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  5. Original Series – Tank: How to reseal the tank with the Tank Glue Kit

Original Series – Tank: How to reseal the tank with the Tank Glue Kit

Your Original Series rower’s tank is a 2-piece design. Over time and with heavy use, the glue sealing the tank may become compromised and leak. To remedy this, the tank must be resealed.

If your tank has any cracks, you will need to determine what kind of tank you have (metal or plastic clutch) and order a replacement tank assembly.

Resealing the tank is a task that can be performed with attention to detail and patience. Please read all the instructions below and view the video before attempting this repair. If you decide to perform this repair, be sure to handle the tank with care — cracking the top or bottom half of the tank would cause irreparable damage, requiring replacement.

If you are not comfortable resealing your tank, contact us at [email protected] — you can ship your tank to us and we can reseal it for a modest fee.

Please note:

  • We highly recommend using a caulk gun to do this repair.  
  • To prevent premature glue curing, please perform this repair in temperatures between 50º-70º F (10º-21º C).
  • The glue has a shelf life and we highly recommend using the glue within 3 months of purchase.

The process and video below are applicable to all Original Series rower models.

Illustration showing the side view of a WaterRower with arrows indicating the positions for handle adjustments and connections.

Step 1

Remove the handle from the handle rests and place the handle in the full forward position. Empty the tank of water using the siphon that was included with your rower and leave the tank stopper out.

Illustration of a WaterRower machine showing the recoil belt mechanism with arrows indicating movement direction.

Step 2

Stand the WaterRower upright and disconnect the bungee from the recoil belt as shown.

Diagram illustrating the connection of the bungee to the D-ring on a WaterRower machine.

Step 3

Completely remove the handle/drive strap from the tank assembly by pulling on the handle. Some WaterRower models have the drive strap bolted onto the clutch, on others it is attached with Velcro (which may also have a bolt securing the strap). Leave the lower recoil belt in place.

Diagram illustrating parts of a WaterRower machine, including the tank assembly and handle components.

Step 4

Remove the footboard. To do this, remove the two handle rest bolts at the top. Also remove the four JCNs and JCBs that connect the footboard to the rails.

Schematic diagram showing components of a WaterRower tank assembly including tie rods and barrel nuts.

Step 5

Remove the 4 tie rod bolts on the front of the WaterRower that secure the top and bottom decks to the forward riser. Be careful not to lose the barrel nuts that will drop out from the underside of the top deck.

Schematic showing the positioning and alignment of the WaterRower tank assembly components during installation or maintenance.

Step 6

Slide the tank assembly (with clutch, pulleys, and the top and bottom decks attached) towards the seat to check that it is free of the rest of the unit. Lift the tank off of the rails, turn the tank over and rest it upside down (on the top deck) on a clean, dry surface that is at a comfortable height. Be sure the surface is free of any debris that could damage the top deck or get in the way of being able to work freely.

Illustration showing the two-piece design of a WaterRower tank, with an emphasis on separating the two halves for maintenance.

Step 7

Separate the two halves of the tank, being careful not to damage either half. Gently push in on inner “male” half to separate. Work your way around and test the tank carefully to find any “stuck” sections. All of the old adhesive must be removed. Use a razor blade to carefully cut and peel away any sticking, dried adhesive (the dried adhesive may look like a gasket).

If needed, a hair dryer may be used to help soften the old adhesive, making it easier to cut into and remove. Once you’ve broken the seal with the cuts, the bottom half of the tank should lift off with minimum force. Be careful at this point, as the tank half may flex and could easily crack – remove the bottom half evenly/squarely. Leave the paddle in place.

WaterRower customer, Chris Wood, offers this advice to separate the tank halves:

“I removed the old seal with 3 scalpel cuts. The first 2 cuts remove the bead of sealant along the top of the joint and allow you easy-access for the 3rd cut which is the narrow space where the two tank halves overlap. Having sliced through both surfaces where the sealant bead meets the tank, it should peel off like string, leaving clear access to the sealant between the overlapping tank halves.

If you’re lucky this might just lift out (some of mine had work-hardened), otherwise your 3rd cut is made by sliding the scalpel into the gap and cutting around the circumference of the tank. Given the depth of the seal, I had to do this about 2 times, cutting through a few millimeters at a time. I found making this cut put some flex into the scalpel blade and I had one snap; it would be wise to wear protective goggles.”

Illustration showing a hand cleaning the surface of a WaterRower tank assembly with a cloth, alongside a side view of the tank assembly

Step 8

lean both halves of the tank. Dry any residual water and completely remove any old adhesive. Wipe all surfaces with denatured alcohol and allow 2 minutes to dry.

