SKU: 8266870670

61N-W0078-01 Water Pump Impeller Kit for Yamaha C30 F25 F25A F25B | JLM Marine

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Description

61N-W0078-01 Water Pump Impeller Kit for Yamaha C30 F25 F25A F25B | JLM MarineWater Pump Impeller Kit Fits Yamaha 2 Stroke 30HP & 4 Stroke 25HP Outboards This water pump impeller kit is engineered for reliable cooling performance on Yamaha 2 stroke 30HP and 4 stroke 25HP outboard engines. Designed to fit C30 (1993 97), F25 (1998 05), F25A (2009 17), and F25B (2012 17) models, this kit ensures your engine maintains optimal operating temperature. Direct replacement for Yamaha OEM part numbers 61N W0078 00, 61N W0078 0A, 61N W0078

Water Pump Impeller Kit – Fits Yamaha 2-Stroke 30HP & 4-Stroke 25HP Outboards

This water pump impeller kit is engineered for reliable cooling performance on Yamaha 2-stroke 30HP and 4-stroke 25HP outboard engines. Designed to fit C30 (1993-97), F25 (1998-05), F25A (2009-17), and F25B (2012-17) models, this kit ensures your engine maintains optimal operating temperature.

Direct replacement for Yamaha OEM part numbers 61N-W0078-00, 61N-W0078-0A, 61N-W0078-01, 61N-W0078-10, 61N-W0078-14, and Sierra Marine 18-3432. This aftermarket kit delivers dependable cooling system performance at a competitive price.

  • Complete kit includes impeller, key, O-ring, and water seal
  • Compatible with both 2-stroke and 4-stroke Yamaha engines
  • Essential maintenance component for preventing engine overheating

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Yamaha 61N-W0078-00
Yamaha 61N-W0078-0A
Yamaha 61N-W0078-01
Yamaha 61N-W0078-10
Yamaha 61N-W0078-14
Sierra Marine 18-3432

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here's a guide to help you identify your engine's serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Brand Model Rated HP Stroke Years
Yamaha C30 30HP 2-Stroke 1993-1997
Yamaha F25 25HP 4-Stroke 1998-2005
Yamaha F25A 25HP 4-Stroke 2009-2017
Yamaha F25B 25HP 4-Stroke 2012-2017

Technical Specifications

Specification Value
OEM Number 61N-W0078-01
Product Type Water Pump Impeller Kit
Application Yamaha 2-Stroke 30HP & 4-Stroke 25HP Outboards

Package Contents

This complete water pump impeller kit includes the following components:

  • 1 × Water Pump Impeller (6H4-44352-02-00)
  • 1 × Key, Impeller (90280-03M03-00)
  • 1 × O-Ring (93210-45161-00)
  • 1 × Seal, Water (6L2-44367-00-00)

Installation Guide

  1. Disconnect the fuel line and remove the engine cowling to access the lower unit. Ensure the engine is cool before beginning work.
  2. Remove the propeller and drain the lower unit gear oil completely.
  3. Unbolt and separate the lower unit from the midsection. Take care not to damage the driveshaft or water tube.
  4. Remove the water pump housing and take out the old impeller, noting its orientation.
  5. Clean all surfaces thoroughly and inspect the pump housing and plate for wear or scoring.
  6. Install the new O-ring and water seal into their designated grooves, applying a light coat of marine grease.
  7. Insert the impeller key into the driveshaft slot.
  8. Lubricate the new impeller blades with glycerin or dish soap, then install it with the blades oriented in the correct rotation direction.
  9. Reassemble the pump housing, ensuring the water tube seats properly into the grommet.
  10. Reattach the lower unit to the midsection, aligning the driveshaft and water tube carefully.
  11. Refill the lower unit with fresh gear oil and reinstall the propeller.
  12. Test the water pump by running the engine with a flusher or in a test tank, confirming strong water flow from the telltale.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my Yamaha engine?
A: Cross-reference your engine model and year with the compatibility table above. Verify your current impeller kit part number matches one of the OEM numbers listed (61N-W0078-00, 61N-W0078-0A, 61N-W0078-01, 61N-W0078-10, or 61N-W0078-14).

Q: How often should I replace my water pump impeller?
A: Yamaha recommends replacing the impeller every 2-3 years or 200-300 hours of operation, whichever comes first. Replace immediately if you notice reduced water flow, overheating, or visible blade damage.

Q: What are the signs of a failing water pump impeller?
A: Common symptoms include weak or no water stream from the telltale hole, engine overheating warnings, steam from the engine, or visible cracks and missing pieces on the impeller blades.

Q: Can I install this kit myself or do I need a mechanic?
A: If you have mechanical experience and the proper tools, you can install this kit yourself following the guide above. However, if you're unfamiliar with lower unit disassembly, professional installation is recommended to avoid damage.

