Downrigger

Downrigger Mount Install Instructions. Notice read instructions or risk loss of equipment.

Miller Marine Products adapter:

1) Older Miller Marine Products rail system with # 10 mounting screws. Drill out and replace # 10 machine screws with larger ¼” machine screws in the area where this mount will be used. Make sure you have a ¼” machine screw bolted through the rail to the boat (no self-tapping screws) on each side of the area this mount will be used. Rail systems sold after January 1, 2020 approximate date will have ¼” holes in the rail. Prior to January 1 2020 approximate date will have drilled holes for #10 machine screws those rails will need to have the holes drilled and countersunk for ¼” flat head machine bolts. Feel free to call if you have any questions 360-931-4338.

2) It is recommended for all stainless steel bolts to aluminum part connections you apply a protectant like never seize to control corrosion.

3) Bolt the dovetail bar with four holes in the top position on the inside of the main mount with the four slots. The dovetail bar should have a star washer in the recessed area so that the star washer is in contact with the main downrigger mount and the dovetail bar. Do not tighten yet.

4) Bolt the square bar with four holes in the bottom position on the inside of the main mount with the four slots. The square bar should have a star washer so that the star washer is in contact with the main downrigger mount and the square bar. Do not tighten yet.

5) Install the dovetail bar with the 2 holes between the square bar and the other dovetail bar hold in place using the hand knobs. Don not tighten yet.

6) Place the downrigger mount in place with the rubber stoppers against the top of the gunnel so the bracket is fairly level. Loosen all fasteners to allow easy movement of the parts.

7) Push down the top dovetail bar so it is resting on the installed rail (boat rail) tighten the top bar 4 bolts with a 7/16” wrench. (There should be star washers between the bars and the downrigger bracket, the split lock washer against the head of the bolt and the round washer will rest against the slots in the downrigger mount.)

8) The second dovetail bar with hand knobs is then slid up to mesh in with the bottom of the boat rail tighten those hand knobs hand tight.

9) Push the bottom 5/8” square bar up tight against the dovetail bar with the hand knobs, tighten the bottom bar 4 bolts with a 7/16” wrench. (There should be star washers between the bars and the downrigger bracket, the split lock washer against the head of the bolt and the round washer will rest against the slots in the downrigger mount.)

10) Rubber pads may also use longer full threaded machine screws if the spacing of the rubber pads with hardware supplied doesn’t reach the gunnel. Using a longer fully threaded ¼”-20 SS bolt with 2 – ¼” – 20 nuts (new bolt not supplied).

To lengthen the rubber bumpers use a flat washer on the head of the machine screw (supplied) (longer machine screws not supplied) then install the rubber bumper, next place the large 1.5” outside diameter washer (supplied)against the rubber bumper followed by 2 – ¼” -20 SS nuts. Run one nut down tight against the large washer and use the other nut for locking the bolt in place on the underside of the mount.

Other manufactures rod mount installation.

1) It is recommended for all stainless steel bolts to aluminum part connections you apply a protectant like never seize to control corrosion.

2) Place the downrigger mount in place with the rubber stoppers against the top of the gunnel so the bracket is sitting fairly level.

3) Use the center 2 slots to mount the downrigger bracket to a rail rod mount adapter.

4) Use a star washer between the rod mount adapter and the downrigger mount. (There should be star washers between the rod holder mount and the downrigger bracket, the split lock washer against the head of the bolt and the round washer will rest against the slots in the downrigger mount.) Tighten the 4 bolts securely the bolts provided are ¼”-20 if your rod mount uses a different thread bolt you will need to source those bolts and washers. Miller Marine Products does not guarantee the strength of another manufactures rod mounts you must determine if those parts are up to the duty of holding the downrigger bracket securely. Do not use plastic rod holder rail mounts they are not up to the duty of holding the mount in place.

6) Rubber pads may also use longer full threaded machine screws if the spacing of the rubber pads with hardware supplied doesn’t reach the gunnel. Using a longer fully threaded ¼”-20 SS bolt with 2 – ¼” – 20 nuts (new bolt not supplied).

Using these downrigger brackets without all of the proper hardware properly installed risks loss of downriggers if you have any questions please email info@MillerMarineProducts.com before using this product.

Parts List

1 – Down rigger angle plate

2 – Rubber Bumpers

4 – ¼” flat washer

2 – ¼” ID x 1.5” OD flat washers

4 – ¼ - 20 hex nuts

2 – ¼ -20 x 1.5” pan head machine screws

Parts list option Miller Marine Products rail mount

8 – ¼ - 20 x ¾” hex head bolts

8 – ¼” round washers

8 – ¼” external tooth lock washers

8 – ¼” split ring lock washers

2 – ¼” – 20 x 5/8” thumb screws