2005 Honda Zoomer
Honda's involvement in the world of scooters reaches
back several generations, and covers everything from
smart and stylish little 50cc runabouts to the prestigious
600cc ABS-equipped Silver Wing luxury scooter. Small
scooters, though, hold a special place in Honda's
stable, as they not only provide young and new riders
with an easy and inexpensive way to gain first-hand
experience of the enjoyment of riding, but provide
people of all ages and backgrounds with cheap, dependable
transportation that saves time, bother and natural
resources. As more people discover every year, most
daily transportation needs don't really call for the
extra parking hassles and expense of a car when a
bike or scooter will do.
Although most of Honda's offerings in the 50cc displacement class have until
recently been powered by 2-stroke engines, ongoing concerns about air pollution and
reducing the impact of motor vehicles on the environment has seen Honda terminate
the production of 2-stroke engines for virtually all its road-going machines. Offering
tighter tolerances and more precise control over the variables that affect combustion
efficiency and its related exhaust emissions, the 4-stroke engine achieves the dual
goals of providing smooth, dependable power while minimising fuel consumption and
its resultant emissions of greenhouse gases.
Arriving in 2005 to make new friends in Europe, as it already has in Japan and
the United States, Honda's latest addition to its wide scooter lineup is the radical new
Zoomer, a bold statement in youth-oriented, no-frills design that also charts new
territory in the quest for economical, low-impact daily transportation. Featuring unique
styling that's just wild enough to bring a smile to any face, and a highly advanced,
new liquid-cooled PGM-FI (Programmed Fuel-Injection) 4-valve 4-stroke engine that
provides an exciting blast of dependable power while setting a new standard for
environmental compatibility, the new Zoomer lives up to its name with sprightly
performance and a friendly 'go anywhere, do anything' disposition that will attract a
large following of young riders looking for the latest in new and cool.
Rugged in looks and rugged in construction, the Zoomer eschews elegance and
refinement for a more nitty-gritty look and feel of carefree riding enjoyment that
provides a strong attraction for young people on the move. If anything sets the new
Zoomer apart, it is without a doubt its bold bare-bones design, with slim profile
contoured seat seeming to hover in space atop a rugged, bolt-on steel tube seat frame.
The Zoomer's 'vitals' are secreted way under the spacious, flat floor panel and packed
into the bulbous box wrapped around its steering head, imparting a bold impression of
back-to-basics toughness that promises fun times on the go.
Looking like nothing more than a seat and handlebars attached to a pair of
wheels, the new Zoomer's stark minimalist design effectively conceals a host of
unprecedented technological advances that make it a quick and dependable runabout
that's sure to win fast friends wherever it roams.
Unique Open Carrying Space
Beneath its remarkably comfortable contoured pad of a seat, the Zoomer features
a wide-open area above a moulded plastic pan designed to carry just about anything
that will fit in the space between the rails of its seat sub-frame. From shoes and skates
to books and bags of gear, or even a skateboard, the Zoomer's cargo area gives its
rider the greatest carrying freedom. Strategically positioned bungee hooks facilitate
tying down and securing whatever is being taken along for the ride.
The new Zoomer attacks the streets of Europe in four bold colour variations that
brilliantly accentuate its no-nonsense emphasis on the fundamental pleasures of
scooter riding. Leading the pack is basic black from top to bottom, end to end that
gives it a mean, aggressive look. This is followed by eye-catching yellow and red
variations that setoff its seat frame and front 'box.' Finally, a camouflage-look olive
green blends right into the background or fits the baggy khakis of the young people
who are sure to want to ride it.
Features and Benefits
Lightweight 50cm³ 4-stroke 4-valve SOHC liquid-cooled single-cylinder engine
provides ample power for in-town riding fun.
Innovative new PGM-FI system is the smallest Honda makes, and the most advanced
system ever developed for this displacement class, offering responsive performance,
top fuel economy, and the lowest emissions ever.
Maintenance-free fully electronic ignition system combines with the Zoomer's
advanced fuel injection to ensure easy starts and dependable operation.
Easy push-button electric starter utilises the engine's brushless ACG (alternator) in
an innovative development that eliminates the need for-and weight of-a separate
starter motor, for startups that are quick, reliable, and remarkably quiet.
Electronic control unit (ECU) provides control for fuel injection, ignition timing,
alternator regulator, ACG starter, electromagnetic fuel pump and programmed
automatic idling system's air intake control valve.
Ultra-compact electromagnetic fuel pump contained inside slim-profile fuel tank
located under the Zoomer's floorboard.
Lightweight, maintenance-free, magnetically driven water pump eliminates the need
for mechanical seals.
Compact engine-mounted radiator has aluminium fins for optimal cooling in all
Automatic camchain tensioner requires virtually no maintenance.
Ultra-quiet exhaust system.
