MMD Equipment AirMan SDG125S-6A6, Instructional Manual

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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