CFMOTO 650NK (2017+) Maintenance Schedule and Service Intervals
This is the maintenance schedule and service intervals for the CFMOTO 650NK made from 2017 onward. CFMOTO also made the 650NK from 2012-2016, but for 2017 they revised some of the ride components (including adding ABS) and exterior design.
The 650NK is in the “affordable middleweight naked” category, competing with the Yamaha MT-07 and Kawasaki Z650, but mainly on price point.
The CFMOTO 650NK is powered by a 649cc liquid-cooled parallel twin DOHC eight-valve engine with a 180-degree crank, similar to that found in the Kawasaki Z650. In the 650NK, the engine makes peak power of 52 kW (70 hp) at 8750 rpm. But it’s often sold in learner-restricted format, making 41.5kW (55hp) at 9500 rpm, with peak torque coming in at 7000 rpm at 62 Nm (45 ft-lb) on both models.
The CFMOTO 650NK 2017+ version got better brakes by J. Juan, an LCD dash, and better exterior design with help from Kiska, KTM’s design firm.
The same motor is also in CFMOTO’s middleweight adventure touring offering, the CFMOTO 650MT.
In 2021 CFMOTO has announced the 2021+ CFMOTO 650NK SP, which has the same motor but with a few enhanced features like ride modes, a slipper clutch, a TFT display, and Pirelli Angel GT tyres.
Originally published Sep 25 2021, but considerably updated.
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CFMOTO 650NK Service Intervals
The general maintenance for the CFMOTO 650NK is a minor service every 6000 km / 4000 mi, at which you change the oil and filter and do a once-over of the safety equipment (brakes, suspension, etc.).
The more major service is every 12000 km / 8000 mi, when you change the spark plugs, clean the air filter (or replace it), and do a more thorough once-over of the bike.
Valve service intervals are a separate service on the 650NK, 42000 km / 26000 mi apart.
Aside from that, replace fluids (brake fluid, coolant) and rubber parts periodically as they wear, and keep the motorcycle lubricated.
What you need to service the CFMOTO 650NK
To service the CFMOTO 650NK, apart from general motorcycle maintenance tools, you also need the following consumables.
|Part||CFMOTO 650NK spec|
|Engine oil||CFMOTO recommends SAE 15W-40 motorcycle oil that meets API SG or above.|
|Spark plug||NGK CR8EI is the standard spec|
|Coolant||Any 50% ethylene glycol-based coolant that has corrosion and rust inhibitors and that’s aluminium safe. Honda coolant is an affordable and high-quality option.|
|Brake fluid||Use DOT 4 brake fluid only.|
|Cable lube||Use engine oil or cable lubricant. Protect All Cable Life is a cheap and popular choice.|
|Cable maintenance||Regularly clean and maintain your cable. A Motul chain care kit is a good choice.|
Maintenance schedule for the CFMOTO 650NK
Below is the maintenance schedule for the 650NK.
This is adapted from the manual but it has been re-ordered and simplified for clarity, and combined into one table.
The general maintenance for the CFMOTO 650NK is a minor service every 6000 km and a major one every 12000 km. Aside from that, replace fluids and rubber parts periodically.
- Past the end of the maintenance schedule, keep following it in the order shown. Some items are infrequent, e.g. valve service or replacing some fluids.
- The break-in maintenance is omitted, as usually dealers do this (and it’s necessary to maintain the warranty)
- The manual recommends replacing engine oil and filter every six months even if the bike isn’t ridden. This is very aggressive and uncommon — use your own judgment.
