This is the full maintenance schedule for the Kawasaki Z400 (2018+) — when to change your air filter, spark plugs, and more. It’s also known as the ER400 or the Z400 ABS, though ABS is standard.
The Z400 is the successor to the Kawasaki Z300, but it is a superior motorcycle in every way. It’s more powerful AND it’s lighter. It shares a basic platform with the Kawasaki Ninja 400, but it is the naked version — so it’s more suited to everyday riding, and easier to work on (fewer fairing panels to remove).
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What you need to service your Kawasaki Z400
Servicing your Z400 is even easier than servicing your Ninja 400, as you have fewer fairing panels to remove! You just need a bunch of basic motorcycle maintenance tools, some floor space, and of course the following consumables.
|Part||Kawasaki Ninja 400 & Z400 Spec|
|Oil||You need 2.0L (2.1 US qt) of SAE 10W-40 engine oil “with API SG, SH, SJ, SL or SM with JASO MA, MA1 or MA2 rating”, preferably Kawasaki 10W-40 Engine Oil, or another multigrade synthetic like Motul 7100 or Mobil 1 Synthetic|
Don’t over-torque the drain bolt (spec is 30 Nm/22 lb-ft per the manual) — use a torque wrench if you don’t have experience with how much torque is enough.
|Oil filter||Oil filter is part 16097-0008, or you can use Hiflofiltro HF303RC. Torque for oil filter is 17.5 Nm (12.9 ft-lb) (use a torque wrench, and it’s easier on the aftermarket one)|
|Front brake pads||Genuine part number for front brake pads is 43082-0081 for Ninja or Z 300/400. Get double-sintered EBC brake pads for better bite and wear — code FA197HH.|
|Rear brake pads||Genuine part number for rear brake pads is 43082-0128 (or same as front… same pads!). Get double-sintered EBC brake pads for better bite and wear — code FA197HH.|
|Spark plugs||NGK LMAR9G, with a spark plug gap of 0.7-0.8mm, torqued to 13 Nm or 9 ft-lb (use a torque wrench)|
|Air filter||Use the K&N air filter KA-4018.|
|Cable lubricant||Remember to lubricate your clutch cable (and brake cables if you have them) with a cable lubricant. Protect All Cable Life is a good general-purpose lubricant.|
|Chain lubricant||The chain needs to be lubricated every 600 km/400 miles (or more, if it gets wet/dirty). Motul chain paste is cheap and well-loved.|
|Brake fluid||Spec is to use DOT-4 brake fluid.|
|Coolant||Use nitrate-free, phosphate-free, ethylene glycol-based coolant with anti-corrosion inhibitors, e.g. Valvoline Zerex G05|
|Grease||Use a lithium soap-based grease for all the important greasing points.|
Maintenance schedule for the Kawasaki Z400
Below is the full maintenance schedule for the Z400.
In the original manual, some items are mentioned as “dealer inspection”. Things like checking the idle speed or the coolant level. However, the bike is easy to service — it’s up to you if you want to take it to a dealer or not.
