Seasonal Maintenance Checklist for Your Yanmar 8LV370

Date September 25, 2024
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Seasonal Maintenance Checklist for Your Yanmar 8LV370

Yanmar 8LV370 Seasonal Maintenance Checklist – Where to Purchase It Too!

As far as sea performance and reliability go, the Yanmar 8LV370 is quite possibly one of the most reliable and robust diesel motors you could possibly locate in its category. If you cruise on the weekends, are a serious fisherman, or own a luxury yacht, your motor must be in top shape at any time of the year. That is where seasonal maintenance comes in. Seasonal Maintenance Checklist for Your Yanmar 8LV370

Along the way in this guide, we will take you through a thorough seasonal maintenance routine for the Yanmar 8LV370. We’ll also give some tips on how to have your engine back in as-good-as-new condition when you first bought it and why buying this machine is an investment in performance and no hassle.

And yes — we do sell the Yanmar 8LV370 engine, so if you want one, you’re already here.

1. What is the Yanmar 8LV370?

Prior to diving into the maintenance guide, let’s briefly discuss what makes the Yanmar 8LV370 such a sought-after engine in the marine market.

🔧 Engine Specifications:

FeatureDetail
Engine ModelYanmar 8LV370
TypeV8 90° 4-stroke, water-cooled diesel
Displacement4.46 L
Maximum Output370 mhp (272 kW) @ 3800 rpm
AspirationTwin Turbocharged and Intercooled
Fuel SystemCommon Rail Direct Injection
Weight (without gear)Approx. 450 kg (992 lbs)
Emission ComplianceEPA Tier 3, EU RCD II
ControlsElectronic with CAN-BUS
Compatible DrivesInboard, ZT370 sterndrive

Yanmar 8LV370 offers an excellent performance balance of torque, speed, and fuel economy — ideal for recreational boats and commercial applications. Its V8 twin-turbo design gives excellent performance but also results in it being strong and quiet.

Whether you’re repowering your boat or spec’ing your new boat buy, this engine provides un-compromised performance — and yes, we can sell it to you.

2. Seasonal Maintenance Matters

Your boat engine gets a pounding — saltwater, idle time, high RPM usage, and temperature changes. Just like your automobile, it needs regular seasonal maintenance to:

  • Prevent corrosion and wear
  • Enhance fuel efficiency
  • Prevent expensive repairs
  • Extend engine longevity
  • Enhance safety on the water

Failing to maintain it will lead to loss of performance, a reduced engine life, and even engine failure. By doing the maintenance, your Yanmar 8LV370 will give years of faithful service.

3. Spring Maintenance Checklist – Ready to Launch

Spring is boater’s time to get ready for boating season. Your Yanmar engine has spent all winter in an idle state, so now’s the time to have it fully inspected before placing it in the water.

✅ Spring Engine Checklist:

  • Inspect Fuel System: Hoses, fuel line clamps, and fuel lines for cracks and leaks. Replace filters if needed.
  • Replace Engine Oil & Filter: New filter and fresh oil at start of each season. Yanmar-spec oil to use.
  • Inspect Coolant Level & Condition: Fill or replace if necessary. Replace coolant if older than 2 years.
  • Inspect Belts & Hoses: Inspect for cracking, fraying, or wear.
  • Check Battery & Connections: Clean terminals, check charge, and cables in place.
  • Test Electrical Systems: Inspect gauges, alarms, ignition, and lights.
  • Check Turbochargers: No damage or carbon accumulation.
  • Check Engine Mounts & Alignment
  • Check Exhaust System: For exhaust system blockages or corrosion.

📘 Don’t forget to log your maintenance after these operations are finished.

4. Summer Maintenance Checklist – Peak Performance

Summer is working time for your Yanmar 8LV370. Heat stress and prolonged cruising tire it out. A mid-season maintenance will have it purring nicely.

✅ Summer Engine Checklist:

  • Check Air Filter: Clean or replace if dirty with salt or debris.
  • Check Fluid Levels Weekly: Oil, coolant, transmission fluid.
  • Check Temperature Gauge: Monitor for overheat.
  • Check for Leaks: Check bilge for oil or coolant leak.
  • Fuel Additives: Use marine fuel additives to avoid algae formation on fuel tank.
  • Clean Engine Exterior: Hose with fresh water to avoid corrosion.
  • Run Engine Diagnostics (Optional): If loss of performance is evident.

⚠️ Be aware of unusual noise or vibration — they are warning signs.

5. Fall Maintenance Checklist – Off-Season Ready

Fall is an ideal time to prepare your home for winter and do your deep clean. Unless you will be using your boat this winter, now is the time to winterize your Yanmar engine.

✅ Fall Engine Checklist:

  • Flush Cooling System: Drain salt and sediment with fresh water.
  • Stabilize Fuel System: Stabilize to prevent fuel breakdown.
  • Change Oil & Filter: Corrosion of engine components will be caused by dirty used oil.
  • Fog the Engine: Fog cylinders with fogging oil (see Yanmar manual for procedure).
  • Drain Water from System: Drain all water out to prevent freeze damage.
  • Disconnect Battery: Dry storage with trickle charger.

🚫 Never let water remain in the engine during freezing temperature. It will cause major damage.

6. Winter Maintenance Checklist – Storage & Protection

If your boat is in storage over winter, protecting Yanmar 8LV370 is important to prevent corrosion, fuel gelling, and battery drain due to bad weather.

✅ Winter Storage Tips:

  • Cover the Engine: Cover with a breathable cover to avoid condensation.
  • Protect Engine Components: Spray anti-corrosive spray on metal components.
  • Check Engine Monthly: Inspect for water damage or critter damage.
  • Keep Vents Clear: Keep mold or mildew from building up.
  • Label Your Battery: So you won’t forget it’s charged and ready to roll come spring time.

7. Year-Round Engine Health Tips

  • Use Genuine Yanmar Parts: Use Yanmar-approved filters, belts, and lubricants at all times.
  • Follow Manufacturer Intervals: Consult the Yanmar 8LV370 owner’s manual for scheduled maintenance intervals.
  • Record Everything: Have a record of maintenance for resale and warranty benefits.
  • Use Certified Technicians: Professional maintenance keeps you under warranty and avoids expensive mistakes.

8. Where to Buy the Yanmar 8LV370

Want a Yanmar 8LV370 engine? You’re in the right place.

We’re a licensed dealer of genuine Yanmar marine engines, including the 8LV370. Restoring a retired engine or acquiring a new boat? This V8 diesel is ideal for performance, reliability, and fuel efficiency.

✅ Why Buy From Us?

  • Fair prices
  • Timely shipping
  • Genuine Yanmar parts
  • Individualized support
  • Installation service (available in some areas)

Looking to upgrade your boat? Call now to order or get a quote. We will help you get the proper Yanmar 8LV370 for you.

9. Final Thoughts – Trust Yanmar, Care with Confidence

The Yanmar 8LV370 is more than an engine, it’s the lifeblood of your boat. Taking care of it year after year is smooth cruising, better gas mileage, and confidence on the water.

By holding the engine to this annual schedule, you will extend the life of the engine and skip the aggravation of mid-season failure. As a weathered commander or Saturday explorer, the Yanmar 8LV370 will do its job — and with maintenance, it will continue doing so for years to come.

❓ Need Help or Want to Buy?

We don’t just talk about engines — we sell them. Call us today and have the Yanmar 8LV370 installed, delivered, and ready to use.

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