Question about Makita Tools 18V 1/2" Lxt Lithium - Ion Hammer Driver - Drill Kit - BHP451
The gearbox is good,what the problem is,is the nylon speed change ring that goes on the outside of the gearbox that takes the power of the gearbox,the end of the teeth,about 2mm or less strip making only noise when in 2nd or 3rd gear,,they sell it with the new gearbox and charge you,,,,,but you can buy it separatly,,,the part no.419558-2,,pick key 01820914
Posted on May 21, 2010
I had the same problem with my 451, after some research and with a exploded parts list i found that makita have an improved replacement gearbox assembly, The part number is 125430-5 Gear assembly and you will also need to replace the change lever, part 125435-5 total price inc delivery was $91.80 inc delivery from Syd Wilson electrics. email@example.com.
Posted on Dec 21, 2008
You also might want to consider just buying a new drill-only replacement (currently $118.80 at Tyler Tool: tylertool.com/makita). Comes with a new three year warranty, so you can send it back to be repaired by Makita next time.
Posted on Mar 10, 2009
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