For Emission Regulations (Wg752−Gl, Wg972−Gl, Dg972); Vaporizer And Gas Regulator; Length Of The Gas Hose - Kubota WG752 E3 Applications Manual

[2] For emission regulations (WG752−GL, WG972−GL, DG972)

(1) Vaporizer and Gas regulator

In order to conform to applicable EPA and CARB Emissions regulations when operating WG752−GL,
WG972−GL, DG972 engine, only a KUBOTA GENUINE VAPORIZER KIT (Gas regulator) can be used.
Vaporizer and Gas regulator can only be installed by an authorized KUBOTA DISTRIBUTOR or the manufacturer
of the equipment in which this engine is used.

(2) Length of the gas hose

The hose length between the vaporizer (gas regulator) and carburetor (gas mixer) must be within 300 ± 20mm
(11.8 ± 0.78inch).
The incorrect use of the hose may not conform to emission regulations.
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