Diagram illustrating the WaterRower tank assembly and its positioning on a flat surface.

Step 9

Carefully fit the two halves of the tank back together. Be sure they are fully engaged.
Note: Before you begin to use the adhesive, make sure you have everything ready and you are able to do the gluing process without disturbance — the glue sets very quickly.

Illustration of a 1/2" needle, luer lock, and adhesive mixer used for tank resealing.

Step 10

Assemble the applicator tip. Screw the ½” needle onto the hexagonal end of the white luer lock and tighten. Insert the narrow end of the mixing tube into the open end of the luer lock. You may need to use some pressure to get the threading to start. Tighten the needle, luer lock and mixing tube together.

Diagram of a caulk gun assembly with components labeled: Mix Nozzle, Sleeve, Cartridge, and Plunger.

Step 11

Follow the instructions printed on the back of the caulk gun adapter on how to assemble and insert the glue kit cartridge into the caulk gun.

Note:

  • Place the conversion kit, with mixer and cartridge, in a caulking gun as shown below.
  • Insert 50ml Cartridge, nose first, through the oval opening (this is the end with the smaller opening) of the sleeve until the cartridge flange fits snugly against the end of the sleeve.
  • Place the plunger in the back of the cartridge.
  • Connect the mix nozzle to the cartridge by removing the cap from the cartridge and breaking off the top section to allow the nozzle to fit into the cartridge.
Diagram showing an adhesive applicator being used on a tank.

Step 12

Rest the tip of the applicator needle in the corner formed at the edge of the seam of the tank.

Apply the glue evenly and smoothly into the seam. You may find it helpful to have someone work with you to gently rotate the tank for you as you glue along the seam of the tank. It may take several rotations of the tank until all the glue is used up.

Make sure you work quickly and continually. In doing so, the glue will be very liquid as it flows from the applicator tip and will be drawn down into the gap between the two halves of the tank. If you pause, the glue will become viscous as it exits the applicator tip and will not be drawn into the gap.

Try working at a rate of 1” per second.

Diagram showing a hand cleaning the seam of a WaterRower tank assembly, with the tank placed upside down on a flat surface.

Step 13

Wipe any drips away with a clean cloth.

A simple, minimalist clock face with hour and minute hands, and tick marks indicating the hours.

Step 14

Allow four (4) hours for adhesive to set.

Illustration showing the assembly of a WaterRower, highlighting tie rods and barrel nuts.

Step 15

Replace the tank assembly on the rails. Replace the four (4) tie rod bolts and barrel nuts on the front of the WaterRower that secure the top and bottom decks to the forward riser.

Diagram of a WaterRower showing the footboard assembly and connection points, with arrows indicating parts and screw locations.

Step 16

Replace the footboard. To do this, replace the two handle rest bolts at the top. Also replace the four JCN nuts and JCB bolts that connect the footboard to the rails.

Diagram showing the proper positioning of the Velcro strap on a WaterRower assembly, with an arrow indicating the direction the Velcro should face.

Step 17

Replace the handle. Ensure the handle/drive strap assembly is facing the correct way and the drive strap is straight (with no twists). Pass the Velcro/bolt end over the large pulley in the forward riser.

Diagram illustrating the clutch mechanism and drive strap connection on a WaterRower, showing bolt-on and Velcro attachment options.

Step 18

Pass the handle/drive strap around the large pulley and underneath the top deck back towards the clutch housing. The end of the drive strap passes inside (towards the center of the machine) the drive strap guide pulley (the upper of the two guide pulleys).

For Velcro attachment on metal clutch, take the end of the drive strap and place the edge against the side of the clutch nearest the monitor. For plastic clutch, see (A) in the image at left.

Illustration showing the recoil belt mechanism of a WaterRower rower, with the handle positioned in the full forward position.

Step 19

Once the handle/drive strap is attached, gently pull on the recoil belt. This action re-winds the drive strap around the clutch.

By continuing to pull the recoil belt, wind the drive strap onto the clutch so the handle reaches the full forward position.

Diagram illustrating the internal mechanism of a WaterRower, showing the routing of the drive strap and pulley arrangement.

Step 20

With the recoil belt is at its full length and wrapped 1½* turns around the recoil bushing, pass the recoil belt inside the recoil belt guide pulley and over the two pulleys in the forward riser. *If the recoil belt is wrapped more or less than 1½ turns, please adjust.

Illustration of a WaterRower's upright assembly showing the tank and recoil system with directional arrows indicating movement.

Step 21

Stand the WaterRower upright and connect the recoil belt to the bungee. Lay the WaterRower down – it is ready to use.

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