Makita corded hammer drill HR2470 loss of power and sparking inside vent slots,is there a fix people if so is it worth it.very sad 10 years of abuse it's received,would like to squeeze abit more life.cheers in advance
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Hi @kurtpaul
Sparking is usually caused by worn carbon brushes and dirty copper commutator strips.
Here's a video that shows how to disassemble the drill so that the commutator strips on the armature can be cleaned and also how to replace the brushes.
Search online for 194074-2 CB-325 to find brush suppliers that suit you best.
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