Yamaha F60LB Specifications
| Engine Model: Yamaha F60LB |
| 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 F60LB is a 60-horsepower,
four-stroke, inline four-cylinder outboard motor celebrated for its
exceptional power-to-weight ratio, refined operation, and advanced
electronic fuel injection. This engine is considered one of the finest
mid-range outboards ever produced, combining brilliant fuel efficiency
with great torque and power for unmatched versatility.
At its core is a 996 cc powerhead featuring a single overhead camshaft
(SOHC) and eight valves, delivering ultra-smooth, usable power with low
noise and vibration levels. The F60LB utilizes Yamaha's exclusive
Multi-Point Electronic Fuel Injection (EFI) system with a large single
throttle valve, ensuring precise fuel delivery, quick starts, high
performance, and incredible efficiency.
A key feature is the variable trolling control, allowing anglers to
precisely adjust trolling speeds in 50 RPM increments. This model,
designated F60LB, features electric start, power trim and tilt, a
20-inch shaft length, and is designed for remote mechanical control,
making it a dynamic choice for aluminum fishing boats, fiberglass
runabouts, and pontoons.
Engine type: 4-Stroke, SOHC, In-line 4, 8-Valve.
Number of cylinders: 4.
Total displacement: 996 cc (60.8 cu in).
Bore and stroke: 65.0 x 75.0 mm (2.56 x 2.95 in).
Prop shaft output: 44.1 kW (60 hp) at 5,500 rpm.
Full throttle operating range: 5,000-6,000 rpm.
Idle speed: 700-800 rpm.
Compression ratio: 9.5:1.
Fuel induction system: EFI (Electronic Fuel Injection), Multi-Point.
Ignition system: TCI Microcomputer.
Starting system: Electric (with manual recoil backup).
Control system: Remote Mechanical Control (Optional Tiller Handle
Available).
Alternator output: 12V - 16A with rectifier/regulator.
Spark plug: NGK DPR6EB-9.
Spark plug gap: 0.8-0.9 mm (0.031-0.035 in).
Cooling system: Water, Thermostatic Control.
Exhaust system: Through propeller.
Lubrication system: Wet sump.
Recommended fuel: Regular unleaded gasoline (minimum octane 87).
Fuel rating: Min. 86.
Fuel tank capacity: 25.0 L (6.6 US gal) (portable tank).
Engine oil grade: 4-stroke outboard motor oil, Yamalube 4M recommended.
Engine oil type: SAE 10W-30, 10W-40, API SE, SF, SG, SH, SJ, SL.
Engine oil capacity: 2.1 L (2.2 US qt) with filter, 1.9 L (2.0 US qt)
without filter.
Gear oil type: Hypoid gear oil SAE90.
Gear oil grade: API GL-4 SAE 90.
Gear oil capacity: 0.43 L (0.45 US qt).
Gear ratio: 1.85:1 (24/13).
Gear shift positions: Forward - Neutral - Reverse.
Reduction gear type: Spiral bevel gear.
Clutch type: Dog clutch.
Propeller shaft type: Spline.
Propeller direction (rear view): Clockwise.
Propeller drive system: Spline.
Propeller identification mark: G.
Trim and tilt system: Power Trim and Tilt.
Trim angle range: -4° through +16°.
Tilt-up angle: 69°.
Shaft length: 20 inches (Long Shaft).
Steering angle: 40° from center, either direction.
Variable Trolling RPM: 650 to 900 RPM adjustment in 50 RPM increments
via Command Link System or optional tiller handle.
Ethanol blend limit: 10% Maximum.
C.A.R.B. rating: 3-Star (Ultra Low Emission).
The Yamaha F60LB is constructed around a precision-engineered 996 cc
inline four-cylinder powerhead. The cylinder block is made from
high-strength, lightweight aluminum alloy, featuring Yamaha's
proprietary YDC-30 alloy combined with an exclusive Phaze Five
electro-deposited, anti-corrosive paint system that provides a tough,
five-layer barrier against corrosion.
The cylinder bore and stroke are configured at 65.0 mm and 75.0 mm
respectively. The cylinder head features a single overhead camshaft
(SOHC) operating eight valves via rocker arms, with two intake and two
exhaust valves per cylinder. This SOHC design provides a compact,
lightweight, space-saving design while the long stroke configuration
delivers ultra-smooth, usable power with low noise and vibration levels.
