Horse Flame Yarrman Thermostat KnobThe thermostat knob is the control interface for the temperature regulation system on the Yarrman Boiler stove. If the existing knob has cracked, snapped, or become stiff and hard to turn, replacing it restores smooth, accurate control over your stove's heat output. This is a direct fit plastic replacement for the Horse Flame Yarrman Boiler HFB717. Compatible with: Horse Flame Yarrman Boiler (HFB717 HF717 B) Specifications Material: Heat resistant

A damaged ash lip allows ash to fall out of the firebox when the door is opened

Schott ROBAX is a borosilicate ceramic glass manufactured in Germany to withstand the repeated heating and cooling cycles of domestic stove use

well-fitted seal gives precise control over the burn rate

Part type: Top flue outlet section

stopping logs from rolling out when you open the door to refuel

Replacing a warped or broken fence restores the fuel containment function and keeps the front of the stove safe to operate during loading

A good door seal is one of the most important maintenance items on any stove

Material: Metal body with plastic knob

Part type: Fire fence / log guard

keeping burning fuel contained when refuelling

✅ Compatible with: Mulberry Beckett boiler stove

then lift the old frame out