Sierra 18-7058 7058 Carburetor Rebuild Kit - Yamaha
Sierra 18-7058 7058 Carburetor Rebuild Kit - Yamaha — Product description
Revitalizing your Yamaha outboard's performance starts with a reliable carburetor rebuild. The Sierra 18-7058 kit delivers precision-engineered components designed to restore smooth fuel delivery and throttle response, tackling common issues like rough idling, hesitation during acceleration, or poor fuel efficiency that plague aging marine carbs.
Crafted for boaters who demand durability in harsh saltwater environments, this rebuild kit combines high-grade gaskets, diaphragms, needle valves, and seats to match original equipment standards. Whether you're prepping for a weekend fishing trip or extended offshore adventures, it ensures your engine runs cleaner and more efficiently.
What's Included in the Sierra 18-7058 Kit
This comprehensive rebuild set provides everything needed for a thorough overhaul, eliminating the hassle of sourcing individual parts. Key components feature:
- Primary and secondary gaskets for leak-free sealing
- Float bowl gasket to prevent fuel leaks
- Needle and seat assemblies for precise fuel metering
- Diaphragms engineered for flexibility and longevity
- Various O-rings, seals, and screws for complete reassembly
- Idle mixture screws to fine-tune low-speed performance
Each part undergoes rigorous testing to withstand ethanol-blended fuels, a common culprit in carb degradation for modern outboards.
Why Choose This Carburetor Rebuild Kit for Your Yamaha
Opting for the Sierra 18-7058 means investing in proven reliability without compromising on quality. Boaters report noticeable improvements in engine responsiveness after installation, often extending the life of their carburetor body and reducing long-term maintenance costs.
Key advantages include:
- Restored Power and Efficiency: Eliminates varnish buildup and sticky components for optimal air-fuel mixture.
- Easy Compatibility: Direct fit for specified Yamaha applications, minimizing downtime.
- Corrosion Resistance: Materials selected to combat marine conditions, from salt spray to humidity.
- Cost-Effective Repair: Far more economical than full carb replacement while matching OEM performance.
Ideal for DIY enthusiasts or professional mechanics, it supports engines that have seen seasons of hard use, breathing new life into your propulsion system.
Step-by-Step Installation Tips
A successful rebuild hinges on preparation and precision. Follow these pro tips to get your Yamaha purring again:
- Prep Work: Disconnect the fuel line, battery, and remove the carburetor from the engine. Clean the body thoroughly with carb cleaner to remove residue.
- Disassembly: Note the position of components before removing. Inspect for wear on jets and passages.
- Rebuild: Install new diaphragms carefully, ensuring proper orientation. Lubricate O-rings lightly with marine grease.
- Reassembly: Torque screws to spec and adjust float height per Yamaha guidelines.
- Testing: Bench-test for leaks, then reinstall and run the engine through RPM ranges. Fine-tune idle as needed.
Pro Tip: Always use fresh fuel with stabilizer post-rebuild to prevent future gumming. Expect the job to take 1-2 hours with basic tools.
Ongoing Maintenance for Peak Carb Performance
To maximize the lifespan of your rebuild, adopt these habits:
- Run the engine regularly to circulate fuel and prevent stagnation.
- Winterize properly by draining carbs or adding stabilizer.
- Monitor for symptoms like black smoke or surging, indicating early issues.
- Flush with carb-safe cleaners annually during service.
These steps keep your Yamaha outboard reliable season after season, saving you from unexpected trailering headaches.
Frequently Asked Questions
What engines is the Sierra 18-7058 rebuild kit compatible with?
This kit fits select Yamaha outboard models. Consult Sierra's catalog or your engine's service manual for exact fitment to ensure compatibility.
Does this kit include all gaskets and seals needed?
Yes, it provides a full set of gaskets, seals, diaphragms, and related hardware for a complete carburetor overhaul.
Can I install this kit myself without special tools?
Absolutely—basic hand tools like screwdrivers, pliers, and a carb cleaner suffice. No specialized equipment required for most users.
Will this kit fix rough idling on my Yamaha?
Common causes like worn diaphragms or faulty needle valves are addressed, often resolving idle issues. If problems persist, check fuel pump or linkages.
How does ethanol fuel affect carburetors?
Ethanol attracts moisture, leading to corrosion and varnish. The kit's ethanol-resistant materials help mitigate this for longer service intervals.
What's the expected lifespan after rebuilding?
With proper maintenance, expect 2-5 years or more, depending on usage, fuel quality, and storage conditions.
Is this kit better than OEM parts?
It matches OEM specs in fit and function while offering excellent value. Many mechanics prefer it for its consistent quality and availability.
SKU: NVN-4003459
MPN: 18-7058
UPC: 808282312565
Technical specifications
| Brand | Sierra Engine Parts |
| Model | Sierra 18-7058 7058 Carburetor Rebuild Kit - Yamaha |
| SKU / MFR# | 4003459 |
Set product metafields under specs.* to populate this table.
Frequently asked questions
No questions yet. Got one? Drop us a line.
