how to check a damaged cooktop control knob
a cracked knob is a different fault from a damaged spindle, valve or electrical switch. keep the control off and have the underlying mechanism checked before choosing a knob.
157240686 supplies one silver-finish knob with a black marker and fitting insert; it does not include the valve or switch.
- repair type
- technician service
- difficulty
- moderate
scope: match the old insert and marker position. Baumatic BG4S instructions prohibit knob removal for cleaning and direct defective-product repairs to an authorised service agent. do not lever against the panel or turn an exposed shaft with tools.
diy warning
working on appliances can involve mains electricity, water and moving parts. always disconnect power and water before you start. in Australia, gas work must be done by a licensed gasfitter, and fixed (hard-wired) electrical work by a licensed electrician. everything on this site is guidance only, and any repair you carry out is at your own risk. we are not responsible for any damage or injury caused by attempting a repair. if you are not confident, please use a qualified technician.
i agree, show repair advice
steps
- look at the cold knob
with the controls off and cooktop cold, look for a crack or missing piece without pulling the knob off. use the model label or paperwork and any already-removed knob photo to compare the underside insert and marker.
- leave the control off
do not use a broken knob to operate the burner or turn the exposed shaft with tools. do not lever against the panel or force the shaft.
- have the knob fitted
ask an appliance repairer to check the model's service requirements and the underlying control. check the full model in the compatibility checker and have the right knob fitted by the permitted method, without changing the valve, switch or shaft.
- check the marker
after fitting, the marker must agree with the control position and the burner must turn off normally. otherwise leave it off and seek service.
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