Kubota WG972-GL-E3F — Thermostat Valve Opening Temperature
Testing & diagnosis
For the Kubota WG972-GL-E3F, from the Kubota service manual.
Browse Kubota generators & specs →
Procedure
- Suspend the thermostat in the water by a string with its end inserted between the valve and seat.
- Heating the water gradually, read the temperature when the valve opens and leaves the string.
- Continue heating and read the temperature when the valve opens approx. 8 mm (0.3 in.).
- If not within factory specification, replace the thermostat.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Valve opening temperature: 69.5 to 72.5 °C (157.1 to 162.5 °F)
- Completely open at 85 °C (185 °F)
Source: Kubota service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.