Water Pump Impeller Repair Kit – Fits Yamaha 60-90 HP 2-Stroke Outboards (Replaces 692-W0078-02-00)

Water Pump Impeller Repair Kit – Fits Yamaha 60-90 HP 2-Stroke Outboards (Replaces 692-W0078-02-00)

This water pump impeller repair kit is designed for a wide range of Yamaha 2-Stroke outboards from 60 to 90 HP, manufactured between 1984 and 2009. It provides a reliable solution for maintaining your engine’s cooling system, covering models such as the C75, P75, C80, C85, CV85, and C90 series.

This kit serves as a direct replacement for multiple OEM and aftermarket part numbers, ensuring broad compatibility for a hassle-free installation.

• Installation Method: Direct replacement for your original water pump components.
• Fuel Compatibility: Designed for 2-Stroke gasoline outboards.
• Complete Kit: Includes the impeller, gaskets, an insert cartridge, and all necessary hardware for a full repair.

Part Number Cross-Reference

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

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.

Technical Specifications

Package Contents

• 1 x Water Pump Impeller (688-44352-03-00)
• 1 x Woodruff Key Driveshaft (90280-04M04-00)
• 1 x Cartridge Insert (688-44322-00-00)
• 1 x Cartridge Outer Plate (688-44323-00-00)
• 1 x Cartridge Gasket (688-44324-A0-00)
• 1 x Water Pump Gasket (688-44315-A0-00)
• 1 x Water Pump Gasket (688-44316-A0-00)
• 1 x O-Ring (93210-46044-00)
• 2 x Bolt With Washer (90119-08M16-00)
• 2 x Bolt With Washer (90119-08M13-00)

Installation Guide

Professional installation is highly recommended. The following are general steps and may not be specific to your exact model. Always consult your service manual for detailed instructions and torque specifications.

1. Safety First: Disconnect the negative battery cable before beginning work.
2. Access the Lower Unit: Drain the gearcase oil from the lower unit.
3. Remove Lower Unit: Unbolt and carefully remove the lower unit from the outboard's midsection.
4. Disassemble Pump: Remove the bolts securing the water pump housing and slide the housing off the driveshaft.
5. Remove Old Components: Take note of the order of components. Remove the old impeller, Woodruff key, wear plate, and gaskets.
6. Clean Surfaces: Thoroughly clean all mating surfaces, removing any old gasket material or debris.
7. Install New Components: Install the new gaskets, plate, Woodruff key, and impeller. Ensure the impeller fins are oriented correctly (turning the driveshaft clockwise while pushing down can help).
8. Reassemble Pump: Apply a light coat of marine grease or soap to the inside of the new housing and slide it down over the impeller. Secure it with the bolts.
9. Reinstall Lower Unit: Guide the lower unit back into place, ensuring the driveshaft, shift shaft, and water tube align properly. Torque bolts to spec.
10. Refill and Test: Refill the gearcase with fresh oil. Reconnect the battery, supply water to the engine using flushing muffs, and start the engine to check for proper water pump operation (a steady stream from the tell-tale).

Troubleshooting & FAQ

Q: How do I confirm this kit fits my engine?

A: The best way is to cross-reference your engine's model and year with the "Compatible Engine Models" table on this page. You can also verify by matching the OEM part number from your service manual or existing part with the numbers in our "Part Number Cross-Reference" list.

Q: What are the symptoms of a failing water pump impeller?

A: Common signs include the engine overheating at low speeds or idle, a weak or non-existent water stream from the "tell-tale" outlet, and a dry, cracked, or brittle impeller found during inspection. Failure to replace a worn impeller can lead to severe engine damage.

Q: How often should I replace the water pump impeller?

A: For preventative maintenance, it is recommended to inspect and/or replace the impeller every one to two years, or every 100-200 hours of operation. This interval may be shorter if you operate in sandy, silty, or saltwater conditions.

Q: Does this kit include the water pump housing?

A: No, this is an impeller repair kit. It includes the impeller, gaskets, plates, and hardware needed for a standard replacement. The housing is sold separately. Please refer to the "Package Contents" list for a complete inventory of what is included.

Q: OEM vs. Aftermarket?

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.