stihl #1
Well-Known OPE Member
One other thing I have seen on extendable pole pruners is binding in the shaft. I keep an old clutch drum in my box and with the engine off I use it to spin the shaft when assembling a unit that was apart for repair, and to make sure the drive shaft does spin easy. I have seen bearings seize from getting water up in the shaft and binding due to a bent shaft, so even a newer unit may have a binding problem that could keep it from reaching full RPM.
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