Yamaha F60CET Specifications
| Engine Model: Yamaha F60CET |
| Engine Type: 4-stroke inline 4-cylinder SOHC 8-valve gasoline outboard engine |
| Total Displacement: 60.8 cu.in (996 cc) |
| Rated Engine Power: 60 Hp (44.1 kW) at 5500 rpm |
| Fuel System: Electronic Fuel Injection (EFI) |
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The Yamaha F60CET is a 60-horsepower,
four-stroke outboard engine that delivers a compelling combination of
power, efficiency, and refined operation within a compact and
lightweight package. This model is distinguished by its 996cc, inline
four-cylinder powerhead equipped with electronic fuel injection,
electric start, and power trim and tilt, providing operators with
effortless command, smooth acceleration, and the ability to precisely
adjust the boat's attitude for optimal handling and fuel economy.
The F60CET is engineered for reliability and versatility, making it
exceptionally well-suited for a wide variety of recreational and
semi-commercial applications, from aluminum fishing boats and utility
skiffs to small pontoons and as auxiliary power for larger sailing
vessels. Its advanced four-stroke design ensures cleaner operation with
reduced emissions and noise, while features like the Prime Start system,
high-output alternator, and shallow water drive enhance user convenience
and expand operational capabilities.
The Yamaha F60CET is a 4-stroke, Single Overhead Camshaft (SOHC), inline
4-cylinder engine featuring an 8-valve configuration. The total
displacement is 996 cc (60.8 cu.in), achieved through a bore and stroke
of 65.0 mm (2.56 inches) and 75.0 mm (2.95 inches), respectively. It
produces a maximum prop shaft output of 44.1 kW, equivalent to 60
horsepower, at 5,500 rpm. The engine has a full throttle operating range
of 5,000 to 6,000 rpm. The idle speed is set between 700 and 800 rpm.
The compression ratio is 9.5:1.
The powerhead is built upon a robust cylinder block designed for
longevity and smooth operation. The cylinder head incorporates a Single
Overhead Camshaft (SOHC) operating four valves per cylinder - two intake
and two exhaust - for optimized breathing and combustion efficiency.
The valve clearances are critical for performance and must be maintained
within specified ranges. The intake valve clearance is set to 0.15-0.25
mm (0.006-0.010 inches), while the exhaust valve clearance is set to
0.25-0.35 mm (0.010-0.014 inches). The camshaft and crankshaft are
precision components requiring careful handling during service.
The fuel system is a sophisticated Electronic Fuel Injection (EFI)
system, managed by a reliable microcomputer module that controls fuel
delivery for clean and efficient performance. This system automatically
adjusts the fuel mixture for varying conditions, eliminating the need
for manual choke adjustments.
The Prime Start system provides effortless starting, comparable to
starting an automobile. The engine operates on regular unleaded gasoline
with a minimum octane rating of 86 to 90. A standard remote fuel tank
has a capacity of 25.0 liters (6.6 US gallons).
The F60CET utilizes a wet sump lubrication system, meaning engine oil is
contained within a sump in the powerhead. The recommended engine oil is
high-quality 4-stroke outboard motor oil, with Yamalube being the
preferred brand.
Acceptable oil types include SAE 10W-30 or 10W-40 viscosities that meet
API service classifications SE, SF, SG, SH, SJ, or SL. The total engine
oil capacity is 2.5 liters (2.6 US quarts) when replacing the oil
filter, and 2.2 liters without filter replacement.
Cooling is managed by a raw-water system with a thermostat, circulating
water through passages in the engine block and cylinder head. A water
pump, driven by the drive shaft, draws water from outside the boat and
forces it through the engine to maintain optimal operating temperatures.
A pilot water outlet on the engine exterior provides a visual indication
that the water pump is functioning and cooling water is circulating
properly.
A fresh water flushing system is integrated into the design,
facilitating easy removal of salt and debris after operation in marine
environments. The flushing procedure involves installing a flushing
attachment over the cooling water inlets and running the engine at fast
idle for several minutes in neutral position.
| Mid Section and Lower Unit |
The exhaust system is designed to expel gases through the propeller hub
for quieter operation and reduced back pressure. The gear shift
positions are forward, neutral, and reverse. The gear ratio is 1.85:1,
derived from a 24/13 gear set. The reduction gear type is spiral bevel
gear, and the clutch is a dog type, providing positive engagement.
The propeller shaft utilizes a spline drive system for secure propeller
mounting, and the propeller rotation, when viewed from the rear, is
clockwise in forward gear. The gear case requires hypoid gear oil
meeting API GL-4 SAE 90 standards, with a total capacity of 0.43 liters
(0.45 US quarts).
