We receive lots of questions by our customers everyday. Some of them ask the same question because they want to hear different experts’ opinion. Considering the fact, that beginners are not able to recognize their mistakes and perform the same blunders over and over again, our experienced team of repair specialists put this article together using a compilation of some of the most commonly asked queries by people, whose hobby is gardening.

Park the 161 kubota excavator on a level, even surface

Engage the parking brake and shut off the engine. Open the hood to expose the hydraulic filter canister. There should be a label on the top of the canister clearly identifying it as such. Use an oil filter wrench to loosen and remove the hydraulic filter from its housing. Wipe away any dirt or debris that may have collected around the top of the hydraulic filter housing.

Position a new hydraulic filter into place. Make sure that you are using a filter that is rated specifically for your 161 Kubota excavator; otherwise, you could cause severe damage to your machine’s hydraulics system. Tighten down on the new hydraulic filter with an oil filter wrench until it is firmly in place. If you feel any resistance whatsoever, stop tightening immediately and remove the filter from its housing; improper fitting of a hydraulic filter could cause leaks or other damage to your machine’s hydraulics system.

161 kubota excavator

Pull out red dip stick from 161 kubota excavator hydraulic oil tank.

1. Start the engine and run it for 10 minutes so the oil reaches operating temperature. Stop the engine and allow it to cool until it’s cool to the touch.
2. Remove the dipstick from the hydraulic oil tank and pull out a length of paper towel or shop cloth. Dip the cloth into the hydraulic oil tank until it’s saturated, then remove it and look at its color. The oil should be amber or honey colored; if it’s any darker, it needs to be changed.

3. Put on safety glasses and face protection, then find the air filter housing on top of the engine compartment. Disconnect any electrical connections that may be attached to it, then remove all fasteners holding down the lid — there are usually two bolts as well as several clips in a circular pattern around them — and set them aside for safekeeping.

4. Lift up on the lid to remove it from the air filter housing, exposing the air filter element underneath it. Pry up on one end of the element with a flat-blade screwdriver, then grab that end with your fingers and pull up sharply.

Remove the 161 kubota excavator hydraulic filter found on the left side of the excavator.

The hydraulic filter is one of the most important filters in the 161 kubota excavator. It prevents any dirt or small particles from getting into the hydraulic system and causing damage to cylinders, valves and pumps. To change the hydraulic filter you must first relieve any pressure that may be in the system. Then disconnect the lines to the filter and remove it from its housing.
The hydraulic filter is one of the most important filters in the 161 kubota excavator. It prevents any dirt or small particles from getting into the hydraulic system and causing damage to cylinders, valves and pumps. To change the hydraulic filter you must first relieve any pressure that may be in the system. Then disconnect the lines to the filter and remove it from its housing.

1. Relieve any pressure that may be in the hydraulic system by turning on your excavator’s engine and then moving each control through their full range of motion. Then turn off your engine after all pressure has been relieved.

2. Locate your 161 kubota excavator’s hydraulic filter on your left side behind a plate with several screws holding it in place. Remove these screws with your screwdriver and set them aside along with their washers if they have them.

Pour about 1/4 cup of 161 kubota excavator hydraulic oil into new filter.

The hydraulic system is responsible for the function of the bucket and stick. The hydraulic filters are designed to remove any contamination from the hydraulic fluid. This will maintain the performance of the system. You should change the filter every 300 hours or so.
Instructions:

1 Locate the drain plugs on each side of the machine. These are found beneath the engine and above the fuel tank. The plug is a large cylinder with a hexagonal base and one or two bolts in it. Loosen these bolts with a wrench.

2 Open up the fuel tank with a screwdriver and locate the hydraulic fluid drain plug with a hexagonal base. Loosen this plug with a wrench. Allow all three plugs to drain completely before continuing. When they have finished draining, tighten up all three plugs again securely with a wrench and remove your tools from the area.

3 Locate the hydraulic oil filter beside the fuel tank just above where you drained it out of your 161 kubota excavator. Remove it by loosening its bolt with a wrench and twisting it free by hand once you can move it at all. Discard this spent filter properly when you are finished removing it.

Place new filter into161 kubota excavator and do not tighten.

The filter on my Kubota is on the left side of the tractor just below the seat. It may take a little while to find as it is not somewhere you normally think of looking. Even worse, it is not something that Kubota makes readily visible in their owner’s manual.
Just look down and you will find it tucked away. This is what it looks like after I removed it. To remove, simply turn the filter counterclockwise with your hands. You may need a pair of pliers or some sort of wrench to get a good grip on it at first, but if you are careful and use two hands, you can get it off with your hands alone. Once you have the old filter out, compare it to your new one (if you don’t know what to order, this one worked for me).

Place red dip stick back into 161 kubota excavator hydraulic reservoir

Run engine for a few minutes and then shut off engine. Remove and inspect red dip stick for debris or color of fluid. Place it back in to the 161 kubota excavator hydraulic reservoir. Run engine for a few more minutes and then shut off engine. Remove and inspect red dip stick again for debris or color of fluid. If debris is present, replace 161 kubota excavator hydraulic filter element. Clean out 161 kubota excavator hydraulic reservoir with compressed air. Repeat steps 1-3 until no more debris appears on the red dip stick. Start engine and run until normal operating temperature is reached (approximately 10 minutes).

