Corona Tree Pruner Replacement Head Assembly Fits TP 6830, TP 6850, TP 6870, TP 5850

Solved my problem, fit perfectly.

I bought a Corono pole saw/pruner at a big box store. It is obviously the cheapest thing Corona makes. After maybe 5 years of use, the head unit cracked and came off the pole. The problem is, this model isn't made for a replaceable head (it is riveted on, not bolted). I didn't want to send the pole to a land fill and replacement poles are $50 so it was worth something. After some discussion with Corona custover service, I bought this head unit which is a bit nicer than the previous one. I had to drill out the rivet to get the remainder of the unit off. The only issue I had was that the new head unit didn't quite fit. I had to trim the end off the plastic end on the pole until the new unit fit and lined up with the holes. Now I have a working pruner again and it works great. Caveat - this review was written soon after purchase. Only time will tell how well it works out.

Some minor modification was required to get item to fit properly onto pole. Also had to replace cord with a smaller diameter cord. Cord provided binds in pulley mechanism and prevents spring from returning cutting blade to fully open position

Superb construction! Easy replacement on existing pole

Cord jams pruner head. I made a total of three cuts using this brand new pruner head. Two cuts jammed: the cord got wedged into the space between the pulley and the frame both times. Returning it for a chain drive. This after jumping through a couple of hoops getting the old pruner head off (so old it was riveted on) and the new one secured (no bolt and nut provided, plus it only fits around the old plastic sleeve with modification).