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What’s the Difference between the first Kawasaki Air-Cooled 4-Cylinder Engine Z2 and Z1 with a Robust Design

Before the reverse-engine boom began, the models of our dreams were only seen in overseas reports in motorcycle magazines, but now they are coming back to Japan as reimported used models. One of the m...
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Halfway work is strictly prohibited! But a selection of useful tools for disc brake maintenance

Stopping performance is absolutely more important for a motorcycle than running performance.To achieve this, brake maintenance is indispensable, but if you do not have the knowledge or experience, it ...
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What is the Internal Combustion Machining of a Malfunctioning Engine Repair Point Cylinder Head?

Whether it is a 4-cylinder multi-cylinder engine or a single-cylinder engine on a moped, the cylinder head is a major determinant of whether a 4-stroke engine is in good shape or not.We often hear the...
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Easy and Simple Work with Tools When Repairing a Flat Tire or Changing a Tire Tube

There are various know-hows and things to do during the work process in the case of tube tires instead of puncture repair of tubeless tires for medium and large bikes.Here, let's practice working with...
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When Performing a Carburetor Overhaul on a Motorcycle that has been Stored for a Long Time or been Immobilized, the Fuel Joint O-rings should also be Replaced!

Carburetors can change the fuel in the float chamber in as little as a few months. An overhaul is essential to remove dirt and debris clogging the jets and passages. At that time, multi-carburetors wi...
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When you have a Carburetor Car with Poor Starting or Discrete Burnt Plugs, Suspect a Clogged Pilot System!

A 4-cylinder engine that has no problems with the engine itself and the jets and needles are numbered correctly, but one cylinder does not ignite at idle and the plugs are burned in different ways. If...
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Procedure in Replacing Bulb out of Headlight! Be careful When replacing!

From large motorcycles to moped models, headlights are now always on, even during the daytime. When replacing the bulb=glass bulb, rather than the LED-based headlights that are common in newer models ...
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Useful Techniques for Drive Chain Lubrication. A Sheet of Newspaper Prevents Splattering on Tires!

Maintenance is essential for drive chains to reduce friction loss and prevent rust. When cleaning and lubricating the chain with chain oil, care must be taken to prevent it from splashing onto the rea...
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Ways to Magnets and Vacuum Cleaners: Increase the Efficiency of Fuel Tank Rust Removal

Older motorcycles, discontinued, and motorcycles that have been neglected for a long time more or less face the problem of rust in the fuel tank.Currently, mainstream neutral rust-removing chemicals a...
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Knipex Pliers Wrench: All-Purpose Tool to Turn Bolts and Nuts Without Problem

It is a common maintenance practice to use eyeglass wrenches and socket wrenches in preference when turning bolts and nuts and to avoid using wrenches and monkey wrenches as much as possible. However,...
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A Strong Ally for Cowl and Fender Cracks. Repair Techniques Using Plastic Welding Kits

Resin parts such as ABS and PP, which are lightweight and can be used in complex shapes, are popular for side covers, front and rear fenders, and most exterior parts on scooters. They are often replac...
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The Battery often runs out of Power! In such a Case, Let’s Inspect the “Power Generation and Charging System”!

The battery tends to run up! There are many factors that can cause this.Here, let us focus on how to reconfirm the basic functions of the electrical system. What is the condition of the power output f...
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MAINTENANCE: Use a Compression Gauge to Visually Check if the Engine itself is Performing Well or Not

Whether it is a 2-stroke or 4-stroke engine, a single-cylinder engine or a multi-cylinder engine, if you like tinkering with motorcycles, you must own a compression gauge (compression tester).Owning t...
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Is it necessary to Warm the Motorcycle during Summer? Wrong Warm-Up Method can Damage the Engine! Check the Right Process

Everyone feels that if it is cold weather, it would be better to ride warmer.But what about during the hot summer months? If the motorcycle is parked in direct sunlight, the surfaces will be too hot t...
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Screen Scratches can be Regenerated by Polishing. Glowing Screen is Beautiful!

The screen for the front cowl was clear and shiny when the motorcycle was new.Whether it is a lightweight component for racing or a thick and sturdy genuine part, you may notice minor scratches that s...
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DAX125 Maintenance: What is the Work Method if the Side Stand Makes it Hard to Adjust the Chain?!

Many sport bikes from the 1990s onward do not have a main stand (center stand) and are side stand-only models. When adjusting the drive chain on such bikes, the rear tire is not floating, which is kno...
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[DIY Restoration by Red One] Managed to Revive the Water-Cooling System

This time, I would like to talk about the regeneration of the water-cooling system, which I believe is the reason why my CBR1000F (SC21) became immobilized.Since the SC24, the successor to the SC21, t...
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【PIRELLI】DIABLOMAN One Point Lesson: “Air Pressure for Track Riding”

Here's a one-point lesson from DIABLOMAN. Why do you lower the internal pressure when riding on the track? Riders who participate in circuit track days, etc., should often lower the air pressure befor...
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QUESTION: Wanting to Know the Tire Pressure

There is too much difference between the air pressure for the circuit and the finger pressure for public roads, and I want to know what is really going on! ANSWER: There is no problem without changing...
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Pay Attention to Pilot System Rather than Main System when Overhauling a Carburetor that has Been Left Unattended for a Long Period of Time

Whether the vehicle is carbureted or fuel-injected, the fuel in the fuel system must be replaced regularly or it will deteriorate and cause sticking. If a motorcycle has not been ridden for a long per...
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