The composite intake manifold features long tube intake tracks that are
pulse-tuned to increase airflow, boosting low-end and midrange torque
for a more powerful hole shot and increased acceleration. All air
entering the engine block is routed through a large single throttle
valve, ensuring the precise amount of air necessary for optimum power
and fuel efficiency.
The SOHC valve train in the F60LB requires periodic valve clearance
inspection and adjustment to maintain optimal performance and quiet
operation. The intake valve clearance, measured with the engine cold, is
specified at 0.15-0.25 mm (0.006-0.010 in).
The exhaust valve clearance, which operates under higher thermal loads,
is set to 0.25-0.35 mm (0.010-0.014 in). The camshaft is driven by a
timing chain designed for durability, and the valve train components are
lubricated by pressurized oil from the wet sump system. The engine
incorporates an air silencer box and surge tank to reduce air intake
noise and air turbulence for smooth, quiet operation.
The F60LB employs a sophisticated Multi-Point Electronic Fuel Injection
(EFI) system with a large single throttle valve. This system injects the
right amount of fuel into the combustion chamber at the optimum timing,
taking into account engine speed and load requirements to achieve
maximum engine performance.
The air flow is precisely delivered to all four cylinders based on the
demands of the driver and combustion conditions, with the air
pulse-tuned before it reaches the injectors to promote a clean and
efficient burn for maximum economy and power. The EFI system delivers
the exact amount of fuel needed for optimum performance and efficiency
while optimizing fuel atomization to further enhance fuel economy.
The Prime Start system makes starting as easy as starting a car,
automatically controlling the engine warming up process and eliminating
the need for a conventional choke. The fuel system includes an external
Yamaha 10-Micron Fuel/Water Separating Filter for optimal filtration.
The engine operates on regular unleaded gasoline with a minimum octane
rating of 87.
The Yamaha F60LB utilizes a wet sump lubrication system, where engine
oil is stored in an integrated oil pan at the base of the engine. A
pressurized oil delivery system incorporates a compact and durable oil
pump to keep all moving parts of the SOHC system lubricated and running
smoothly for maximum reliability. The system includes a full-flow oil
filter that removes contaminants from the oil.
The recommended oil is Yamalube 4M or a high-quality 4-stroke motor oil
meeting API SE, SF, SG, SH, SJ, or SL specifications, with SAE 10W-30 or
10W-40 suitable for most operating conditions. The engine oil capacity
is 2.1 liters (2.2 US quarts) with filter replacement, and 1.9 liters
(2.0 US quarts) without filter replacement. The oil drain plug is
torqued to 28 Nm (21 lb-ft), and the oil filter to 18 Nm (13.5 lb-ft).
Regular oil and filter changes are essential for engine longevity.
The cooling system is a raw-water, thermostatically controlled design. A
water pump, driven by the driveshaft, draws water from the body of water
through an inlet in the lower unit and circulates it through water
jackets in the cylinder block and cylinder head. The system is regulated
by a thermostat that maintains optimal operating temperature by
controlling water flow.
The F60LB features a convenient freshwater flushing device that allows
owners to easily connect a garden hose to flush the cooling system with
fresh water without running the engine, significantly reducing corrosion
and extending engine life. The cooling system works with the engine
warning system, which includes overheat protection that automatically
reduces maximum RPM to 2,000 if excessive temperature is detected.
| Mid Section and Lower Unit |
The mid section houses the driveshaft and exhaust passage, connecting
the powerhead to the lower unit. The lower unit contains the reduction
gearing and propulsion components. The gear ratio is 1.85:1, achieved
with a pinion gear and forward gear set of 24/13 teeth. This gear ratio
is standard for all-around performance, providing a balance of
acceleration and top-end speed.
The reduction gears are of the spiral bevel type, selected for their
strength and smooth, quiet operation. The clutch mechanism is a dog
clutch, providing positive engagement for shifting. Gear shift positions
are forward, neutral, and reverse. The propeller shaft is splined to
accept a wide range of propeller options. The lower unit housing
includes a magnetic drain plug that removes metal particles from the
gear oil to prevent gearcase damage.
The gear housing is filled with hypoid gear oil meeting API GL-4 SAE 90
specifications, with a total capacity of 0.43 liters (0.45 US quarts).
Regular inspection and periodic changing of the gear oil are necessary
to detect water ingress or wear particles.
