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How much engine oil does Yamaha Outboards F25 20in take?
1.1 L
The cited OEM source lists Engine oil capacity for Yamaha Outboards F25 20in as 1.1 L.
SOURCED MODEL TECHNICAL DATA
Yamaha Outboards F25 20in Oil, Fluid Capacities & Technical Data
Yamaha Outboards F25 20in — Engine oil capacity: 1.1 L · Prop/jet shaft horsepower: 25 hp · Engine displacement: 0.432 L Sources, symptoms, measurements and verification on one page.
Quick answers
What is the power rating of Yamaha Outboards F25 20in?
25 hp
The cited OEM source lists Prop/jet shaft horsepower for Yamaha Outboards F25 20in as 25 hp.
What is the engine displacement of Yamaha Outboards F25 20in?
0.432 L
The cited OEM source lists Engine displacement for Yamaha Outboards F25 20in as 0.432 L.
What is the WOT lower rpm value for Yamaha Outboards F25 20in?
5000 rpm
The cited OEM source lists WOT lower rpm for Yamaha Outboards F25 20in as 5000 rpm.
What is the WOT upper rpm value for Yamaha Outboards F25 20in?
6000 rpm
The cited OEM source lists WOT upper rpm for Yamaha Outboards F25 20in as 6000 rpm.
What is the Alternator output value for Yamaha Outboards F25 20in?
16 A
The cited OEM source lists Alternator output for Yamaha Outboards F25 20in as 16 A.
What is the Compression ratio value for Yamaha Outboards F25 20in?
9.3 :1
The cited OEM source lists Compression ratio for Yamaha Outboards F25 20in as 9.3 :1.
What is the Gear ratio value for Yamaha Outboards F25 20in?
2.0 :1
The cited OEM source lists Gear ratio for Yamaha Outboards F25 20in as 2.0 :1.
Quick technical specification
Prop/jet shaft horsepower
25 hp
Engine displacement
0.432 L
WOT lower rpm
5000 rpm
WOT upper rpm
6000 rpm
Alternator output
16 A
Compression ratio
9.3 :1
Gear ratio
2.0 :1
Oil, fluids, energy and capacities
Engine oil capacity
1.1 L
Expected values / measurement references
Prop/jet shaft horsepower
25 hp
Engine displacement
0.432 L
WOT lower rpm
5000 rpm
WOT upper rpm
6000 rpm
Alternator output
16 A
Compression ratio
9.3 :1
Gear ratio
2.0 :1
Engine oil capacity
1.1 L
Model-specific OEM reference checks
F25 20in: published Prop/jet shaft horsepower reference is 25 hp. Measurements on the same variant/year scope should use this value as the reference.
F25 20in: published Engine displacement reference is 0.432 L. Measurements on the same variant/year scope should use this value as the reference.
F25 20in: published WOT lower rpm reference is 5000 rpm. Measurements on the same variant/year scope should use this value as the reference.
F25 20in: published WOT upper rpm reference is 6000 rpm. Measurements on the same variant/year scope should use this value as the reference.
F25 20in: published Alternator output reference is 16 A. Measurements on the same variant/year scope should use this value as the reference.
F25 20in: published Compression ratio reference is 9.3 :1. Measurements on the same variant/year scope should use this value as the reference.
Diagnostic entry symptoms
Cannot reach specified WOT RPM
Temperature alarm
Unstable idle
Charging or trim problem
Measurement and test approach
Record actual WOT RPM with the correct propeller and load condition.
Monitor cooling-water flow and engine temperature under load.
Measure charging current/voltage and battery-connection voltage drop.
Root-cause discrimination
Separate propeller/load mismatch from engine fuel or ignition faults.
For a temperature alarm, separate water inlet/impeller/thermostat faults from the sensor circuit.
DTC / SPN / FMI context
Preserve Yamaha ECU fault history, overheat/oil-pressure events and network alarms, where equipped, together.
Post-repair verification
At idle, cruise and WOT load, temperature, charging and RPM should remain stable and the alarm must not return.
Electrical and network
12 V starting/charging, ECU, trim/tilt and Command Link/Helm Master data are evaluated together.
Sensors, actuators and observation points
F25 20in: Engine RPM, throttle and load.
F25 20in: Cooling-water/engine temperature.
F25 20in: Fuel pressure and injector command.
F25 20in: Trim angle and charging current.
OEM primary sources
Continue with related models and classes
Technical data centers
Evidence boundary
Only exact values published by the cited source are shown numerically. Pins, torque, pressure, resistance or service thresholds not publicly published are not invented; use the VIN/model-year/calibration-matched OEM service procedure.
Sources & freshness
Sources & freshness
Exact technical values, prices and failure rates are not invented without verified vehicle/manufacturer evidence.