Engine

Troubleshooting

How does a Ninja 250 engine work?

EX250 parts diagrams

Do I really have to follow this break-in period?

Warming up your engine

Do I have to do this 500 mile service?

Engine Oil

How do I adjust the valves?

Changing the spark plugs & brands to avoid

My oil pressure light comes on during heavy braking

Checking engine mount bolts

What's the redline of my bike's engine?

What is the engine idle speed? How do I adjust it?

What is the correct way to apply choke at startup?

What can I do if I flood it?

Why does my bike take so long to reach normal running temperature?

What are those tubes hanging down from the bike for?

An overview of the cooling system

How do I service the cooling system?

Adding an oil cooler

Why performance mods might not be good for you

How do I replace the sight glass?

Helicoil insert for a stripped spark plug hole

How long will a Ninja 250 engine last?

Cam chain tensioner removal

Engine number and year of manufacture

How to build your own track bike

What is involved in removing/rebuilding the engine?

I want an engine stand for my 250

I want to put a bigger engine in my Ninja

Just how small is a 250 engine?

Service Schedule

Torque Values

I Need Recommendations For Tools/Parts

I am having trouble putting my bike on its centerstand

Supporting Your Bike While Servicing