Q: Is this an OEM or aftermarket impeller kit?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 8266870670

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4.4 ★★★★★
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C
Verified Purchase
C. Tucker
Alexandria, US
★★★★★ 5
Presentations with the audience in mind
Format: Paperback
I bought this hoping it would be a guide to creating Big-3 Consulting-style slides with fancy diagrams and eye-catching graphic design. That is not what this book is. Instead, this book is about how to tell a story with slides, using the framework of a five act drama. With this method forcing you to focus on who your audience is, what they need to know, and how much time you have to tell them (as opposed to trying to shoehorn everything you know about a subject into your pitch) you end up with a presentation that finishes on time for intelligent questions from an engaged audience. Since buying the book I have given several well-received presentations using precisely that technique. With no words on screen there is no temptation to just read the bullet points, and the audience cannot think ahead of you and must instead listen to what you're saying. You have to know your material to use this method, but when you succeed your audience will be impressed with your knowledge of the subject matter. (If you're working in a group project and want to Blue Falcon a non-contributing teammate, try giving them a few of these slides to speak to.) The recommended slide format is one picture and one headline per slide, with no bullet points at all. The book suggests creating Notes Pages with an outline of your talk as a handout, since the slides themselves don't stand alone. (And that's a good thing--visual aids are supposed to *augment* the presentation, not *be* the presentation.) In conclusion, this book might not be for everyone, but it was exactly what I needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 15, 2018
M
Verified Purchase
mrliteral
Bozeman, US
★★★★★ 4
An outsider's view
Format: Paperback
When it comes to Cliff Atkinson's Beyond Bullet Points, I am a bit of an outsider. I don't read many computer books and, while I have worked with PowerPoint, my presentations are very simple. Since I admittedly use my share of bullet points in these presentations, I thought learning about an alternative approach would be useful. And while there are definite benefits to reading this book, it may not be perfect for everyone. Many people use bullet points in their PowerPoint presentations; this can be a great way to organize thoughts, but Atkinson has a difference approach. Essentially, the Beyond Bullet Points method treats presentations as stories told in three "acts." Act One develops the story, Act Two develops the action and Act Three frames the resolution. Each act is broken down into scenes which provide the details. The first portion of the book explains how to work with each act; the second portion deals with the evolution from initial outline to final presentation. This book assumes a certain amount of PowerPoint knowledge; if you want to learn about the application, this is not the place to start (on the other hand, you don't need to be a PowerPoint expert). One of the nicest things about Atkinson's approach is the way he allows presentations to be pared down to fit the time frame required: his method is designed best with a 45 minute presentation, but it can be easily compressed to a 15 minute or even 5 minute presentation. Another nice thing is that he has a website that readers can access that provides some helpful materials such as template documents. On the other hand, Atkinson treats the issue of bullet points/no bullet points as something of a black-and-white issue. He doesn't really acknowledge that there may be a middle ground where bullet points should be used in certain situations, perhaps even in conjunction with his approach. I think it's more appropriate to view the Beyond Bullet Points as an alternative approach to PowerPoint presentations, not the ONLY approach. Atkinson's writing style is straightforward, and like many computer books, a little dry. But as stated earlier, I am reading this book with something of an outsider's view. This is a good book, but Atkinson's inability to look beyond his own approach keeps it from being a five-star work. Nonetheless, if you do a lot of PowerPoint presentations, there is enough useful material in here to merit a read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 16, 2006
A
Verified Purchase
Arthur E. Williams
Whiting, US
★★★★★ 5
A Refreshing Approach to Presentations
Format: Paperback
I ran across this book while researching a college workshop on perfecting presentation, dealing with public speaking and effective use of PowerPoint. As one who has suffered through numerous electronic slides that did little or nothing to augment the speaker's efforts, I was delighted to see this fresh and innovative approach. I believe this process works best, however, when one's speech is primarily persuasive in nature. Although these ideas helped me set up a strong introduction and conclusion, in a recent lecture I resorted to bullet points for the material I felt the students had to master. Perhaps as I get more used to Atkinson's technique, I'll better about using it in lecture. However, the business applications seem quite worthwhile. My students' workshop presentations that used his techniques were highly engaging. I highly recommend this book and the supporting web site.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 24, 2006
D
Verified Purchase
db
Lowell, US
★★★★★ 1
Simplistic and Inappropriate
Format: Paperback
I was hoping this book would provide insights into how to present complex information in a more comprehensible, useful format, using PowerPoint as the tool. Instead, the overall gist of this book is that presentations should be "dumbed down" as much as possible. The theme the author presents is that presentations should be story based. This is reasonable. However, the method the author recommends is that essentially *all* meaningful, complex (or, as the author prefers "boring") content be removed from the presentation. Presentations then become nothing more than catchy headlines and colorful graphics. All content should be in the presenter's notes (not typically to be provided). This is juvenile and useless and frankly reflects a complete lack of understanding of how presentations are made in a complex business environment.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2007
S
Verified Purchase
SteelBlue
Chelsea, US
★★★★★ 3
On the right track
Format: Paperback
This book is a good introduction about how to use story-telling techniques in PowerPoint presentations. There are some good ideas here that you won't find in technical manuals. If you don't know film techniques these will be eye-opening. But the book could have been much stronger if it were to push these concepts to the next level. I saw a PowerPoint presentation with Andy Goodman, who teaches more or less the same thing, and his presentation nailed these concepts more cleanly than this book does. But again, this book is definitely worth checking out if you haven't studied storytelling before.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 2, 2005

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