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Yamaha T60TLR Specifications
| Engine Model: Yamaha T60TLR |
| Engine Type: 4-stroke inline 4-cylinder OHC 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: Carburetors |
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| General Technical Data |
The Yamaha T60TLR is a 60-horsepower,
four-stroke outboard engine specifically engineered as a High Thrust
model, designed to deliver superior power and control for heavier boats
and demanding applications such as pontoon boats, workboats, and
auxiliary power for sailboats. This model is distinguished by its
specialized high thrust lower unit, which provides enhanced acceleration
and maneuverability, particularly when pushing heavy loads or operating
in displacement mode.
The T60TLR features a 996cc, inline four-cylinder powerhead with an
Overhead Camshaft (OHC) design, electric start system, remote control
steering, and power trim and tilt, providing operators with effortless
command and the ability to precisely adjust the boat's attitude for
optimal handling and fuel economy.
Its robust construction, combined with Yamaha's Ultimate Corrosion
Protection System, ensures long-term reliability in demanding marine
environments, making it a preferred choice for boaters requiring maximum
low-end power and durability.
The Yamaha T60TLR is a 4-stroke, Overhead Camshaft (OHC), inline
4-cylinder engine. 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 compression
ratio is 9.3:1.
| Powerhead |
The powerhead is built upon a robust cylinder block designed for
longevity and smooth operation. The cylinder head incorporates an
Overhead Camshaft (OHC) design. The valve clearances are critical for
performance and must be maintained within specified ranges with the
engine cold. 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 ignition control system is a microcomputer-controlled TCI
(Transistor Controlled Ignition) system, which provides precise spark
timing without moving parts for reliable, maintenance-free operation.
Ignition timing ranges from 5 degrees BTDC at idle to 35 degrees BTDC at
wide-open throttle.
| Fuel System |
The fuel system is based on four individual carburetors, one for each cylinder, featuring Yamaha's Prime Start enrichment system for effortless starting in various conditions. The engine operates on regular unleaded gasoline with a fuel rating of 86 octane.
A standard remote fuel tank has a capacity of 24.0 liters (6.3 US gallons). The fuel system should be inspected periodically for leaks, damage, or wear, with the fuel filter cleaned at regular service intervals.
| Lubrication System |
The T60TLR 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 motor oil with SAE viscosities of 10W-30, 10W-40, or 20W-40 that meet API service classifications SE, SF, SG, or SH.
The total engine oil capacity, including the oil filter, is 2.5 liters (2.6 US quarts). Oil changes should be performed regularly, approximately every 100 hours of operation or annually, to maintain proper lubrication and prevent engine wear.
| Cooling System |
Cooling is managed by a raw-water system with thermostatic control,
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. The thermostat helps maintain acceptable cylinder
temperatures across a wide range of engine speeds.
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 cooling system should be inspected regularly,
including the water pump, thermostat, and cooling passages.
| Mid Section and Lower Unit |
The exhaust system is designed to expel gases through the propeller boss
for quieter operation and reduced back pressure. The gear shift
positions are forward, neutral, and reverse. The gear ratio is 2.33:1,
derived from a 28/12 gear set. This lower gear ratio, combined with the
high thrust lower unit, provides excellent torque multiplication for
rapid acceleration and improved performance with heavier loads such as
pontoon boats and work vessels.
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. The gear case
requires hypoid gear oil meeting API GL-4 SAE 90 standards, with a total
capacity of 0.67 liters (0.70 US quarts).
| Trim and Tilt System |
The engine is equipped with a power trim and tilt system, providing full, relaxed control over the engine's angle relative to the transom. The trim angle is adjustable, allowing operators to optimize boat attitude for acceleration, fuel economy, and ride comfort under varying load and water conditions.
The tilt function enables shallow water operation and easy trailering or beaching. The system includes an external tilt switch for convenient operation from outside the boat.
| Propeller Information |
Selecting the correct propeller is essential for achieving optimal
engine performance within the recommended full throttle operating range.
The Yamaha T60TLR utilizes a spline drive system and is designed to run
with propellers optimized for high thrust applications.
Aluminum propellers are commonly used with this engine for pontoon and
work boat applications. 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.
| Dimensions and Weight |
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 is 1,455 mm (57.3 inches), with a corresponding transom height of 530 mm (20.9 inches).
The dry weight for the long shaft version is approximately 113 kg (249 lbs) according to technical data, though some sources list 262 lbs for specific model years. This weight reflects the robust construction and specialized high thrust lower unit of the engine.
| Maintenance Data |
Routine maintenance is essential for optimal performance and longevity.
The engine is equipped with a microcomputer TCI ignition control system.
The alternator output is 12 volts at 10 amperes according to technical
specifications, though some sources indicate a high output alternator
delivering up to 17 amperes at wide-open throttle.
The standard spark plug for the T60TLR is an NGK DPR6EB-9. The spark
plug gap must be maintained between 0.8 and 0.9 mm (0.031-0.035 inches).
Spark plugs should be inspected regularly and replaced if signs of wear
or damage are present.
The engine features an Engine Sensing Warning System that monitors
critical parameters and alerts the operator to potential issues such as
overheating or low oil pressure. The maintenance schedule includes key
services at regular intervals including 50 hours, 100 hours, and annual
checks. The air filter should be inspected periodically.
The fuel system requires regular inspection, with the fuel filter
cleaned at service intervals. The cooling system requires periodic
inspection including water pump, thermostat, and cooling passages. The
lower unit requires regular inspection, with gear oil changed and moving
parts lubricated.
A visual inspection of the engine and outboard should be performed
before each use to detect any signs of damage or wear. Yamaha offers a 3
Year Limited Warranty for pleasure boat use and 1 Year Limited Warranty
for commercial applications. For major repairs or maintenance,
contacting an authorized Yamaha dealer or qualified marine mechanic
ensures the engine is maintained according to Yamaha standards.
| Tightening Torques |
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 18 Nm (13.5 lb-ft) to
ensure proper seating without damaging the cylinder head threads. The
propeller nut, which secures the propeller to the propeller shaft,
requires 35 Nm (25 lb-ft).
The engine oil drain plug must be tightened to 18 Nm (13.5 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.
| Boat Applications |
The Yamaha T60TLR 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 with
high thrust lower unit makes it exceptionally well-suited for pontoon
boats, with documented applications including Beachcomber 20 Cruise
models, Bennington 22 SFI pontoons, Sweetwater 2486 pontoon boats, and
Aqua Patio AP200 models where the engine has accumulated over 550 hours
of reliable service. The long shaft configuration is specifically
designed for boats with a 20-inch transom.
The engine's high thrust design and robust construction make it
particularly attractive for vessels requiring maximum low-end power,
including workboats, utility vessels, and as auxiliary power for
sailboats. 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.
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