New Holland Boomer 47 Operator's Manual page 146

2. If the oil level is low, remove the filler cap (2) add oil
through the filler hole.
3. Add enough oil so that the level registers between the
(L) low and the (H) high marks on the dipstick. Do not
overfill.
7 - MAINTENANCE
7-8
2
NHIL13CT01118AA
3
93100903