Kubota WSM User Manual

4-M3
ZD18(F) · ZD21(F) · ZD28(F), WSM
HYDRAULIC SYSTEM
2. HYDRAULIC PUMP
The oil pump in this engine is a trochoid pump.
Inside the pump body, the 6 lobe inner rotor (2) is
eccentrically engaged with the 7 lobe outer rotor (1). The
inner rotor is driven by the input shaft, which in turn rotate
the outer rotor.
W1012820
(1) Outer Rotor
(2) Inner Rotor
(3) Pump Case
(4) Input Shaft
KiSC issued 04, 2009 A

Kubota WSM Specifications

General

Brand	Kubota
Model	WSM
Category	Lawn Mower
Language	English