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Rectangle Adapter 131x81mm (5×3″)

Internal diameter of 131x81mm. This adapter is suitable for driving 5×3″ rectangle posts.

To drive in 5×3″ posts a pilot hole must be made in the ground first. A 2″ pilot hole is the recommended size. If the ground is very hard or dry, fill the pilot hole with water and leave to soak before driving the posts into the ground.

Our Pilot Core Tool can be used to make a pilot hole, or alternatively an Earth Auger.

Using a 6mm hex key to unscrew the 8 bolts & locking washers. Slide the current tube off the base of the Post Driver. Slide the new Adapter into its place and attach using the same bolts and washers. Remember to use a Locking Compound on the screw threads to stop them vibrating out.

To get the most effective use from the Post Driver, the Adapter size must be a snug fit for your Posts. We recommend the Adapter must be no more than 5-10mm larger than your Post. For shaped posts; squares / t-shapes etc. the outer corners need to be within this capacity.

If you are unsure what adapter are right for you, please contact us for advice specific for your application.

The maximum capacity of the machine is 107mm round diameter.
Our largest adapter is 107mm internal diameter.

When the ground is very dry, compacted or stony, you will need to make a pilot hole for posts larger than 78mm. This can be either by hand using a Pilot-Bar, or mechanically using either our Pilot Core Tool or an earth Auger. Posts smaller than 78mm should not need a pilot hole unless the ground is very hard.