Easy job to do. The probe comes as a complete assembly and the only fiddly bit is using small circlip pliers to remove the circlip that secures the probe assembly to the bolt. The fine adjustment is easy on later Rapids as the probe seal is fine-tuned by means of an allen key at the back of the bolt whereas earlier Rapids require shim washers behind the probe assembly.
Remember also when working on Rapids that you need IMPERIAL allen keys NOT metric.
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