Kawasaki Ultra 250/260/300/310 Performance, Maintenance, and Information Database

[smokeysevin]

This thread is an index of numerous threads that have been posted by our members, the purpose of which is to help answer questions of people who are new to the site, the Ultra platform, or PWCs in general. If you are looking for the Ultra LX (naturally aspirated) or the STX please see this thread.

This index will be updated from time to time with new threads and is broken up into the following groups.

Basic Maintenance

1. Initial Setup
2. Post Ride Care
3. WATER INGESTION
4. Oil and Oil Filter
5. Spark Plugs
6. Exhaust Filter
7. Cooling Hoses
8. Intercooler
9. Supercharger and Supercharger Belt
10. Jet Pump and Impeller

Performance and Mods

1. Hull and Seat
2. Pump and Impeller
3. Handling Components
4. Engine
5. Fuel System
6. Supercharger
7. ECU and Speed Limiter Bypass
8. Intake and Exhaust
9. Top Deck and Controls
10. Electrical and Bilge Pumps
11. Race Mods and Rules

Extra Information

1. 250/260 Information
2. 300/310 Information

Basic Maintenance

1. Initial Setup and Information
   1. Videos of Our Ski By Rod_ROD
2. Post Ride Care
3. WATER INGESTION
   1. Ultra Water Ingestion Repair

1. Oil and Oil Filter
2. Spark Plugs
   1. Ultra Spark Plug Torque
3. Exhaust Filter
4. Ultra 250/260/300 Update for Ultra 310 Exhaust Filter Retaining pin by Nicjak
5. Tips on Ultra 300/310 Exhaust Filter Replacement or 250/260 Upgrade

1. Cooling Hoses
2. Intercooler
   1. Ultra Intercooler Cleaning

1. Supercharger and Supercharger Belt
   1. Ultra 300 S/C Oil Spec
   2. How To Change Your Ultra 300 SC Belt

1. Jet Pump and Impeller
   1. Ultra Jet Pump Removal

Performance and Mods

1. Hull and Seat
   1. Ultra Ram Air Hood Mod
   2. Ultra Heat Extractor
   3. Ultra Seat Discussion

1. Pump and Impeller
   1. Ultra 250 Impeller (155 mm)
   2. Ultra 250 Pump wedge (155 mm)

1. Handling Components
   1. Ultra Reverse Lever Latch Mod
   2. Ultra Riva Sponsons
   3. Ultra Intake Grate and Ride Plate Comparison
2. Engine
   1. Ultra Timing Mod
   2. R&D 250X + LX Crankcase Vent Kit Instructions
   3. Ultra 250 Oil Contamination Management System

1. Fuel System
   1. R&D Extended Fuel Pickup

1. Supercharger
   1. Ultra 250/260 Pulley Match Up
   2. DIY Ultra Belt Holder
   3. Ultra 250 OEM BOV Mod
   4. Ultra 250X Intercooler Mod
   5. R&D 250X Pulley Kit Instructions
   6. Intercooler Maintenance and Cleaning
2. ECU and Speed Limiter Bypass
   1. Riva Speed Control Override Module on 300x
   2. Do not use the washer mod... Seriously, don't.

1. Intake and Exhaust
   1. Ultra 250/260 Boost Hose Rubbing
   2. Ultra 250/260 Offshore Intercooler Water Line Rerouting
   3. Ultra 250/260 Riva Pro Air Intake
   4. Ultra 250 Riva Free-Flow Exhaust 2007
   5. Ultra Riva BOV and Relief Valve Bypass Filter
   6. R-Rated Ultra 250 Air Intake
   7. Ultra 250/260 Riva Complete exhaust 2008

1. Top Deck and Controls
   1. Handle Bar Extensions
   2. Budget Ultra Steering
   3. Ultra UMI Steering
   4. Ultra 250 Hydrotoys Mods (Grip Install, Pelican Box Install, and Reverse Lever Mod)

