KUHN GMD16 Operator's Manual page 71

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The side angle gearbox
Before draining oil, operate the machine for a
few minutes so that the oil warms up.
Oil volume
Type of oil
Viscosity
Specification
When changing the oil, it is recommended to use
either an identical mineral oil or a synthetic oil of
type PAO (Poly-Alpha-Olefine) with viscosity
grade SAE 75W90.
KN225BGB_A
GMD16
0.25 L (0.07 US gal)
Mineral oil (Gear oil)
SAE 80W90
API - GL5 (extreme pressure)
Disc mower
GMD16-GMD20
GMD20
10. - Maintenance and storage
71