Fully automatic Honda V-Matic belt-drive transmission provides spirited
acceleration while requiring virtually no maintenance.
Two-piece die-cast aluminium front frame with exposed steel tube upper rear frame
presents a dynamic image.
Twin downtube fork front suspension delivers 49mm of plush travel for a wellcontrolled
Single-side aluminium unit swingarm with single-damper rear suspension features
65mm of travel for a compliant, comfortable ride.
Compact front and rear drum brakes offer predictable stopping power.
Oversize tyres mounted on attractive pressed steel wheels offer secure road grip
while helping to absorb the bumps.
Well-padded contoured seat boasts a low, 735mm seat height for added confidence at
Spacious, flat floorboard provides plenty of room to move feet, for excellent longterm
Instrumentation includes analogue speedometer, odometer, and indicator lights for
fuel, coolant temperature and low/high beam. Fuel indicator light comes on when
approximately 1 litres remains in the fuel tank.
Helmet holder locks helmet in place under seat.
Handy and efficient backup kickstart lever generates enough charge to power the
electronic ignition and fuel injection systems for quick and easy starts-even if the
battery is dead.
Dual bug-eye headlights with two 35W bulbs. Low/high beams provide ample nighttime
Handlebar switches and controls use internationally approved ISO graphic symbols.
The Zoomer is powered by a rugged and reliable new high-tech 50cm³ 4-stroke
4-valve SOHC liquid-cooled single-cylinder engine that will become Honda's classleading
new standard for 50cc scooter production around the world. The first 50cc
scooter released in Europe to be powered by a 4-stroke 4-valve engine, the Zoomer's
compact, highly advanced power unit was designed to provide unsurpassed 4-stroke
performance while meeting the world's strictest emissions regulations.
This new engine also achieves unprecedented levels of fuel economy and low
emissions while delivering remarkable power and torque for easy, reliable riding fun.
And as a herald of the future of motorcycle design, the Zoomer's innovative new
PGM-FI system and HECS3 oxygen-sensing catalyser system also makes it the
smallest displacement machine ever equipped with such advanced control systems.
New 4-Valve SOHC Engine Design
Representing a new generation of 4-stroke engine development that finally
approaches the performance of 2-stroke engines, but without their well-known
environmental drawbacks, the new Zoomer's liquid-cooled 4-stroke 4-valve single
overhead cam engine develops a powerful surge of acceleration and satisfying
performance from start right up to its legally sanctioned velocity ceiling of 45km/h.
Within this range, the Zoomer delivers exciting low-to-mid rpm performance and high
torque for quick takeoffs and exhilarating riding fun.
Revolutionary ACG Electric Start
The flick of a key and touch of a button are all it takes to bring the Zoomer
quickly and effortlessly to life, meaning quick errands and trips across town couldn't
be easier. Instead of requiring a separate starter motor to turn over the engine, the
Zoomer features an innovative adaptation of its brushless ACG, which turns over the
engine in a smooth, simple and lightweight design that also realises astoundingly quiet
startup operation. Eliminating the need for a separate starter motor, the weight savings
of this development also makes a small but significant contribution to the Zoomer's
miserly fuel economy.
Reliable Kick-Start Capability
To ensure reliable starts under any conditions-even with a dead battery-the
engine's fuel injection system operates on a far smaller electrical load than required by
conventional systems. Through a special ignition program that momentarily turns off
all circuits save those critical to the fuel injection and ignition systems, the Zoomer
can be started with only the small current generated by its kickstarter, thus providing
consistently quick starts and smooth, strong performance over the long term, and
making the Zoomer's fully electronic control system ideal for use in 50cc scooter
applications, with their small batteries and comparatively low-output ACGs.
Advanced PGM-FI System
In another remarkable Honda advance in small engine design, the Zoomer
features the first-ever application of Honda's precision PGM-FI system in a 50cc
scooter engine to be seen on the roads of Europe. Delivering the highly accurate
control, superb fuel economy and other benefits associated with much larger and more
expensive machines, this advanced system provides smoothly responsive acceleration
while ensuring easy starts and smooth operation on the coldest of mornings
For the ultimate in system integration, this new fuel injection system
incorporates the throttle body and sensors into one compact, bolt-on unit. The actual
fuel injector is mounted on the engine head, at the mouth of the intake port, where it
feeds its fuel charge directly into the combustion chamber.
For such a small engine, fuel metering and even the twin-hole fuel injector itself
required special development to achieve maximum atomisation of the fuel entering the
combustion chamber for both top performance under all conditions and low fuel
The system's electronic control unit (or ECU) is also a compact, highly
integrated development which incorporates not only the control for the fuel injection
system, but also the computerised ignition, the electromagnetic fuel pump, the
programmed automatic idling system's air intake control valve, the HECS3 oxygensensing
low-emissions system, and even the control for the engine's innovative ACGintegrated
The marvels of miniaturisation even extend to the Zoomer's fuel tank-integrated
electromagnetic fuel pump, which is the smallest of its kind ever made. Nearly a third
the size of the unit installed in the fuel-injected Pantheon, its compact proportions
permitted the use of the slim fuel tank secreted away under the Zoomer's floorboard.