|km x 1000||6||12||18||24||30||36||42||48|
|mi x 1000||4||8||12||16||20||24||28||32||Every|
|Engine and fuelling|
|Engine oil||R||R||R||R||R||R||R||R||Replace every 6 months|
|Oil filter||R||R||R||R||R||R||R||R||Replace every 6 months|
|Air cleaner element – Clean or Replace||C||C||C||C||Replace every 2 years|
|Air suction system – inspect for damage||I||I||I||I|
|Valve clearances – inspect||Check every 42000 km|
|Throttle control system – inspect for free play, smooth return||I||I||I||I||Inspect every year|
|Fuel hose and pipe – inspect for fuel leaks, damage, and correct installation||I||I||I||I||Inspect every year|
|Fuel hoses – replace||R||Replace every 4 years|
|Coolant (inspect level, system for leaks, or replace)||I||I||R||I||Replace every 2 years|
|Radiator hose – inspect for damage and correct installation||I||I||R||I||Inspect every year, Replace every 2 years|
|Brake fluid level – Inspect or Replace||I||I||I||R||I||I||I||R||Inspect every 6 months|
Replace every 2 years
|Brake hose/pipe – inspect for leaks, hoses/pipe damage, and hose installation, replace periodically||I||I||I||I||I||I||I||R||Inspect every year|
Replace every 4 years
|Rubber parts of master cylinder and caliper||R||Replace every 4 years|
|Brake pad wear – inspect, replace as necessary||I||I||I||I||I||I||I||I|
|Brake operation(effectiveness, play, drag) – inspect||I||I||I||I||I||I||I||I||Inspect every year|
|Brake light switch operation – inspect||I||I||I||I||I||I||I||I|
|Clutch operation – inspect play, engagement, disengagement||I||I||I||I|
|Drive chain – inspect condition, lubricate||600 km (or when it gets wet/dirty)|
|Drive chain slack – inspect|
Drive chain slack should be 30-40mm deflection at its loosest point
|Drive chain wear – inspect||I||I||I||I|
|Drive chain guide wear – inspect||I||I||I||I|
|Wheels and tyres|
|Tyre air pressure – inspect||I||I||I||I||Check every year|
|Wheels/tyre damage – inspect||I||I||I||I|
|Tyre tread wear, including abnormal wear – inspect||I||I||I||I|
|Wheel bearing damage – inspect||I||I||I||I|
|Steering and Suspension|
|Front forks/rear shock absorber operation (damping and smooth stroke) – inspect||I||I||I||I|
|Front forks / rear shock absorber oil leak – inspect||I||I||I||I||Check every year|
|Steering play – inspect||I||I||I||I|
|Steering stem bearings – lubricate||L||L||Lubricate every 2 years or 24000 km|
|Coupling assembly, RR, hub – inspect||I||I||I||I|
|Damper, shock, RR, hub||R||R||R||R|
|Lights and switches operation – inspect||I||I||I||I||Check every year|
|Headlight aiming – inspect||I||I||I||I||Check every year|
|Side stand switch operation – inspect||I||I||I||I||Check every year|
|Engine stop switch operation – inspect||I||I||I||I||Check every year|
|General lubrication and tightening|
|Brake and gear shift pedals – lubricate||L||L||L||L|
|Chassis parts – lubricate||I||I||I||I||Lubricate every year|
|Bolts and nuts tightness – inspect/adjust||I||I||I||I||Check every year|
More about the CFMOTO 650NK
The CFMOTO 650NK is a middleweight naked bike competing against the Japanese offerings. It’s a high-quality and well-featured bike, but nevertheless as a Chinese-made motorcycle, its primary selling point is that it’s a cheaper alternative to Japanese middleweight motorcycles.
Despite being positioned as a “cheaper” bike, the 650NK is an attractively built and well-specified bike. The engine is a capable one, having basically the same configuration as that in the venerable Kawasaki Z650 — a 649cc parallel twin with a 180-degree crankshaft, giving it a bit of bark. The engine has all the things you’d expect from a modern engine design: dual overhead cams, eight valves (four per cylinder), liquid cooling, and fuel injection.
The power that the 650NK makes is typical for its class. In full-power spec, it makes 52 kW (70 hp) at 8750 rpm, and in restricted (LAMS in Australia/NZ) format its power is modest but enough — 41.5 kW (55 hp) at 9500 rpm, which is enough to get you well over any speed limit, even though it won’t be accelerating past freeway speeds that aggressively — you have to drop a gear for quick passes.
The ride gear on the 650NK is also good — definitely not the worst, without being superbike spec. There are dual 300mm front disc brakes with two-piston calipers, and a single disc at the rear. The suspension is via 41mm telescopic forks (non-inverted, and non-adjustable), and a single rear shock that you can adjust for preload. None of this is terribly surprising, but also not disappointing, either.
The suspension is Kayaba-developed and Chinese-built, meaning it has a quality design, but is still affordable.
The 2017 model CFMOTO 650NK brings a number of improvements over the outgoing 2012-2016 model, including
- Refreshed visual design, thanks to Kiska, KTM’s design firm — KTM and CFMOTO have been sharing a lot of technology and resources in recent years
- Optional (or non-optional, depending on market) ABS
- Ride modes (though reviewers say it’s hard to tell the difference)
- An LCD dash
- Less weight (13kg dry weight difference)
- More function — better mirrors (vibration-free), better lights (LED), and a few more details.
Maintaining the 650NK is easy and cheap. Many parts are readily available considering the bike hasn’t changed fundamentally since 2012. Keep the chain lubricated and replace the fluids regularly, and it’ll be a long time before you get to the valve service — 42000 km is a nice and wide interval.
Wheel and tyre specs/pressures for the CFMOTO 650NK
The 650NK has tubeless tyres. The later model has Pirelli Angel GT sport touring tyres, but any sport touring or street tyres would be suitable.
|Wheel||Tyre size||Tyre pressure (cold)|
|Front||120/70R17 M/C (58H)||41 psi / 280 kPa|
|Rear||160/60R17 M/C (69H)||41 psi / 280 kPa|
Manual for the CFMOTO 650NK
The above came from the CFMOTO manual and from parts diagrams.
You can download the manual by sending an enquiry to CFMOTO.