Yamaha Jog scooter: characteristics, photos

The Japanese compact scooter Yamaha Jog is designed for driving on city streets and has an appearance close to a sporty style. Two-wheeled vehicles are distinguished by excellent maneuverability, a sensitive gas handle and high technical parameters. Operating a moped does not require a driver's license, since the volume of the power unit is 49 cubic centimeters. At the same time, the scooter has several modifications that differ in engine power and some other elements (frame design, types of brakes, type of cooling, body kit, wheels).

Models

Next, we will consider the parameters and features of the main modifications of the moped. Let's start the review with the Yamaha Jog ZR variation. The model is considered the most powerful and dynamic of the series under consideration. The scooter features short-travel sports shock absorbers, disc brakes, and a modern LCD screen. Modern technologies are used in its production.

Characteristics:

length/width/height – 1625/665/1020 millimeters;
start of production - 1999;
curb weight – 70 kg;
engine volume – 49 cubic centimeters;
cooling type – atmospheric option;
cylinder diameter – 40 millimeters;
maximum power indicator – 6.8 “horses” at a maximum speed of 7 thousand rotations per minute;
fuel/oil tank capacity – 7.3/1.3 liters;
brake type: all disc;
maximum speed – 60 kilometers per hour;
transmission unit - CVT three-speed system with steering switch;
ground clearance - 105 mm;
tires – 90/9;
load capacity is 150 kilograms.

Peculiarities

The Japanese scooter Yamaha Jog ZR version meets most of the requirements of small sports equipment. It is worth considering that the maximum that can be achieved in terms of speed is 75 km/h with a forced engine. Consequently, in real racing events this moped can objectively participate only among equipment of an identical class. At home, the unit is produced exclusively with standard engines with a speed limit of 60 km/h.

The scooter is equipped with a powerful stepless variator, allowing maximum use of the traction of the power unit. With full tuning of a scooter, its resource is reduced by one and a half times. However, engine repair is not particularly difficult. Since sports models are purchased by fans of extreme driving, this factor plays a significant role.

Appearance

The scooter, originally from the 90s, has a corresponding appearance: rounded lines, small turn signals built into the steering wheel. A characteristic feature of this model is a small protrusion on the front of the case. A basket rests on it, which can be installed additionally, but this is not the only purpose of the protruding structure. On the driver's side, between the legs, there is a spacious pocket that can accommodate hand luggage.

Yamaha Jog Aprio 4JP 50cc cm.

At the rear of the scooter there is a classic rectangular headlight and a rear rack. The model has a fairly wide footrest, which will be needed by people of the same build.

The dashboard is also classic for those years. There are only 3 sensors on it:

speedometer;
fuel level sensor;
odometer.

The panel is secured with 3 bolts.

The front and rear are perfectly balanced and the Aprio 4JP has a standard fit. This is where the main difference from other Jog offshoots comes in - most of them have a highly angled seat to provide better aerodynamics to the rider when driving at high speed.

Maximum speed 60 km/h (electronically limited).

Overall, the Aprio is a scooter with an “elite” design that is unlikely to appeal to the younger generation. But it will appeal to fans of classic scooters without sharp shapes and original design solutions, as well as to beginners for whom design does not play a decisive role when choosing their first equipment.

The model is compact and has a small wheelbase, which also affected the dry weight, but more on that later.

Yamaha Jog Next Zone

The sports model of this modification is distinguished by high power in the class of 50 cc mopeds. It is great for city driving and was produced from 1995 to 1999. Despite the reliability and dynamism of the scooter, we can say that it gradually left the wide market due to an acute shortage of spare parts on sale.

Below are the main parameters of this scooter:

length/width/height (along the handlebar) – 1.6/0.64/1.0 meters;
the distance between the axles is 1.13 m;
ground clearance - 10 centimeters;
load capacity indicator - 150 kilograms;
moped weight – 62 kg;
power – 7.0 l. With. at 7000 rpm;
compression ratio – 7.3;
engine - 3KJ, single-cylinder, two-stroke;
the fuel tank holds five and a half liters of gasoline;
oil tank (volume) – 1.2 l;

In addition, the Yamaha Jog moped of this series is equipped with a front ventilated, rear drum brake and a shortened sports suspension. An undoubted advantage is that the model starts even at very low temperatures (-18 degrees).

Technical specifications of Yamaha Jog Aprio

The characteristics of the Yamaha Jog Aprio scooter are standard for older Yamaha scooters. A standard and proven combination of a 2-stroke engine with forced air cooling and a CVT transmission with kickstarter is used.

Engine 3KJ

The engine in the Yamaha Jog Aprio is a topic that we can talk about endlessly. The 3KJ power unit is installed here - a two-stroke single-cylinder with 6.4 horsepower, accelerating to 60 km/h (in stock). Its main feature is incredible reliability. All owners note the unpretentiousness of the engine and its low operating temperature, which is why many Aprios travel tens of thousands of kilometers just replacing consumables.

If you need to find spare parts for the engine, you can do this at any time. They are produced by European, Taiwanese and Chinese manufacturers.

