1. Loose hose. Inspect the connection to ensure it is not cross threaded, and then hand tighten the hose nut.
2. Inspect the pump gasket. Depressurize the sprayer and remove the pump from the tank. The pump gasket is located at the top of the pump right above the threads (See Figure 2). Remove the dirt or debris from the gasket and pump threads by wiping with a clean cloth. Then lubricate gasket with a light oil (i.e., 3-IN-ONE® Multi-Purpose Oil) to keep gasket from drying out. Replace pump in tank and hand tighten until it is snug. Do not overtighten as it can cause damage to the gasket. NOTE: If you notice the gasket is chipped, torn, swollen or misshaped, it will need to be replaced by ordering a pump service kit.*
3. Inspect the pump check valve. With the pump removed, locate the check valve at the bottom of the pump (See Figure 3). Make sure there is no dirt or debris underneath the check valve. It can be easily removed, washed and put back into place. If you notice it is damaged or worn, it will need to be replaced by ordering a pump service kit.*
4. Inspect pump piston o-ring. After you have removed the pump from the tank, you will need to separate the pump piston from the pump barrel. Squeeze the tabs on the cap and pull away from the barrel (See Figure 4). At the end of the metal piston/rod, there will be an o-ring (See Figure 5). Periodically this o-ring needs to be lubricated with a heavy coating of petroleum jelly to ensure a nice tight seal in the pump barrel - delivering as much air as possible per stroke. If you find this o-ring seal to be worn, damaged, or swollen, it will need to be replaced by ordering a pump service kit.*

Figure 2

Figure 3

Figure 4

Figure 5

1. Shut-off lock is partially engaged. Squeeze shut-off lever all the way down and push the trigger lock towards the nozzle to unlock (See Figure 6).
2. Dirt or debris in the shut-off valve. The valve is located inside the handle, so the first step is to depressurize the sprayer and release all liquid from the wand. Then unscrew and remove the shut-off assembly from the black rubber grip and hose (See Figure 7). It will come apart right above the section that reads "FILTER". Remove the white filter inside the handle and flush with clean, cold water to remove any debris. Then flush cold water through the shut-off poppet (metal rod located within yellow nut). Press the shut-off lever (like you would as if you were spraying) for the poppet to open and allow the water to flow through. Lastly run cold water through the handle and hose.
3. Damaged o-ring or seal in shut-off. If the steps above haven't solved the issue, the o-rings or seals could be damaged and need to be replaced by ordering the shut-off service kit. *

Figure 6

Figure 7

Inspect the pump check valve. Depressurize the sprayer and remove pump from the tank. Locate the check valve at the bottom of the pump (See Figure 3). Make sure there is no dirt or debris underneath the check valve. It can be easily removed, washed and put back into place. If you notice it is damaged or worn, it will need to be replaced by ordering a pump service kit.

Figure 3

1. Loose hose. Inspect the connection to ensure it is not cross threaded, and then hand tighten the hose nut.
2. Cracked, swollen or faulty hose. If the hose becomes cracked or swollen, it will need to be replaced by ordering a shut-off assembly *Note: The hose cannot be removed from the shut-off, so it will also need to be replaced.

1. Too much liquid in the tank. The sprayer has raised fill markings on the side of the tank - only fill to the max fill line. This will allow enough room in the tank for the air/pressure needed to allow the sprayer to function properly.
2. Inspect pump piston o-ring. Depressurize the sprayer and remove the pump from the tank. You will need to separate the pump piston from the pump barrel. Squeeze the two tabs on the cap and pull away from the barrel (See Figure 4). At the end of the metal piston/rod, there will be an o-ring (See Figure 5). Periodically this o-ring needs to be lubricated with a heavy coating of petroleum jelly to ensure a nice tight seal in the pump barrel - delivering as much air as possible per stroke. If you find this o-ring seal to be worn, damaged, or swollen, it will need to be replaced by ordering a pump service kit.*

Figure 4

Figure 5

1. Substance is too thick for the sprayer. These sprayers are not designed to spray liquids with thicker viscosities (i.e., paint, stains, some sealers, etc.). They are ideal for herbicides, insecticides, pesticides, fungicides, fertilizers, and other chemicals with the consistency of water (Caution: Never use flammable liquids, caustics, acids, or hot water in these sprayers.) Please contact our customer service if you have a question regarding a specific chemical.
2. Flat seal (for flat fan tips) is missing or damaged. Remove the nozzle from the wand and then remove the flat fan tip from the cap nut. Make sure there is a flat seal at the bottom of the cap nut. If it is missing or damaged, it can be ordered with the poly nozzle kit or the brass nozzle kit.*
3. Sprayer wand or nozzle is clogged. Remove the nozzle from the wand. Flush wand, shut-off and nozzle with clean, cold water.
4. Dirt or debris in the shut-off valve. The valve is located inside the handle, so the first step is to depressurize the sprayer and release all liquid from the wand. Then unscrew and remove the shut-off assembly from the black rubber grip and hose (See Figure 7). It will come apart right above the section that reads "FILTER". Remove the white filter inside the handle and flush with clean, cold water to remove any debris. Then flush cold water through the shut-off poppet (metal rod located within yellow nut). Press the shut-off lever (like you would as if you were spraying) for the poppet to open and allow the water to flow through. Lastly run cold water through the handle and hose.

Figure 7