The engine is equipped with a Negative Power Trim and Tilt system
(NPTT), providing full, relaxed control over the engine's angle relative
to the transom. The trim angle is adjustable within a range of -4 to 20
degrees, allowing operators to optimize boat attitude for acceleration,
fuel economy, and ride comfort under varying load and water conditions.
The tilt-up angle is 69 degrees. The system also features a shallow
water drive capability, allowing the engine to be quickly tilted and
operated at a shallower angle for safe navigation through shallow water
without striking the bottom. The steering angle is 40 degrees in both
directions.
Selecting the correct propeller is essential for achieving optimal
engine performance within the recommended full throttle operating range.
The Yamaha F60CET utilizes a spline drive system and is designed to run
with a wide selection of aluminum and stainless steel propellers offered
as optional equipment.
The appropriate propeller allows the engine to operate at or near the
top of its 5,000-6,000 rpm full throttle range when the boat is properly
loaded. Propeller markings indicate the diameter and pitch in inches.
The comprehensive rigging guide provides detailed propeller
specifications and selection charts for various applications.
The overall length of the outboard is 706 mm (27.8 inches). The overall
width is 384 mm (15.1 inches). The overall height for the long shaft
model, designated for a 20-inch transom, is 1,415 mm (55.7 inches), with
a corresponding transom height of 527 mm (20.7 inches).
An extra-long shaft version (F60CETX) is available with an overall
height of 1,538 mm and transom height of 644 mm (25.4 inches). The dry
weight for the long shaft version is 110 kg (243 lbs), making it one of
the lightest engines in its power class and particularly attractive for
vessels where weight distribution is a concern.
Routine maintenance is essential for optimal performance and longevity.
The engine is equipped with a TCI (Transistor Controlled Ignition)
ignition system with microcomputer control, which provides precise spark
timing without moving parts for reliable, maintenance-free operation.
The alternator output is a robust 12V - 16A system with a
rectifier/regulator to maintain proper battery charging.
The standard spark plug for the F60CET model is an NGK DPR6EB-9. The
spark plug gap must be maintained between 0.8 and 0.9 mm (0.031 to 0.035
inches). The Variable Trolling RPM feature, operated via a switch on the
remote control box, allows for precise speed control at low speeds for
trolling applications. The engine is compatible with Yamaha's Command
Link digital network gauges, allowing operators to monitor critical
engine parameters including speed, fuel management, and engine hours in
real time.
The maintenance schedule includes key services at initial break-in, 50
hours, 100 hours, and annual intervals. Items requiring periodic
attention include the valve clearance, which must be inspected and
adjusted by qualified personnel using feeler gauges. The recommended
battery specification includes cold cranking A of 430 A (CCA/EN). The
engine is equipped with warning systems for over-revolution, overheating
(with speed control function), and low oil pressure, all of which
trigger visual and audible alerts to protect the engine from damage.
Adhering to correct torque specifications is critical during assembly
and maintenance to ensure proper sealing, component retention, and safe
operation. The spark plug must be torqued to 17 Nm (12.5 lb-ft) to
ensure proper seating without damaging the cylinder head threads.
The propeller nut, which secures the propeller to the propeller shaft,
requires 34 to 35 Nm (25 to 25.8 lb-ft). The engine oil drain plug must
be tightened to 27 Nm (20 lb-ft) to prevent leaks while allowing future
removal. The oil filter requires 18 Nm (13.5 lb-ft) for proper sealing
against its mounting surface. Additional torque specifications for
critical fasteners are documented in the official service manual.
The Yamaha F60CET is intended for use on boats where the total
horsepower does not exceed the vessel's maximum rated power capacity, as
indicated on the boat's capacity plate. Its 60-horsepower output makes
it suitable for a wide range of boats, including aluminum fishing boats,
utility skiffs, pontoons, small center-console vessels, and as auxiliary
power for larger sailboats.
The long shaft configuration is specifically designed for boats with a
20-inch transom, while the extra-long shaft version accommodates 25-inch
transoms. The engine's lightweight design relative to its power output
makes it particularly attractive for vessels where weight distribution
is a concern. Proper installation, including correct remote control
cable adjustment and battery selection, is essential to ensure safe
handling and prevent loss of control.
As with all outboards, operators must always ensure the engine stop
switch lanyard is attached to a secure part of their clothing or life
jacket. The optional Yamaha Customer Outboard Protection (Y-COP) system
adds an extra layer of security against unauthorized use.
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