2025 Yamaha Marine Jet Drive 90 HP Base

Current Yamaha Marine Outboard Jet-DriveHigh-Thrust Jet Drive 90 HP Jet Drive 90 HP

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Year 2025
Make Yamaha Marine
Model Jet Drive 90 HP

Shop Yamaha Marine Pre-Owned

Product Details Specifications Photos

Year 2025
Manufacturer Yamaha Marine
Model Name Jet Drive 90 HP
Trim Name Base
Generic Type (Primary) Jet
Engine Type Inline 4
Engine Power Prop Shaft: 65hp @ 5500rpm
Displacement 1.8L
Bore 3.19 in. (81 mm)
Stroke 3.5 in. (88.9 mm)
Compression Ratio 10.0:1
Throttle Full RPM Range: 5000 ~ 6000 rpm
Steering Mechanical Remote/Tiller | Angle (maximum): 35° from center, either direction
Exhaust Through Jet Nozzle
Ignition TCI Microcomputer
Oil Type Recommended: Yamalube® 4M (See owner's manual)
Lubrication Wet Sump
Cooling Recommended: Thermostatic Control
Gear Ratio (Primary) Direct Drive
Gear Shifter Forward, Neutral, Reverse
Induction Fuel Induction System: EFI

2025 Yamaha Marine Jet Drive 90 HP

JET DRIVE

Shallows. Rocky-bottom rivers. Shoals. White-water rapids. They’d all prove treacherous for a propeller-driven outboard, but Yamaha’s Jet Drive outboards are all about it. Available in 150, 115, 60 and 40 horsepower, you can “off-road” without the possibility of breaking a blade on rocks or other underwater obstructions. So, while you may be giving up the prop, you’re gaining a whole lot of freedom with a jet drive.

Our completely redesigned, 1.8-liter F90 Jet Drive outboard produces 65 hp at the pump. Its compact, lightweight SOHC four-cylinder, in-line design features a long-track induction system and Yamaha’s proprietary YDC-30 aluminum alloy. This creates a light, compact, powerful outboard for deck boats and deep-V hulls navigating shallow, rocky rivers, flats and sandbars.

Features may include:

354 pounds (including jet pump assembly)

Fits 25-inch transom boats

Solid 35-amp alternator

Power Trim & Tilt

Engine

Engine Type Inline 4

Engine Power Prop Shaft: 65hp @ 5500rpm

Displacement 1.8L

Bore 3.19 in. (81 mm)

Stroke 3.5 in. (88.9 mm)

Compression Ratio 10.0:1

Throttle Full RPM Range: 5000 ~ 6000 rpm

Steering Mechanical Remote/Tiller | Angle (maximum): 35° from center, either direction

Exhaust Through Jet Nozzle

Ignition TCI Microcomputer

Oil Type Recommended: Yamalube® 4M (See owner's manual)

Lubrication Wet Sump

Cooling Recommended: Thermostatic Control

Gear Ratio (Primary) Direct Drive

Gear Shifter Forward, Neutral, Reverse

Induction Fuel Induction System: EFI

Spark Plug

Spark Plug LFR5A-11

Electric

Starter System: Electric

Alternator Output, Maximum Output at W.O.T.: 35 Amp

Fuel System

Fuel System Ethanol Blend Limit: 10% Maximum

Fuel Type Recommended: Octane 87 | Recommended Fuel Filtration: Yamaha 10-Micron Fuel/Water Separating Filter (external)

Dimensions

Length Shaft: Fits 25" Transom

Dimensions Degree of Tilt: 70° | Degree of Trim: -4 through 16°

Capacities

Oil capacity Engine: 3.2L/3.0L

Weights

Weight 354 lbs (161kg )

Features

Features C.A.R.B. Rating: 3-Star | Intake: 16

Warranty

Warranty Limited 2-Year Pleasure, 2-Year Government, 1-Year Commercial