
Normally, I am not happy when a tool I own stops working. Pictured above is the cordless pruner I have used for the last week while clearing the yard of trees, saplings, and downed limbs. Our local composting facility will accept such yard waste if it is less than 4 feet long and 4 inches in diameter. A twenty-foot 4-inch diameter tree requires about 10-20 cuts with the chainsaw and several hundred with the pruners to meet the requirements. Multiply by several dozen trees and hundreds of smaller bushes. I have little doubt that I made more than 5,000 cuts with the tool in the last week alone and who knows how many during seasons past. When it stopped working yesterday, I was surprised only by how long it had held up to the relentless use.
Today, I took some time to figure out the failure mechanism and see if I could effect a repair. The brushes in the DC motor have reached the end of their service life and are not available as a replacement part. You have to replace the entire motor, which is half the cost of a new tool. Although there is still some usable brush material remaining, the angle of contact with the commutator is out of range for proper operation. Also, the pruning blades are quite well worn.
I did not hesitate to pick up a new tool (on sale, luckily) and am back in business. I hope that this tool will get a brushless DC motor upgrade in the future.




























































