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Kohler — Filling the Gaseous Fuel Tank

Maintenance · Gaseous fuel tank assembly

From a Kohler operator's manual covering: 125REZGT, 30--125REZGT, 30REZG, 30REZGT, 50REZG, 70REZGT. Check it applies to your exact model before use.

Applies to: Kohler 125REZGT, Kohler 30REZG, Kohler 30REZGT, Kohler 50REZG, Kohler 70REZGT

Before you start

  • Filling and maintenance should only be done by a trained and certified gaseous fuel service technician.
  • Never fill above the maximum safe fill level of 80%.

Procedure

  1. Press the generator set master control OFF/RESET button.
  2. Disconnect the engine starting battery, negative lead first; disconnect battery charger power.
  3. Remove the yellow seal cap and connect the LP fuel supply line to the fuel tank ACME connector.
  4. Loosen (but do not remove) the fuel fill bleed valve.
  5. Dispense gaseous fuel and fill to 80% full; when fuel flows from the bleed valve, stop supply flow and close the valve.
  6. Disconnect the fuel supply line from the ACME connector and reinstall the yellow seal cap.
  7. Repeat steps for each remaining fuel tank.
  8. Check all fittings and connections for leaks using an approved leak detector solution.
  9. Wipe the fuel fill and bleed off valve areas; close the fuel tank access doors.
  10. Reconnect the engine starting battery, negative lead last; reconnect battery charger power.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Fill to 80% of volume with liquid
  • Fuel tank fill fitting 1 3/4 in. ACME
  • Fuel transfer hose size 13 mm (1/2 in.) max.

Full service-parts list: Kohler 125REZGT →, Kohler 30REZG →, Kohler 30REZGT →, Kohler 50REZG →, Kohler 70REZGT →

Source: Kohler operator's 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.

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