The Yamaha F60LB is equipped with a power trim and tilt system, allowing
effortless adjustment of the engine angle relative to the boat transom
with push-button control. The system uses an electro-hydraulic pump and
dual hydraulic cylinders to raise and lower the engine. The trim angle
range extends from -4° (trimmed fully in, forcing the bow down for
planing) to +16° (trimmed out for optimal running attitude).
The negative trim settings allow for improved acceleration and the
ability to bring the boat onto the plane more quickly. The system also
provides a tilt-up angle of 69° for beaching, launching, trailering, or
shallow water operation. The power trim and tilt system is controlled by
rocker switches on the remote control, making adjustments quick, smooth
and easy across a wide trim range.
Selecting the correct propeller is essential for optimizing the
performance of the Yamaha F60LB. The engine is designed to operate
within its full throttle rpm range of 5,000-6,000 rpm, and the propeller
pitch must be chosen so that, with a normal boat load, the engine
reaches the upper half of this range at full throttle.
Yamaha offers a comprehensive range of genuine propellers for the F60LB.
Performance bulletins from Yamaha document testing with aluminum
propellers of size 10-5/8 x 12 (part 6H5-45952-00-00) on boats such as
the Smoker Craft Pro Angler 162 and Starcraft Stealth 166 SC.
The Alloy White G Series propellers deliver Yamaha's high-quality design
and performance in a low-cost, lightweight propeller, coming in a wide
range of sizes and pitches to suit every power requirement. The
propeller nut must be tightened to the specified torque of 35 Nm (25
lb-ft). Propeller selection guides are available to assist in choosing
the appropriate pitch based on boat type, weight, and intended use.
Overall length: 698 mm (27.5 in)
Overall width: 386 mm (15.2 in)
Overall height (long shaft): 1,435 mm (56.5 in)
Transom height (long shaft): 527 mm (20.7 in)
Weight (long shaft): 113 kg (249 lb)
After first 10 hours or 1 month: Change engine oil and oil filter.
Inspect gear oil for water contamination. Check and retighten all bolts
and nuts. Every 50 hours or 3 months: Inspect and clean spark plugs.
Check and clean fuel filter. Inspect fuel lines and connections for
cracks or damage. Check gear oil level and condition. Lubricate all
control linkages and moving parts.
Every 100 hours or 6 months: Change engine oil and oil filter. Replace
spark plugs. Inspect and clean cooling water passages. Check condition
of sacrificial anodes, replacing if significantly eroded. Check valve
clearance and adjust as necessary.
Every 200 hours or 1 year: Replace water pump impeller. Inspect and
clean entire fuel system, including fuel injectors. Replace fuel lines
if hardened or cracked. Perform a thorough check of all electrical
connections and controls. Change gear oil. Every 300 hours or 3 years:
Replace timing chain and tensioners if specified by service manual.
Inspect and repack or replace steering cable and tilt tube bushings.
Spark plug: 18 Nm (13.5 lb-ft)
Propeller nut: 35 Nm (25 lb-ft)
Oil drain plug: 28 Nm (21 lb-ft)
Oil filter: 18 Nm (13.5 lb-ft)
The Yamaha F60LB is a versatile and technologically advanced power
choice for a wide range of boat types. Its 60-horsepower output,
combined with its refined four-stroke design and electronic fuel
injection, makes it an ideal engine for aluminum fishing boats,
including the Smoker Craft Pro Angler 162, Starcraft Stealth 166 SC, and
Starcraft Patriot 16 SC. Performance data from Yamaha tests on these
boats demonstrates excellent fuel economy and acceleration.
Pontoon boats and small to mid-sized fiberglass runabouts benefit from
the engine's smooth power delivery and quiet operation for family
boating and tubing. The variable trolling RPM feature makes the F60LB
particularly well-suited for anglers targeting walleye, bass, and
panfish, allowing precise lure presentation. The F60LB is also an
excellent choice for small skiffs such as the Maritime 1480 Skiff, bay
boats, and larger rigid-hull inflatable boats (RIBs) used for
recreational boating and diving.
Light utility craft in commercial applications also rely on this
engine's durability, fuel efficiency, and legendary Yamaha reliability.
The engine's exceptional corrosion protection system and freshwater
flushing capability make it particularly well-suited for saltwater
applications. The optional Y-COP immobiliser system adds an extra layer
of security for boat owners who trailer their vessels or moor in public
areas.
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