1. Electrical
   1. GPS and Bilge install on Ultra
   2. Depth Finders; What Type/Brand Works Best For You?
   3. Battery Tender and 12v Plug Install
   4. Ultra 250 Bump start mod
   5. Stealth Mode - "Blow Hole" Bilge Discharge Ports
   6. Ultra 300 Bilge Pump and Switch Install

1. Race Mods and Rules

Extra Information

1. 250/260 Information
   1. Ultra 250 Recalls and Tech Info from Kawasaki

1. 300/310 Information
   1. 2012 vs. 2013 vs. 2014 Ultra LX changes?
   2. 2013 Ultra 300X & LX Improvements
   3. 100 Hour Ultra 300x - Owners Experience

Hope that helps y'all out, I will try to keep this up to date. If you have something you want added or altered please send me a message and I will do so. I also would like to remind everyone now that most/all of this information is in the Kawasaki Tech Tips and Info section and it also where things like instructions, guides, and generally important recurring information should be posted. If you have something to offer, post it up and if its good, I will sticky it and make it a part of this. I am also looking for reviews and opinions on parts, mods, and general reviews of our craft.

Remember, this section is only as good as what we share and your experiences can help others learn or not make mistakes.

Sean

[SSGViper]

Nice work! I vote to make this a Sticky for this forum.

[smokeysevin]

Nice work! I vote to make this a Sticky for this forum.

Its a work in progress. Im picking up lunch right now before I get the thread links all named so you dont need to click through everything to see what it is.

I dont have an ultra that I do maintenance on regularly enough to write a troubleshooting guide for like I did for the 15f but I can compile stuff together in a thread if yall help me out.

Sean

[The Rooster]

Nice work Sean. Lot of effort getting all this together in one spot. When are you doing this for the Yamaha guys ???

[smokeysevin]

Nice work Sean. Lot of effort getting all this together in one spot. When are you doing this for the Yamaha guys ???

give me something to play on with a yamaha badge and I'll come over to play for a bit

Sean

[jetdave56]

Nice work Sean..
Heard and read a lot about the late Skip Holmes,he wasn't afraid to "push the envelope" on this ski in its early days..

He wasn't afraid to fail and come back to make it right!

[smokeysevin]

Nice work Sean..
Heard and read a lot about the late Skip Holmes,he wasn't afraid to "push the envelope" on this ski in its early days..

He wasn't afraid to fail and come back to make it right!

I have some of your stuff in there too

Sean

[Green Hulk]

Incredible work Sean. Thanks so much for taking the time to do this!

[smokeysevin]

Incredible work Sean. Thanks so much for taking the time to do this!

Thanks for supporting us and giving everyone a place to put it!

Sean

[devils ride 250]

Nice work!! Thanks fir taking time out to do this. Now that you put this here it feels like it should have always been here. Will help a lot of people including me

[john belton]

Very nicely done Sean; and your timing is perfect. KaruJet Offshore race is right around the corner. The Ultras have been getting some competition lately from the YAM Turbos in general Endurance events. But KaruJet is in the open ocean . . . I think the Ultras will still hold their own in these waters.

I think it would be good to have an Endurance Racing Results tab on your new thread. This is where the Ultra shines and deserves good mention. JB

[Aquaholic6801]

Skip was a good guy.....

[smokeysevin]

Very nicely done Sean; and your timing is perfect. KaruJet Offshore race is right around the corner. The Ultras have been getting some competition lately from the YAM Turbos in general Endurance events. But KaruJet is in the open ocean . . . I think the Ultras will still hold their own in these waters.

I think it would be good to have an Endurance Racing Results tab on your new thread. This is where the Ultra shines and deserves good mention. JB

Ill get something in the works.

Sean

[Oheezy404]

Thanks for your time in posting these steps and pics. Your time should help out others like myself...

[Aquaholic6801]

Sean, maybe you can see if you can dig up some of my old threads that were hidden a while back?