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6E5-24410-00 6E5-24410-01 6E5-24410-02 6E5-24410-03
PREMARINE
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1. Technical Specifications
| Parameter | Specification / Detail |
| Component Type | Crankcase Pulse-Driven Diaphragm Fuel Pump Assembly |
| OEM & Interchange Part Numbers | 6E5-24410-00-00 / 6E5-24410-00 / 6E5-24410-01 / 6E5-24410-02 / 6E5-24410-03 / 6E5-24410-04 / 6E5-24410-10 |
| Installation Location | Powerhead crankcase side wall (Mating directly over the crankcase pulse vacuum port) |
| Operating Principle | Pneumatic reciprocating pulse diaphragm action (Spark-free, non-electrical) |
| Engine Platform | Inline-3, Inline-4, V4 (90°), and V6 (60°/90°) Marine Outboard Platforms |
| Horsepower Range | Yamaha 115HP, 130HP, 150HP, 175HP, 200HP, 225HP (2-stroke & select early 4-stroke models) |
| Fuel Port Barb Size | Standard 5/16" (approx. 8mm) barbed inlet and outlet fuel hose fittings |
| Material Composition | Marine-grade die-cast aluminum casing with ethanol-resistant fluoropolymer/NBR diaphragm pack |
2. Key Features & Functionality
Spark-Free Pulse Actuation: Operates entirely from crankcase alternating pressure differentials, eliminating electrical wires, brushes, and arcing hazards inside enclosed engine cowlings.
Ethanol-Resistant Diaphragm Pack: Internal diaphragms and one-way umbrella flappers are formulated from reinforced elastomers resistant to alcohol drying, swelling, and thermal fatigue from modern E10/E15 fuel blends.
Fast-Response Flapper Check Valves: Precision check valves eliminate line backflow and siphon drain-back, ensuring immediate line priming and high-volume delivery across changing engine RPMs.
Direct OEM Pattern Fitment: Rear pulse port O-ring groove, mounting bolt pitch, and barb orientations conform strictly to factory engineering drawings for a quick, leak-free bolt-on replacement.
3. Compatible Models
Widely compatible with Yamaha mid-to-high horsepower outboard engines (note: V4 and V6 platforms typically utilize two of these fuel pumps installed in parallel):
Yamaha 2-Stroke V4 / V6 Series: 115HP (115B, 115C), 130HP (130B), 150HP (150F, 150G), 175HP, 200HP (200F, 200G), 225HP carbureted engines
Yamaha 2-Stroke Multi-Cylinder Models: Select commercial and multi-carburetor setups across 75HP–90HP and higher configurations
Clone Engines: Compatible with Parsun, Hidea, Powertec, and other outboard brands utilizing the Yamaha 6E5 pulse-driven fuel delivery layout
4. Aftermarket & Brand Compatibility
OEM Brand Fitment:
Yamaha Marine: Engineered for genuine Yamaha 115HP through 225HP low-pressure pulse-driven delivery systems.
PREMARINE Brand Aftermarket Replacement:
PREMARINE Quality Standard: PREMARINE specializes in high-reliability marine fuel systems, diaphragm pumps, and carburetor overhaul hardware. This fuel pump is manufactured using automated high-pressure die-casting and precision vacuum leak-test lines.
Direct OEM-Level Performance: Diaphragm stroke resilience, valve opening crack pressure, and casting burst strength meet or exceed OEM specifications, serving as the premier cost-effective choice for resolving fuel starvation, bogging, or crankcase fuel contamination.
5. Common Symptoms & Troubleshooting
High-RPM Fuel Starvation / Engine Bogs at Full Throttle (Runs Normally when Squeezing Primer Bulb):
Cause: Stiffened, stretched, or fatigued internal rubber diaphragm, or debris trapped beneath one-way check valves restricting flow volume.
Troubleshooting: Manually squeeze the fuel primer bulb while the engine begins to bog down under load; if engine power immediately returns, the mechanical fuel pump is failing and requires replacement.
Fuel Flooding Crankcase / Heavy Smoke and Fouled Spark Plugs at Idle:
Cause: A ruptured internal diaphragm allows pressurized raw fuel to be sucked directly through the pulse port into the crankcase, causing extreme rich fouling on that cylinder bank.
Troubleshooting: Unbolt the pump from the crankcase with fuel lines attached; pump the manual primer bulb firmly and inspect the pulse hole on the rear of the pump. If gasoline squirts out, the diaphragm is blown and the pump must be replaced immediately.
External Fuel Seepage Along Pump Seams:
Cause: Loose casing assembly screws or degraded intermediate perimeter sealing gaskets.
Troubleshooting: Inspect assembly torque; if fuel continues to weep from casting seams, replace the complete assembly to eliminate hazardous engine bay fire risks.
OEM Part Numbers
Compatible OEM references include:
6E5-24410-00
6E5-24410-01
6E5-24410-02
6E5-24410-03
Compatible Engine Models
This Fuel Pump Assy is primarily designed for:
2-Stroke 115/130/150/175/200/225HP
If you are unsure about compatibility, please provide your engine model number or identification plate for verification before ordering.
Applications
This Fuel Pump Assy is commonly used for:
Outboard engine repair
Engine rebuilding projects
Marine maintenance workshops
Boat fleet maintenance
Commercial fishing vessels
Recreational boats
Marine spare parts distribution