Compact, simple, and remarkably efficient, the Zoomer's highly advanced fuel
injection system optimises every facet of its riding performance.
Innovative Idle Air Control Valve
Whether roasting in desert temperatures below sea level or freezing high in the
mountains, the Zoomer's advanced fuel injection system ensures optimum fuel
metering for instant starts and smooth, strong performance anytime and anywhere. Its
compact, programmed Idle Air Control Valve (IACV) closely monitors ambient air
pressure and temperature under all conditions, from cold starts to hot idle, minutely
controlling the volume of air intake with a precision step motor to maintain ultrasmooth
Highest Efficiency for Lowest Fuel Consumption and Emissions
Complemented by its new PGM-FI electronic fuel injection system, this compact
50cm³ engine's inherently efficient 4-stroke SOHC 4-valve design ensures that the
Zoomer goes farther on a litre of fuel-over 50 kilometres, in fact-while keeping
annoying emissions of both exhaust fumes and noise to a bare minimum.
Integrated into the computerised fuel injection control system, the Zoomer's
HEC3 oxygen-sensing catalyser system is closely based on the system first pioneered
on Honda's Supersports technological flagship, the VFR. However, not only is the
new system more compact, it is also more minutely accurate in both monitoring and
control functions, for such low emissions of polluting exhaust gases that the Zoomer's
engine easily conforms with proposed stricter emissions regulations for the future.
The engine's advanced liquid-cooled configuration-with lightweight
aluminium radiator mounted directly to the side of the engine-also contributes to
reduced engine noise while maintaining optimal operating temperatures for strong allday
performance and low exhaust emissions.
Exhaust feeds out of a large-capacity silencer for a quiet purr of 4-stroke
operation that won't rattle the neighbours.
Advanced Features for More Carefree Riding Enjoyment
Although it may appear to be stripped of frills (and just about everything else),
the Zoomer actually comes fully equipped with the latest in rugged, maintenance-free
features to keep it on the road day in and day out without a care in the world. From its
quick-starting fuel injection system, maintenance-free ignition and push-button ACG
electric start to its ECU control of starter, ignition timing, fuel pump and Idle Air
Control Valve (IACV), the Zoomer is built to ride on, not work on.
An automatic camchain tensioner keeps timing precise and mechanical noise to a
minimum, while Honda's famed V-Matic belt-drive system delivers smooth and swift
acceleration with the mere twist of the Zoomer's throttle. One ride tells it all: The
Zoomer lives up to its name with a big blast of everyday fun.
The Zoomer's chassis assembly, while certainly a unique sight to see, maintains
the basic fundamentals of scooter design with a wide, easy-to-use floorboard area
providing plenty of legroom, and its compact liquid-cooled engine discreetly
integrated into the unit swingarm under the frame. Large and sturdy die-cast
aluminium rails tie the front and rear sections together while keeping the floorboard
wide and flat for excellent long-term riding comfort.
The Zoomer offers effortless control and delightfully resilient suspension
performance over even rough and bumpy urban road surfaces. A twin-tube front fork
equipped with specially designed rubber dampers at end of its stroke grips the
Zoomer's giant front wheel. This fork provides light, responsive control coupled with
a full 49mm of front axle travel-an unusually long stroke for this class of machine-
to soak up the bumps. At the rear, a single spring-loaded damper supports the robust
unit swingarm with 65mm of smoothly compliant control for a remarkably
Wheels and Brakes
Making up another eye-catching highlight of the Zoomer's design are its ultra-fat
tyres mounted on all-black steel wheels. Selected for go as well as show, these meaty
treads deliver excellent road-holding control while doing their part to smooth out the
bigger bumps in the road. Front tyre size: 120/90-10; Rear tyre size: 130/90-10.
Efficient braking control is provided by a pair of compact 95mm leading/trailing
shoe drum brakes, which bring the Zoomer quickly and smoothly to a stop in all traffic
Attractive Dual Headlights
Contributing to the Zoomer's tough mechanical look are a pair of small yet
bright 'bug-eye' headlights mounted beneath its compact tubular steel front carrying
rack and surrounded by a metal bracket that further accentuates its image of roughand-
ready cool. Brake light and indicators are compact and attractive, complementing
the Zoomer's boxy style with their rectangular designs.
The Zoomer's handy underseat carrying space can easily hold everything from a
stack of books to a day's groceries to something as otherwise unwieldy as a skateboard.