Notes on letters used:
- I = Inspect
- R = Replace
- L = Lubricate
- (C) Service more frequently in severe conditions: dusty, wet, muddy, high speed, or frequent starting/stopping
|km x 1000||1||12||24||36||48|
|mi x 1000||Every||0.6||7.6||15.2||22.8||30.4|
|Air cleaner element (*C) (K&N KA-4018)||R||R||R||R|
|Throttle control system (play, smooth return, no drag)||I,1 year||I||I||I||I||I|
|Engine vacuum synchronization||I||I||I||I|
|Fuel system||I,1 year||I||I||I||I||I|
|Fuel hose||R,5 years|
|Evaporative emission control system (CA only)||I||I|
|Coolant level (Zerex G05)||I,1 year||I||I||I||I||I|
|Cooling system||I,1 year||I||I||I||I||I|
|Coolant, water hoses, and O-rings||R,3 years||R|
|Air suction system||I||I||I||I|
|Clutch operation (play, engagement, disengagement)||I,1 year||I||I||I||I||I|
|Engine oil(*C) and oil filter (Kawasaki 10W-40 Engine oil or Motul 7100 + HF303RC)||R,1 year||R||R||R||R||R|
|Tire air pressure||I,1 year||I||I||I||I|
|Wheels and tires||I,1 year||I||I||I||I|
|Wheel bearing damage||I,1 year||I||I||I||I|
|Drive chain lubrication condition (*C) (Motul chain care kit)||I, 600 km (400 mi)|
|Drive chain slack (*C)||I, 1000 km (600 mi)|
|Drive chain wear (*C)||I||I||I||I|
|Drive chain guide wear||I||I||I||I|
|Brake system||I,1 year||I||I||I||I||I|
|Brake operation (effectiveness, play, no drag)||I,1 year||I||I||I||I||I|
|Brake fluid level||I,1 year||I||I||I||I||I|
|Brake fluid (front and rear) (DOT 4 only)||R,2 years||R||R|
|Brake hose||R,4 years|
|Rubber parts of brake master cylinder and caliper||R,4 years||R|
|Brake pad wear (*C)||I,1 year||I||I||I||I|
|Brake light switch operation||I,1 year||I||I||I||I||I|
|Suspension system||I,1 year||I||I||I||I|
|Lubrication of rear suspension||L||L|
|Steering play||I,1 year||I||I||I||I||I|
|Steering stem bearings||L,2 years||L||L|
|Electrical system||I,1 year||I||I||I||I|
|Spark plug (NGK LMAR9G)||R||R||R||R|
|Chassis parts||L,1 year||L||L||L||L|
|Condition of bolts, nuts, and fasteners||I||I||I||I||I|
Tyre sizes and pressures for the Kawasaki Z400
The manual specifies the following tire sizes, pressures, and brands (that it ships with, though people rarely stick with them).
|Tyre||Size||Tyre pressure (cold)||Brand(s) shipped with|
|Front||110/70R17 M/C 54H||200 kPa/28 psi||DUNLOP, SPORTMAX, GPR -300F N|
|Rear||150/60R17 M/C 66H||225 kPa/32 psi||DUNLOP, SPORTMAX, GPR -300 N|
About the Kawasaki Z400
The Z400 was first released in 2018 (launched a few months earlier), replacing the Kawasaki Z300, which was a similar motorcycle (a standard version of its stablemate the Ninja 300).
Like its stablemate, the Z400 is a very well loved beginner motorcycle. It’s not as favoured a track weapon as the Ninja 400 — fairings are useful for the higher speeds, especially with the relatively lower power output of the engine.
The 399cc water-cooled parallel twin doesn’t make a terribly inspiring sound, as you’d expect from a small engine with a 180 degree crank. It’s not a bike you’d bother putting an aftermarket exhaust onto.
But what the engine lacks in character it makes up for in revviness and willingness to fly way up the tachometer to high RPMs. This is where the Z400 is different to competitors like the Honda CB500F. On paper, they have similar specs. But the Z400 likes to rev — it puts out its peak power at 9,940 rpm, and peak torque at 8,270 rpm. This gives it a lively feeling and is a bike you can really get a lot out of in everyday riding without breaking the speed limit.
The Z400 is a great everyday motorcycle, too. It is comfortable, with high handlebars that only lean you forward a little. It comes with ABS as standard, unlike the Ninja 400 which asks you to pay a little more for it. And the Z400 is slightly cheaper. So if you don’t need (or want) those fairings, then opt for the Z.
Suspension and braking on the Z400 are simple and competent. There’s a single front disc, and only preload adjustability, but it gets the job done.
The Kawasaki Z400 is easy to maintain, too. Most maintenance intervals just ask you to “check” things — the only things to replace regularly are the oil, and periodically some of the other vital fluids like brake fluid. In fact, the Z400 is such a great everyday sportbike that many people downsize to it from bigger bikes.
Just keep the fluids up to date, check the valves, replace brakes pads and the chain occasionally, and it’ll go forever… until you crash it.
Manual for the Kawasaki Z400
The above maintenance schedule was transcribed from the manual for the Z400.
You can download it from Kawasaki’s website here.