A Quick fix for your crippled Compound Lopper

(1) - If your Lopper looks like this, or your Knuckles touch before the Cutter closes,
then it's time to make this simple fix. It can be done with a Hacksaw and Welder, or a Hacksaw, Drill Press and new Link Stock.

With the original style Loppers there was only one Bolt to wear. This Compound Lopper has 4 Bolts to wear. The more they wear, the closer the Handles become. In our case, the Handles were touching.

Compound Loppers cut easier because you must move the Handles farther to move the Cutter an equal distance. In addition the Handles are usually longer, giving more leverage. And some even have telescoping Handles which may give even more leverage. But all this increased leverage puts more stress on the parts, causing them to wear much faster.

A typical 24" original style Lopper has a Handle movement of 17-1/2" which moves its Cutter 2-1/2" at its tip. An equal movement of a Compound Lopper moves the Cutter only 1-1/8",  which represents an increase of cutting power of  122%. The additional Handle length of a typical 36" Compound Lopper raises this to 333% more cutting power.

You could put Bushings in the Bolt Holes and replace the worn bolts, but that would be very time consuming compared to the quick fix detailed here. Later on, you might do this a second time before the parts get too worn to be serviceable. At that point the Lopper has earned its keep and deserves retirement on the back shelf.

(2) - First cut the Link in half at "X".
Hold the Cutter closed with a Rubber Band or Bungee Cord.
Move the Handles so the ends are 10" apart.

Measure the distance (X) between the cut Link halves.
Make a note of this important measurement.
Then unbolt the two Link halves.

(3) - Decide if you want to make a new Link or weld the old one. If you weld the old one, insert a piece of metal the size of "X" between the Link halves and securely clamp the halves to a  flat surface. Weld the three pieces together and reassemble the Lopper.

If you decide to make a new piece, cut it to the length of both Link halves plus the dimension of "X". Then clamp the 2 halves to the new Link, separated by the dimension of "X". Use the old holes as a guide to drill two holes in the new Link. Reassemble the Lopper.


This is a good time to make sure the rocking Anvil is properly adjusted.
It's a simple but important tweak to making clean cuts.

(A) - If you can see light between the Cutter and Anvil, it needs to be adjusted. One bolt has been removed to show the over-sized hole which allows adjustment of the Anvil.

(B) - Loosen the two Bolts that hold the Anvil. Then rock the Anvil until no light shines through between the Anvil and the Cutter. If you are unable to get enough movement of the Anvil, then it is necessary to enlarge the holes to compensate for  wear. Tighten the two Bolts while holding the Handles tightly together. Then go find a limb that needs cutting.

Note:
If you have a Bypass instead of an Anvil model as shown,
the repair is done the same as for our Anvil model,
but you will have no Anvil to adjust.