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Manuals

Symptoms

The bar is bent or cracked, chain links or cutters are broken, or the guide-bar scabbard is split, missing, or will not stay on.
With the bit removed, the driver makes continuous abnormal grinding, knocking, or scraping.
With no accessory load, the front drive makes abnormal metallic noise or feels rough.
The cool dry battery shell appears closed, but a new loose rattle, clunk or shifting movement is heard inside after a drop or impact, with no swelling, liquid, smoke, odor or heat.
The collar moves normally, but the clutch ratchets before a suitable fastener reaches normal depth at appropriate settings, or it audibly slips when drill mode is correctly selected.
Battery loses charge rapidly while stored disconnected

Failure Modes

part