12
(Procedure)
① To drain coolant, remove the radiator cap“1”, then loosen the drain valve“2”.
② Be sure to also unfasten the drain plug“3”on the engine cylinder block for drainage.
③ When the coolant is completely drained out, close each drain valve“2”and drain plug“3”, and
supply new coolant from the filler port“4”.
④ After changing the coolant, run the engine under unload operation for 2 to 3 minutes, then stop
it. Check the coolant level again and replenish it if necessary.
A050138
A050139
1
4
2
3