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Hercules G-1600 — Thermostat Replacement

Maintenance · cooling system

For the Hercules G-1600, from the Hercules service manual.

Before you start

  • Loosen radiator cap 3/4 turn to release pressure before removing radiator cap.

Procedure

  1. Drain coolant, disconnect radiator inlet hose from thermostat housing, and remove thermostat housing cap screws.
  2. Remove thermostat housing, thermostat and gasket from cylinder head.
  3. Replace the thermostat and install a new housing gasket.
  4. Reinstall thermostat housing to the cylinder head and connect hose.

Specs & values

  • Install thermostat with valve facing outlet

Source: Hercules 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.

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