Engine Timing Belt – Fits Yamaha F6/F8/T8/F9.9F/T9.9F 4-Stroke Outboards

Engine Timing Belt – Fits Yamaha F6/F8/T8/F9.9F/T9.9F 4-Stroke Outboards

This engine timing belt is designed for Yamaha 4-stroke outboards from 6 to 9.9 HP. It is a direct-fit replacement for F6, F8, T8, F9.9F, and T9.9F models manufactured between 2001 and 2008, ensuring precise synchronization between the crankshaft and camshaft for reliable engine performance.

This part directly replaces Yamaha OEM part numbers 68T-46241-00-00 and 60R-G6241-00-00, as well as Sierra Marine part 18-15138.

• Engineered as a direct OEM replacement for straightforward installation.
• Constructed from durable, reinforced rubber to withstand engine heat and stress.
• Package includes one (1) engine timing belt.

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 Engine Timing Belt (Replaces 68T-46241-00-00)

Installation Guide

1. Disconnect the battery and remove the engine cowling to access the engine block.
2. Locate and remove the timing belt cover, which is typically secured by several bolts.
3. Carefully rotate the crankshaft to align the timing marks on the camshaft and crankshaft pulleys with the marks on the engine block. This step is critical for maintaining engine timing.
4. Loosen the belt tensioner bolt to release pressure on the old timing belt.
5. Slide the old belt off the pulleys, taking care not to disturb the pulley positions.
6. Install the new timing belt, ensuring it is properly seated on all gears and pulleys and that the timing marks remain perfectly aligned.
7. Apply correct tension to the new belt by adjusting the tensioner. Manually rotate the engine two full turns to confirm the timing marks are still aligned.
8. Reinstall the timing belt cover and securely tighten all bolts.
9. Reconnect the battery, start the engine, and listen for smooth operation.

Troubleshooting & FAQ

How can I confirm this timing belt fits my Yamaha engine?
Please check the 'Compatible Engine Models' table on this page. Match your engine's model, horsepower, and year range. It's also critical to cross-reference your existing part number with those listed in the 'Part Number Cross-Reference' section to ensure a perfect match.

How often should I replace the engine timing belt?
We recommend following the manufacturer's service schedule. For this belt, replacing it every 1000 hours or 5 years of operation, whichever comes first, is advised to prevent catastrophic engine damage from belt failure.

What are the signs of a failing timing belt?
Common symptoms include a persistent ticking noise coming from the engine, difficulty starting, rough idling, engine misfires, or visible signs of wear on the belt itself, such as cracks, fraying, or glazing.

OEM vs. Aftermarket?
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.

How fast do you ship and how much does it cost?
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.

What is your warranty and return policy?
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.