An outdoor handheld power tool formed as a split power tool is provided. The split power tool can be used in a chainsaw configuration or a polesaw configuration. The split power tool includes a handle end, a pole, and a tool end, wherein each of these components is releasably connectable to the others. The attachment assemblies of each of the components allows the cutting saw of the tool end to be aligned with the handle of the handle end when in the chainsaw configuration, yet the cutting saw of the tool end is oriented at an angle relative to the handle of the handle end when in a polesaw configuration with the pole extending between the handle end and the tool end.

Centrifugal water pump systems are provided that can include: a chainsaw with a motor, a throttle, and a chainsaw bar; a water pump head with a suction pipe and a discharge pipe; and a coupling device configured to operably connect the chainsaw bar to the water pump head. Chainsaw accessories are also provided that can include a centrifugal pump configured to be coupled to the chainsaw bar. Chainsaw accessory kits are also provided that can include a centrifugal pump, stabilizer spikes, and a throttle control. Methods for using the chainsaws, pumps, and/or kits are also described.