Sierra 18-6506

Upgrade Your Mercury Outboard with Reliable Rewind Starter Performance

Keep your boat ready for the water with the Sierra 18-6506 rewind spring, a precision-engineered replacement designed specifically for Mercury outboard engines. Matching the original equipment manufacturer (OEM) specifications of part 24-29340T02, this component ensures smooth, dependable starter operation every time you hit the ignition. Whether you're dealing with a sluggish pull or complete failure in the recoil mechanism, this spring restores the snappy retraction and reliable engagement boaters demand.

Built from high-tensile materials resistant to corrosion and fatigue, the Sierra 18-6506 withstands the harsh marine environment—saltwater spray, humidity, and constant mechanical stress. It's not just a part; it's peace of mind for weekend warriors and professional anglers who can't afford downtime on the water.

Perfect Fit for Popular Mercury Models

This rewind spring fits a wide range of Mercury 4-stroke outboards, including those in the 4hp to 25hp range commonly found on small fishing boats, dinghies, and pontoons. It's engineered to OEM tolerances, so installation is straightforward with no modifications needed. Common applications include models from the early 2000s through recent years, making it a go-to for restoring vintage engines or maintaining newer ones.

• Direct replacement for OEM 24-29340T02
• Compatible with select Mercury 4-25hp outboards
• Meets or exceeds factory specifications for tension and durability

Key Features That Set Sierra Apart

Sierra's commitment to quality shines through in every detail of the 18-6506. Unlike generic aftermarket parts that stretch prematurely or snap under load, this spring delivers consistent performance backed by rigorous testing.

Simple DIY Installation Guide

Replacing your Mercury rewind spring doesn't require a marine mechanic. With basic tools—a screwdriver set, pliers, and maybe a starter pull tool—you can have it done in under an hour. Here's a quick step-by-step:

1. Disconnect the battery and remove the engine cowling for access.
2. Remove the starter assembly by releasing the retaining clips or screws.
3. Carefully unwind and extract the old spring, noting its orientation.
4. Install the new Sierra 18-6506 by winding it tightly in the same direction.
5. Reassemble, test the pull cord retraction, and reinstall the cowling.

Pro Tip: Lubricate the spring lightly with marine-grade grease during installation to reduce friction and extend life. Always wear safety glasses—these springs store serious energy!

Maintenance Tips to Maximize Longevity

To get the most out of your Sierra 18-6506, incorporate these habits into your routine engine checks:

• Inspect the recoil starter annually or every 50 hours of use for wear.
• Rinse with freshwater after saltwater exposure to prevent buildup.
• Avoid over-pulling the cord, which can prematurely fatigue the spring.
• Store your outboard in a dry, upright position to minimize tension on the mechanism.

Spotting issues early—like uneven retraction or grinding noises—saves you from bigger repairs. This spring's robust design typically outlasts OEM parts when properly maintained.

Why Choose Sierra for Your Marine Engine Parts?

Sierra has built a reputation among boat owners for delivering OEM-quality parts at a fraction of dealer prices, without skimping on reliability. The 18-6506 exemplifies this: it's tested to handle real-world abuse, from choppy bays to calm lakes. Boaters rave about the crisp starter action it brings back, often noting it feels better than new. Invest in Sierra for parts that perform when it counts.