Simply load it in and tie it down using the four convenient hooks provided. Carrying
nets also attach easily to this space and possible carrying variations are limited only by
one's imagination. Space has also been provided for carrying a U-lock.
The Zoomer preliminary accessory line-up is currently under study.
Nevertheless, we want to give you a taste of what may be available from Honda to
enhance the practicality, comfort and bold looks of the exciting new Zoomer.
A bare bones design doesn't stand in the way of creating a truly versatile scooter.
The new Zoomer can be equipped with a wide range of accessories to make it a real
A rear carrier, which combines with the cargo area under the seat to make the
Zoomer an ideal shopping partner.
A large plastic box, which slips easily under the seat and can be locked, making it
perfect for carrying all the things you want to keep locked and out of sight. This box
can also be used together with a variety of side panels to accentuate your personalised
look while still being practical.
A black metallic painted grille covers both sides and the front of the under-seat space.
It can be used to carry larger objects under the seat.
A spider net is, of course, a multi-talented tool for securing gear. The Zoomer comes
pre-installed with the necessary hooks to make sure you'll find a transport solution for
every object you want to carry.
A frame mounted backrest enhances rider comfort. It can also be used in
combination with the rear carrier. Once again, looks go hand in hand with usefulness.
The eye-catching Zoomer already boasts a contemporary urban look in its
standard form. However, its 'bare-bones' construction just begs to be customised to
your own taste. Therefore plenty of accessories are being studied, which all have a
great visual effect on the Zoomer. Colours, chrome, plain black or anything in between,
these assorted parts make this THE scooter par excellence to personalise.
Side panels: Keep larger objects in place under the seat (when not using the underseat
box). Versions in black with a metal grille (3 sides) or in plain white panels for a
more "racy" version (2 sides) are available.
Hologram panels. Think a side panel is too plain? Why not mount attractive Zoomer
hologram panels on both sides of the seat? 3D visual effects on a scooter? Look no further.
Radiator covers: Several versions available. Oval and rectangular chrome covers
with horizontal cooling stripe or a meshed grille, and a gold coloured rectangular
cover are all you need.
Coolant tank cover: In addition to decorating the radiator, the coolant tank can also
be protected for a more integrated look. Gold or chrome coloured with horizontal
stripes, chrome with diagonal stripes or fully closed protection, it's up to you.
Oil temperature gauge: This beautiful silver or anodised blue temperature meter
replaces the oil dipstick. Oil temperature can be easily read anytime, and the gauge can
be used as a dipstick as well.
Racing footrests: These perforated aluminium footrests can be attached to the
Engine Type - Liquid-cooled 4-stroke 4-valve SOHC single
Displacement - 49.9cm³
Bore x Stroke - 38 x 44mm
Compression Ratio - 12 : 1
Max. Power Output - 3kW/7,500min-1 (95/1/EC)
Max. Torque - 4.5Nm/5,000min-1 (95/1/EC)
Idling Speed - 2,000min-1
Oil Capacity - 0.7 litres
Carburation - PGM-FI electronic fuel injection
Aircleaner - Cartridge-type paper filter
Fuel Tank Capacity - 5 litres (including 1-litre warning light reserve)
Ignition System - Digital transistorised with electronic advance
Ignition Timing - 15° BTDC (idle) ~ 25.4° BTDC (4,000min-1)
Sparkplug Type - ER8EH-N (NGK)
Starter - Electric/Primary kick
Battery Capacity - 12V/6AH
ACG Output - 210W
Headlight - 12V 35W x 2 (low) / 35W x 2 (high)
Clutch Type - Centrifugal; automatic
Transmission Type - V-Matic belt drive
Belt Converter Ratios - 2.850 ~ 1.200
Final Reduction - 13.708
Final Drive - V-belt
Frame Type - Low deck backbone; Aluminium die-cast + steel tube
Dimensions - (LxWxH) 1,860 x 735 x 1,025mm
Wheelbase - 1,265mm
Caster Angle - 26° 30'
Trail - 75mm
Turning Radius - 1.9m
Seat Height - 735mm
Ground Clearance - 145mm
Dry Weight - 84kg (F:36kg; R: 48kg)
Kerb Weight - 89kg (F:40kg; R: 49kg)
Max. Carrying Capacity - 112kg (total rider, cargo, accessories)
Loaded Weight - 164kg (F:68kg; R: 96kg)
Suspension Type - Front, 27mm telescopic fork, 49mm axle travel, Rear - Unit swingarm, 65mm axle travel
Wheels - Pressed steel
Rim Size - Front 10 x MT3.00, Rear - 10 x MT3.00
Tyre Size - Front, 120/90-10 57J, Rear - 130/90-10 61J
Tyre Pressure - Front 175kPa, Rear 175kPa
Brakes - Front, 95mm leading/trailing drum, Rear - 95mm leading/trailing drum