Transmission

The scooter is equipped with a variator in conjunction with an electric starter and a kickstarter. The scooter has a Capactor Discharge Ignition system - a capacitor ignition system.

The front suspension of the Jog Aprio is telescopic, the rear suspension is pendulum.

There are always drum brakes with spring shock absorbers at the rear, and disc or drum brakes at the front.

At the time of buying ! Different brakes are installed on the front wheel of the Aprio depending on the year of manufacture.

Fuel consumption Yamaha Jog Aprio

The declared fuel consumption for this scooter is 1.61 l/100 km. With mixed consumption, the figure varies in the range of 2 l/100 km, taking into account a cruising speed of 30 km/h. With active gas operation and driving at high speeds, consumption increases to ~2.2 liters. A fuel tank of 4.5 liters is enough for 210-220 km with moderately active driving.

Jog Aprio transmission type - variator (belt).

Engine – 3KJ, 2-stroke, 1-cylinder;
Power unit volume – 49 cm3;
Cylinder diameter – 40 mm;
Piston stroke – 39.2 mm;
Compression ratio – 7.3;
Power supply system – carburetor;
Engine power, (hp/rpm) – 6.4 /6500;
Torque, (kg*m/rpm) – 0.75 /6000;
Cooling – air;
Average fuel consumption – from 1.61 liters/100 km;
Maximum speed – 60 km/h;
Gas tank volume – 4.0 liters;
Oil tank – 0.8 liters;
Front brake type – drum;
Rear brake type: drum;
Tire size (front/rear) - 80/90-10;
Front suspension – telescopic;
Rear suspension – pendulum;
Gearbox – variator (V-belt);
Start type – kickstarter/electric starter;
Scooter dimensions, (L x W x H) – 1615 x 630 x 1000 mm;
Ground clearance – 100 mm;
Seat height – 700 mm;
Wheelbase – 1135 mm;
The dry weight of the scooter is 61 kg.

Advantages and disadvantages

Advantages:

Comfortable fit.
The most reliable engine.
Plenty of storage space for luggage.
Low dry weight.
A huge amount of tuning.
High ground clearance.
Controllability.

Flaws:

Outdated design.
Low maximum speed (stock).
Fragile plastic.
Frame strength is mediocre.

Artistic version

This modification was released in 1989 and is intended for beginner motorcyclists. The scooter has simplified controls and not as fast dynamic performance as its relatives. Despite the fact that in terms of acceleration and speed parameters it is not the most active in its class, its undeniable advantage is its regularity, which is important for beginners who want to learn the basics of proper riding on a two-wheeled motorized vehicle.

Characteristics of the Yamaha Jog Artistic scooter:

initial production period - 1989;
length/width/height – 1615/640/1005 mm;
curb weight – 60 kilograms;
engine – two-stroke single-cylinder engine with a volume of 49 cubic meters;
load capacity is 150 kg;
cylinder size – 4 centimeters in diameter;
type of cooling – forced atmospheric exposure;
compression – 7.3;
revolutions – 6500 rotations per minute;
power indicator - 6.8 horsepower;
piston movement - 39 millimeters;
gas distribution system – petal valve type;
speed threshold – 60 kilometers per hour;
fuel tank volume – 5.5 l.

In addition, the model in question is equipped with a three-speed transmission unit with a wedge variator and gear shift on the steering wheel. For every 100 kilometers the device consumes about 1.6 liters of fuel. The front and rear brakes are self-adjusting drums.

Scooter parameters

The dimensions of the Yamaha Jog Aprio 4JP scooter are as follows:

Maximum length – 1615 mm.
Maximum width – 630 mm.
Maximum height – 1000 mm.
Ground clearance – 100 mm.

Jog Aprio, seat height – 700 mm.

The dry weight of the case is 61 kg, which is an extremely low figure among “classmates”. The wheelbase size is 1135 mm. Maximum load capacity is about 150 kg. The scooter is not a two-seater, so it is extremely inconvenient to carry a passenger with you.

Differences between the Yamaha Jog APRIO 4LV and the 4JP model

The 4LV and 4JP models do not have any noticeable external or technical differences between themselves; they have different frame numbers to indicate the year of manufacture. Both designations imply the same inexpensive and reliable scooter produced by a global manufacturer. The scooters are equipped with the latest ignition system. The first models were equipped with the most reliable 3KJ engine in the world, on the basis of which a prototype was later created, but it is not so highly reliable.

On the left in the photo is the Yamaha Jog APRIO frame model 4JP, on the right is the 4LV model

The scooters also differ from the rest of the line in electronics: the limit in Aprio is set at 60 km/h, which would seem to be mortally low, but this became the reason for the development of many tuning elements that increase power.

The presented model is associated with the installation of the switch and other additional parts. Aprio can be compared with the Lets line from the manufacturer Suzuki, because they were also aimed at comfortable and maneuverable movement around the city, but had an electronic limiter.

Modernized modification

The improved version was called Yamaha Super Jog. The restyled model is equipped with a reinforced frame of a special configuration, which has become lighter by almost four kilograms. In addition, changes affected the plastic elements of the front part, which were located at a more acute angle. They give the appearance of the moped aggressiveness and sporty features.

