67F-46241-00 Timing Belt for Yamaha Mercury F75 F80 F90 F100 F115 LF115 | JLM Marine

Timing Belt 67F-46241-00 – Fits Yamaha & Mercury 4-Stroke 75–115 HP Outboards

This aftermarket timing belt is engineered to meet OEM specifications for Yamaha and Mercury 4-stroke outboard engines ranging from 75 to 115 HP. It ensures precise valve timing and reliable performance across a wide range of models from 1999 through 2017, including F75, F80, F90, F100, F115, and LF115 series engines.

Designed as a direct replacement for Yamaha part number 67F-46241-00 and Mercury part number 804145, this timing belt delivers dependable service for routine maintenance or urgent repairs.

• Compatible with both Yamaha and Mercury 4-stroke outboards (75–115 HP)
• Direct replacement for OEM part numbers 67F-46241-00 and 804145
• Essential component for maintaining engine timing and preventing valve damage

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM 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.

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

Technical Specifications

Package Contents

• 1 × Timing Belt (67F-46241-00 / 804145)

Installation Guide

1. Preparation: Disconnect the battery and gather necessary tools (wrenches, screwdrivers, timing marks reference). Ensure the engine is cool before beginning work.
2. Remove Engine Covers: Carefully remove the top and side cowling panels to access the timing belt housing. Label and store all fasteners for reassembly.
3. Locate Timing Marks: Rotate the crankshaft to align the timing marks on the crankshaft and camshaft sprockets. Consult your service manual for exact positions.
4. Remove Old Belt: Loosen the tensioner and carefully slide the old timing belt off the sprockets. Inspect sprockets and tensioner for wear or damage.
5. Install New Belt: Route the new timing belt over the crankshaft sprocket, then the camshaft sprocket(s), ensuring it seats properly in all grooves. Maintain alignment of timing marks throughout installation.
6. Apply Tension: Reinstall or adjust the tensioner according to factory specifications. Check that the belt has proper tension—neither too loose nor too tight.
7. Verify Alignment: Manually rotate the crankshaft two full revolutions and recheck timing marks. They should align perfectly; if not, repeat installation.
8. Reassemble Components: Reinstall the timing cover, cowling panels, and all fasteners. Double-check that no tools or parts are left in the engine compartment.
9. Reconnect Battery & Test: Reconnect the battery, start the engine, and listen for unusual noises. Monitor engine operation for smooth idle and proper performance.

Troubleshooting & FAQ

Q: How do I confirm this timing belt fits my specific engine model?
A: Cross-reference your engine's model and year with the compatibility table above. Verify the OEM part number (67F-46241-00 for Yamaha or 804145 for Mercury) matches your original belt or consult your engine's parts diagram.

Q: How often should I replace the timing belt on my Yamaha or Mercury outboard?
A: Yamaha and Mercury typically recommend timing belt replacement every 1,000 operating hours or every 5–6 years, whichever comes first. Always refer to your engine's service manual for specific intervals and inspect the belt regularly for cracks, fraying, or glazing.

Q: What are the warning signs that my timing belt is failing?
A: Common symptoms include rough idling, misfiring, difficulty starting, unusual ticking or squealing noises from the engine, and visible wear or cracking on the belt. If you notice any of these signs, inspect and replace the belt immediately to avoid valve damage.

Q: Can I install this timing belt myself, or do I need a professional mechanic?
A: Installation requires precise timing mark alignment and proper tensioning. If you have mechanical experience and the correct service manual, DIY installation is possible. However, professional installation is strongly recommended to ensure safety and prevent costly engine damage from misalignment.

Q: What's the difference between this aftermarket timing belt and the OEM version?
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.