In our K38 courses our students are conducting the tune ups on their training Jet Skis. They will change the oil and when needed replace the oil filter cartridge. I'll run you through a quick review of what we have them do.

Sometimes the cartridge wasn't set right the previous time and it can be challenging to remove. Don't stress, you can get that project done with a little advice.

The inspection discovers there is oil leaking from the oil filter. Do not use the Jet Ski®.

Immediately take it out of service. If you see oil in the bottom of the engine compartment, or notice oil splaying around the oil filter or leaking, or the warning indicator light on the LCD flashes the code: OIL), the ECU will place the craft in ‘safe mode’ due to low oil pressure (3 000 rpm).


Cause of oil leak: Oil filter was not installed properly.

It is important take grease and coat the rim edge with the rubber gasket.

Putting the oil filter on the threads must be lined up appropriately.

The oil filter needs to be put on with the correct torque specifications.

Example: Kawasaki STX-15 Jet Ski® 2014 model.



It is important to follow the manufacturer’s recommendations. If the craft is under warranty have the dealership maintain the craft during this period.

However, it is important to know how to change the oil and oil filter in case of water immersion or ingestion. You will need specialty tools.

Oil it to be replaced every 50 hours. Engine Oil Filter every 100 hours or as needed

First Step
You will need to complete an oil change.

• Remove the engine cut off switch from the ignition post.
• Level the Jet Ski® on the trailer or shop cart.
• Remove the oil dip stick (When you replace make sure the O section of the finger pull is facing the cylinder)
• Place the oil removal tube (straw) down the dip stick opening.
• Four Stroke SAE 10W-40 Marine grade oil, 5 US quarters or 5.0 L.

When you drain the oil, make sure you replace as much oil as you removed. Do not overfill!


The manufacturer recommends that you use the following tools for oil filter installation and removal:

1. Funnel
2. Eye protection/gloves
3. Ratchet
4. Oil filter removal tool


When the oil filter is frozen in place and is difficult to remove you will have to take aggressive removal measures.

Due caution must be used to not damage the threads of the lower-case unit.

You will struggle a bit to do this procedure. (Put some muscle into it!)

You will have to use the stubby claw hammer and ram the Philips head screwdriver through the can, and the can will have to be crushed.

You may ruin the screwdriver so don’t use a high-quality tool This is being done on an angle.

Make sure you are working on the angle of the threads to the casing to not cause damage.

Remember to hold the oil filter in an upright position because residual oil may be inside the cartridge.

Place an absorbent pad below the working area of the oil filter cartridge.


1. Phillips head screwdriver
2. Stubby claw hammer
3. Channel Locks
4. Fuel/oil spill bibs

When replacing the oil filter use the torque specifications: 18 N-m (1.8 kgf-m, 13 ft-lb)

Replace oil as stated above. Test the water craft using the water flush mount and flush instructions.

Warning: Refer to manufacturer’s settings and recommendations. Use at your own risk.
This review is not to be relied up 100%, have a qualified Kawasaki mechanic perform all inspections and maintenance on your Personal Water Craft to ensure a safe operable vessel. Reference materials: KMC

Posted: June 26, 2019

Content Creator of Rescue Water Craft and Personal Water Craft boating international education standards: Shawn Alladio is the world’s foremost authority and leading subject matter expert. She cares most about her community and the culture surrounding the safety of event service providers and Rescue Water Craft operators, working hard and dedicated towards protecting their reputation, distributing safety information and continuing to train these amazing individuals to the highest standards of care.


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Use at your own risk. Please take a qualified Rescue Water Craft training course and maintain proper records and respect all the PWC, RWC, PPE, and gear OEM manufacturer warning labels and cautions.

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