Shut off engine and remove red dip stick once again. Inspect the red dip stick for contamination or color of fluid. If still contaminated, repeat steps 1-3 until no more contamination appears on the red dip stick. If no contamination was found, clean out 161 kubota excavator hydraulic reservoir with compressed air, replace filter element or cap, refill with new fluid and run engine until normal operating temperature is reached (approximately 10 minutes). 

Start 161 kubota excavator and let it run for 30 minutes without moving it

Start 161 kubota excavator and let it run for 30 minutes without moving it. Run the engine at low idle with the swing brake applied and the bucket return to dig position.
Loosen and remove the two bolts holding the hydraulic filter cover. If a bolt is stuck, use penetrating oil to loosen it. Remove the hydraulic filter cover. Remove the old hydraulic filter and discard it. Clean the filter gasket seat on the filter cover and inside of the filter cover with a clean cloth. This will ensure there are no particles left on either surface that can reduce the tightness of any new seal between these parts. Lubricate the new hydraulic filter’s rubber gasket with hydraulic oil or hydraulic grease.

Place the new hydraulic filter into the hydraulic oil reservoir, making sure that its rubber seal is facing up toward you. It may be necessary to use a twisting motion to insert this new part in a snugly fitting manner. Replace the hydraulic filter cover over its corresponding mounting location on top of this 161 kubota excavator’s engine block, making sure to align all necessary bolt holes properly so that they can be threaded by their respective bolts during reassembly of this part back onto this engine block. 

Turn off 161 kubota excavator engine and tighten screw until snug on new filter.

The Kubota KX161-3 is a compact excavator. The Kubota KX161-3 hydraulic system has two hydraulic filters, one that cleans the hydraulic fluid and one that purifies the return fluid. It is recommended to change the hydraulic oil filter every 250 hours of use. The hydraulic filter is located underneath the 161 Kubota excavator’s engine compartment on the left side.
Turn off the 161 Kubota excavator engine and tighten screw until snug on new filter. Use socket wrench with an eight-inch extension to remove the drain plug from bottom of 161 kubota excavator reservoir. To prevent oil from spilling out, place a pan under drain plug before removing it. Remove old filter from the machine by unscrewing it with a strap wrench and discard it into an approved waste container.

Check 161 kubota excavator hydraulic fluid level with stick to ensure fluid is back in operating range.

Hydraulic oil filters are designed to protect hydraulic systems from contaminants and abrasives that can cause damage and system failure. Because oil filters are the only line of defense against harmful contaminants, it is critical to have a filter that can trap these contaminants over the entire surface area of the media, while having a low restriction level.
The new Ultra-Web nanofiber technology provides an absolute filtration rating that is up to 10 times higher than conventional cellulose media filters. This high-efficiency filtration allows for longer service intervals and lower operating costs by helping to keep hydraulic systems cleaner, allowing them to run more efficiently and last longer. The nanofibers used in Ultra-Web technology are 15 times smaller than the fibers normally used in cellulose media, which allows the filter media to be packed more densely together.

When more fibers are packed into a smaller space, there is more total surface area for trapping harmful particles and debris. This increased surface area also means there will be less pressure drop across the filter as it fills with contaminants, so there is less restriction on flow.

It is important to check your filter frequently to prevent damage to your 161 kubota excavator

Hydraulic filters are one of the most important parts of your excavator. The fluid pumped through the hydraulic system is filled with contaminants that can accelerate wear and cause premature failure of vital components. The filter removes these contaminants before they can cause damage. The hydraulic filter should be checked at regular intervals and changed when needed to ensure maximum performance.
Step 1 Park your Kubota in a level area, set the parking brake and shut off the engine. Raise the boom, arm and bucket using the hydraulic controls, then lower them so that they are resting on wood blocks. This will prevent them from falling if you accidentally knock off a hydraulic line while removing or replacing the filter. Step 2 Inspect the hydraulic filter for discoloration, cracks or other signs of damage or wear.

If you notice any problems with the housing or filter itself, replace it immediately to prevent possible damage to your Kubota. Manufacturers typically recommend changing hydraulic filters after every 500 hours of operation regardless of their condition. Step 3 Place a drain pan under the oil filter to catch excess fluid and remove the oil drain cap from the bottom of the filter housing to allow it to drain completely. 

Summary:

I replaced my hydraulic filter today on my kubota l3400, with a new one in the same style. I stole a marine filter from a boat store after they gave me grief about trying to take it without buying it. I told them i was going to throw it in my truck just to get rid of them, after they gave me their usual 10 minute lecture on the difference between freshwater and saltwater filters. My initial concern was that the o-ring would be different than that of a marine hydraulics plant. In fact the only differences i noticed are minor, but include such as not having an outside rubber boot anywhere on the construction of the unit, unlike quadboss or perry hydraulics units. And off course there is no oil fill plug like my hilift brand unit has.

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