Technical parameters of this version:

length/width/height – 1625/660/1020 mm;
ground clearance - 85 mm;
ignition type – electronic contactless unit;
starting type - electronic/kickstarter;
power unit - two-stroke engine with one cylinder (49 cc);
cooling - water contour type;
compression degree – 7.3;
transmission unit - variator, which is aggregated through a V-belt with a working unit;
power indicator at 7 thousand rpm – 7.0 horsepower;
cylinder diameter/piston displacement – 40/39.2 millimeters;
the weight of the loaded scooter is 66 kg without passengers and driver;
load capacity – 150 kilograms;
The volume of the fuel/oil tank is 4/1.0 liters.

Also, the scooter of this modification is equipped with a telescopic front fork and a rear shock absorber of an articulated pendulum type. The front brakes are ventilated disc brakes, the rear brakes are self-adjusting drums. The suspension allows you to increase the softness of the ride and dampen vibrations from potholes, and the braking system ensures a quick and safe stop of the vehicle.

Other representatives

Next, we will briefly consider the characteristics that the Yamaha Jog Aprio moped has, as well as modifications that were still produced in mass production.

Parameters of the Aprio model:

year of manufacture – 1993;
motor – two-stroke power unit with a volume of 49 cubic centimeters with one cylinder;
compression – 7.3;
torque - 7.5 Nm at 6 thousand rpm;
fuel consumption per 100 kilometers – 1.5 liters;
maximum power – 6.4 “horses”;
intake system – reed valve;
fuel/oil tank (volume) – 4.0/0.8 l;
the maximum speed is 60 kilometers per hour.

In addition, from 1989 to 2006, the Japanese company produced versions of scooters under the indexes Space, Z2, R, Evolution, which differed slightly from the modifications considered.

Adjusting the Yamaha Jog Carburetor

Proper adjustment of the Yamaha Jog carburetor ensures long service life. Some adjustment tips:

Before removing the carburetor, notice all connectors and connections, clean from external contaminants
all elements are washed using only solvents and carburetor cleaners; jets, air and fuel channels are purged
mechanical and chemical cleaning is not carried out - this leads to deformation of the dosing elements
the fuel level in the float chamber is regulated by extending the metal float plate, which has a shut-off needle
Normally, deposits on the spark plug are brick-colored with a light brown tint.
By changing the damper angle they control the fuel-air mixture
cold start has three application variations:
thermomechanical (on the cylinder head there is a bimetal plate control sensor with carburetor tubes, the carburetor contains a membrane block that moves the valve through vacuum) - more often on older models;
electronic (a mechanism that is self-adjusting and has a thermocouple);

What do the owners say?

User reviews agree on many points. Owners note the reliability of the engine and its maintainability. Many are pleased with the excellent driving performance, maneuverability and excellent dynamics. Thanks to the combination of all its characteristics, the Yamaha Jog scooter is the optimal means of transportation around the city in its class.

Preventive and maintenance maintenance of a moped comes down to timely oil changes, filling it with fuel, and cleaning the chassis and filter elements from dirt. Economy also adds to the benefits of this two-wheeled mini motorcycle. The moped is available in several modifications and colors, which allows you to choose the best option according to your personal preferences.

Carburetor operation

The scooter engine is very powerful in any modification, starting from 6.3 horsepower. The Yamaha Job carburetor has a starter enricher. When the engine is cold, when it is turned on, the retracted locking action of the enricher allows the combustible mixture to enrich itself. After turning on the engine, the generator current goes to the heating element, which, when heated, expands and blocks the enrichment channel.

The existing centrifugal automatic clutch and V-belt variator determine the high-quality and durable operation of the transmission.

Cooling system: air, forced type. Air is pumped to the cylinder cooling jacket by means of a fan.

The oil pump contains a worm drive that comes from the scooter's crankshaft.

These characteristics of the Yamaha Jog scooter allow you to move off smoothly and gently, and when the speed increases to 10 km/h, it is quite brisk and quickly picked up without any special dips or catches.

Conclusion

The Japanese-made Yamaha Jog scooter has gained popularity all over the world for good reason. The determining factor was the reliable power unit, which was not radically modernized throughout the entire serial production. At the same time, it remains one of the best engines in the 50 cubic centimeter class.

The moped in question is suitable for both young people and older people. There are modifications for beginners that do not react so sharply to turning the throttle. We can say that Japanese developers have released one of the most successful lines in the category of light scooters, the parameters of which are superior to larger motorcycles in many respects.

Flaws

Abundant fuel consumption.
Difficulty driving on dirt roads (small wheel diameter).

Overall, this scooter is an excellent choice for a beginner who is just starting to get used to 2-wheeled vehicles. Simple controls, high maneuverability and perpetual motion will bring a lot of positive emotions. With careful use, there should be no problems with maintaining the scooter. All that remains is to replenish the oil tank in time. Also check the plastic from time to time, which sometimes weakens when driving over uneven surfaces. In all other respects, the scooter is not fancy.

Aprio is also an ideal choice for gentle girls who are also in demand for freedom of movement. Light weight, simple controls and “modest” overall dimensions make Aprio the most suitable option for girls and even children.