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6EK-43880-00 6EK-43880-10-00 6EK-43880-11-00
PREMARINE
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1. Technical Specifications
| Parameter | Specification / Detail |
| Component Type | Marine Power Trim & Tilt Electric Drive Motor Assembly |
| OEM & Interchange Part Numbers | 6EK-43880-00-00 / 6EK-43880-00 / 6EK-43880-10-00 / 6EK-43880-11-00 |
| Installation Location | Transom bracket Power Trim & Tilt hydraulic pump manifold |
| Electrical Rating | Operating Voltage: $12\text{ V}$ DC; 2-Wire Reversible Polarity design |
| Engine Platform | Inline-4 Cylinder 4-Stroke EFI 1.8L / 2.1L Marine Outboard Platforms (6EK / 6FP) |
| Horsepower Range | Yamaha F75, F80, F90, F100, F115 (F115B, F115LB, F90LB, VF90, VF115 VMAX, etc.) |
| Drive Interface | Precision slotted/splined drive coupler shaft with 2-pin sealed connector |
| Ingress Protection | IP67 marine waterproof sealing with heavy-duty fluorocarbon base O-ring |
| Material Composition | Anti-corrosive coated alloy steel housing + dynamic-balanced copper armature |
2. Key Features & Functionality
Reversible Polarity 2-Wire Operation: Operates smoothly in forward and reverse rotation by switching DC polarity via the trim relay harness, providing instant hydraulic directional control.
High Torque Output Under Load: Built with precision-wound high-temperature copper armature coils and high-coercivity permanent field magnets, delivering strong torque to tilt the outboard even against propeller thrust.
Marine Waterproof & Anti-Corrosion Defense: Sealed against salt spray and moisture intrusion with multi-coat epoxy coating and precision O-ring perimeter seating to eliminate corrosion and electrical failure.
Direct Drop-In OEM Fitment: Bolt mounting patterns, drive shaft engagement depth, and electrical wiring match original factory specifications for a seamless replacement onto the hydraulic reservoir manifold.
3. Compatible Models
Primarily compatible with Yamaha 4-stroke 1.8L multi-valve outboard engines:
Yamaha 4-Stroke 1.8L Series: F75 (F75B), F80 (F80C, F80D), F90 (F90B, F90LB), F100 (F100D, F100F), F115 (F115B, F115LB, F115XB)
Yamaha VMAX SHO Series: VF90 (VF90XA/LA), VF115 (VF115XA/LA) performance series
Clone/Platform Applications: Suitable for marine installations utilizing the Yamaha 6EK style hydraulic tilt pump
4. Aftermarket & Brand Compatibility
OEM Brand Fitment:
Yamaha Marine: Engineered for genuine Yamaha 75HP through 115HP (6EK platform) hydraulic power trim and tilt systems.
PREMARINE Brand Aftermarket Replacement:
PREMARINE Quality Standard: PREMARINE specializes in marine hydraulic drive units, trim/tilt motors, hydraulic pumps, and control relays. This motor is manufactured using computer-balanced armatures, silver-copper commutators, and heavy-duty brushes.
Direct OEM-Level Performance: Stall torque, current draw parameters, thermal resistance, and dynamic casing air-tightness meet or exceed OEM specifications, serving as the premier cost-effective choice for replacing corroded, flooded, or worn-out trim motors.
5. Common Symptoms & Troubleshooting
Relay Clicks When Trim Button is Pressed, but Motor Does Not Run:
Cause: Brushes worn past minimum service length, brush springs seized from corrosion, or armature seized from water ingress.
Troubleshooting: Apply $12\text{ V}$ power and ground directly across the motor's blue and green leads using jumper wires; if the motor remains dead or draws excessive sparking amperage without turning, the motor assembly has burned out or seized and requires replacement.
Motor Runs in One Direction Only (Will Tilt Up but Not Down, or Vice Versa):
Cause: Typically a sticking trim relay, but can also stem from an internal brush lead fault within the motor housing.
Troubleshooting: Reverse the positive and negative connections to the motor leads; if the motor now spins in the opposite direction, the issue lies in the relay/switch wiring. If it still fails to reverse, the internal commutator/brush assembly is damaged.
Sluggish Lifting Speed & Motor Housing Runs Dangerously Hot:
Cause: Internal bushing wear causing armature drag, or emulsified hydraulic fluid overloading the drive gear.
Troubleshooting: Check hydraulic fluid condition. Test no-load motor draw separated from the pump; if current draw exceeds normal limits ($>5\text{--}8\text{ A}$ no-load), the internal motor windings or bearings are degraded and require replacement.
OEM Part Numbers
Compatible OEM references include:
6EK-43880-00
6EK-43880-10-00
6EK-43880-11-00
Compatible Engine Models
This Power Trim & Tilt Electric Drive Motor is primarily designed for:
4-Stroke 75/80/90/100/115HP
If you are unsure about compatibility, please provide your engine model number or identification plate for verification before ordering.
Applications
This Power Trim & Tilt Electric Drive Motor 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
