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Kawasaki ER-6n Maintenance Schedule and Service Intervals

2010 Kawasaki ER-6n Stock Image

This is the maintenance schedule with associated service intervals for the Kawasaki ER-6n.

The Kawasaki ER-6n is the naked sibling of the Ninja 650, a.k.a. the ER-6F (the “n” in ER-6n is for “naked”). It’s very much the same bike, just sans fairing!

Kawasaki has made the ER-6n since 2006, but only sold it in the US since 2009. It was retired in 2018 in favour of the Kawasaki Z650, which was updated at the same time as the Ninja 650.

The ER-6n is powered by a torquey 649cc liquid-cooled, DOHC, four-valve-per-cylinder parallel-twin engine. It’s the same engine that powers other similar motorcycles, like the Versys 650. It doesn’t set your hair on fire, but it’s an engine that most people can’t kill before they crash their bikes.

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Maintenance Schedule for Kawasaki ER-6n

Below is the maintenance schedule for the Kawasaki ER-6n.

The following is the list of maintenance operations and to be done on this motorcycle with a time or distance interval — whichever comes earlier.

The maintenance for the Kawasaki ER-6n is broken into three sections: Engine Related Items, Chassis Related Items, and Change/Replacement Items.


  • For higher odometer readings, repeat at the frequency interval established here.
  • # : Service more frequently when operating in severe conditions: dusty, wet, muddy, high speed, or frequent starting/stopping.


  • I = Inspect
  • L = Lubricate
  • R = Replace
  • C = Change

Periodic Maintenance — Engine

km x 1000161218243036
mi x 10000.63.757.511.251518.7522.5
Valve clearanceI
Throttle control system (play, smooth return, no drag)yearIIII
Engine vacuum
Idle speedIIII
Fuel leak (fuel hose and pipe)yearIIII
Fuel hoses damageyearIIII
Fuel hoses installation
Coolant levelIIII
Coolant leakyearIIII
Radiator hose damageyearIIII
Radiator hoses installation
Evaporative emission control system (California)IIIIIII
Air suction system damageIII
Periodic Maintenance – Engine of Kawasaki ER-6n

Maintenance of the Chassis of a Kawasaki ER-6n

km x 1000161218243036
mi x 10000.63.757.511.251518.7522.5
Clutch and drive train:
Clutch operation
(play, engagement,
Drive chain lubrication
condition # (Motul chain paste)
600 km (400 mile)
Drive chain slack #1000 km (600 mile)
Drive chain wear #III
Drive chain guide wearIII
Wheels and tires:
Tire air pressureyearIII
Wheels/tires damageIII
Tire tread wear, abnormal wearIII
Wheel bearings damageyearIII
Brake system:
Brake fluid leakyearIIIIIII
Brake hoses damageyearIIIIIII
Brake pad wear #IIIIII
Brake hose installation conditionyearIIIIIII
Brake fluid level6 monthsIIIIIII
Brake operation
(effectiveness, play, drag)
Brake light switch operationIIIIIII
Front forks/rear shock absorber operation (damping and smooth stroke)III
Front forks/rear shock absorber oil leakyearIII
Steering System:
Steering playyearIIII
Steering stem bearings2 yearsL
Electrical System:
Lights and switches operationyearIII
Headlight aimingyearIII
Side stand switch operationyearIII
Engine stop switch operationyearIII
Chassis partsyearLLL
Bolts and nuts tightnessIIII
Maintaining the Chassis of a Kawasaki ER-6n

Items to replace on a Kawasaki ER-6n

km x 1000112243648
mi x 10000.67.51522.530
Air cleaner element #2 year (R)
Engine oil # yearCCCCC
Oil filteryearRRRRR
Fuel hoses4 yearsR
Coolant3 yearsR
Radiator hoses and O-rings3 yearsR
Brake hoses and pipe4 yearsR
Brake fluid (front and rear)2 yearsRR
Rubber parts of master cylinder
and caliper
4 yearsR
Spark plugCCCC
Kawasaki ER-6n — items to change/replace

Tyre size and tyre pressure for the Kawasaki ER-6n

The Kawasaki ER-6n has the following tyres and tyre sizes standard, as well as the following recommended tyre pressures.

WheelTyre sizeTyre pressure (cold)Shipped tyre brands
Front120/70 ZR17 M/C (58W)225 kPa/32psiDUNLOP SPORTMAX ROADSMART CQG
Rear160/60 ZR17 M/C (69W)250 kPa/36psiDUNLOP SPORTMAX ROADSMART G
Kawasaki ER-6n tyre sizes and pressures

General information about the Kawasaki ER-6n

The Kawasaki ER-6n is an affordable bike that’s easy to ride and which outperforms considering how cheap and simple it is.

The ER-6n is a member of Kawasaki’s parallel twin-powered family of middleweights. It’s powered by the same 649cc 180-degree parallel-twin water-cooled engine that powers the Ninja 650, Versys 650, and Vulcan S. It’s not a terribly inspiring engine, but it makes torque everywhere you need it, and easily takes riders to speeds north of 180 km/h where a naked bike starts to feel like maybe it doesn’t belong (probably far below that for most mortals).

The Kawasaki ER-6n’s beauty is in its versatility. It’s near perfect as a commuter motorcycle — lightweight, simple, difficult to stall, easy to steer, and very, very reliable. In fact, I’ve never seen a ER-6n ruined through anything other than neglect or a crash. The engine will, if serviced, regularly go past 100,000 km (60,000 miles) without even sounding different. Many owners even forego valve inspections (but they really shouldn’t).

A few things that make the ER-6n easy to ride are the lightweight clutch, neutral finder in the transmission, and very clear display.

While the ER-6n only makes modest power, it’s still a popular choice for a track day bike as it’s so cheap to service, change tyres for, and (if necessary) replace if it’s totalled. It’s tempting for new owners to replace the exhaust, but the reality is that the first modifications you should make to the ER-6n, if you planning on pushing it hard, are to the suspension and brakes.

Manual for the Kawasaki ER-6n

Kawasaki ER-6n Maintenance Schedule Screenshot From Manual

The above maintenance schedule comes directly from the user’s manual for the Kawasaki ER-6n, which is available here.

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