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Kawasaki Z900 (2017-2022) — Maintenance Specs

The Z900 turned the retired Z1000's down-tuned inline-four into a friendly 948 cc naked bike in 2017, and the 2020 update documented here added LED lighting and ride modes. The engine is conventional to service: 3.6 L of 10W-40 with the filter, four NGK CR9EIA-9 iridium plugs, 2.4 L of coolant and a 17 L tank. The 2017-2020 ZR900A-F bikes are covered by this manual; 2021-2022 models got new bodywork, a TFT dash and up/down quickshifter on the same mechanicals. With 25-35 mm chain slack and 36/42 psi tire pressures it shares consumables with the Z900RS retro.

Quick specs

Oil capacity (with filter) 3.6 L3.8 US qt, when filter is removed 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Oil capacity (without filter) 3.2 L3.4 US qt, when filter is not removed 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Oil type API SG, SH, SJ, SL or SM with JASO MA, MA1 or MA2 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Oil viscosity SAE 10W-40 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Front tire pressure (solo) 36 psi250 kPa, cold 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Rear tire pressure (solo) 42 psi290 kPa, cold 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Spark plug NGK CR9EIA-9 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Spark plug gap 0.8-0.9 mm0.031-0.035 in 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)

Maintenance schedule

Specification Value Source
Engine oil & filter first 1,000 km (600 mi), then every 12,000 km (7,600 mi) or 1 year 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)

Fluids & capacities

Specification Value Source
Oil capacity (with filter) 3.6 L3.8 US qt, when filter is removed 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Oil capacity (without filter) 3.2 L3.4 US qt, when filter is not removed 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Oil type API SG, SH, SJ, SL or SM with JASO MA, MA1 or MA2 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Oil viscosity SAE 10W-40 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Coolant capacity 2.4 L2.5 US qt 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Brake fluid type (DOT) DOT 4 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Fuel capacity 17 L4.5 US gal 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)

Torque specs

Specification Value Source
Oil drain plug 29 Nu00b7mengine oil drain bolt (3.0 kgfu00b7m, 21 ftu00b7lb) 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Rear axle nut 110 Nu00b7maxle nut (11.2 kgfu00b7m, 81.1 ftu00b7lb) 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)

Electrical

Specification Value Source
Battery 12V 8Ah (10HR) 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Headlight bulb LED (high/low) 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Spark plug NGK CR9EIA-9 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Spark plug gap 0.8-0.9 mm0.031-0.035 in 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)

Tires & wheels

Specification Value Source
Front tire size 120/70ZR17M/C (58W) 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Rear tire size 180/55ZR17M/C (73W) 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Front tire pressure (solo) 36 psi250 kPa, cold 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)
Rear tire pressure (solo) 42 psi290 kPa, cold 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122)

Official manual

Owner's manual on Kawasaki official site

Opens the manufacturer’s official website in a new tab.

Frequently asked questions

How much oil does a Kawasaki Z900 take?
3.2 L drain-only, 3.6 L with the filter replaced, 4.0 L total capacity.
Z900 tire pressure?
36 psi front, 42 psi rear when cold.
What spark plugs does a Z900 use?
Four NGK CR9EIA-9 iridium plugs gapped 0.8-0.9 mm.
Z900 oil change interval?
Every 12,000 km (7,600 mi) or once a year after the initial 1,000 km service.

Sources

Value Source Checked
Oil capacity (with filter): 3.6 L 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Engine Oil section, p. 143) 2026-11-03
Oil capacity (without filter): 3.2 L 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Engine Oil section, p. 143) 2026-11-03
Oil type: API SG, SH, SJ, SL or SM with JASO MA, MA1 or MA2 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 28) 2026-11-03
Oil viscosity: SAE 10W-40 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 28; Engine Oil section, p. 141) 2026-11-03
Coolant capacity: 2.4 L 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 28) 2026-11-03
Brake fluid type (DOT): DOT 4 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 30) 2026-11-03
Fuel capacity: 17 L 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 30) 2026-11-03
Engine oil & filter: first 1,000 km (600 mi), then every 12,000 km (7,600 mi) or 1 year 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Periodic Maintenance Chart) 2026-11-03
Oil drain plug: 29 Nu00b7m 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Engine Oil section, p. 141) 2026-11-03
Rear axle nut: 110 Nu00b7m 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Wheel section, p. 155) 2026-11-03
Battery: 12V 8Ah (10HR) 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 30) 2026-11-03
Headlight bulb: LED (high/low) 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 30) 2026-11-03
Spark plug: NGK CR9EIA-9 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 28) 2026-11-03
Spark plug gap: 0.8-0.9 mm 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 28) 2026-11-03
Front tire size: 120/70ZR17M/C (58W) 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 30) 2026-11-03
Rear tire size: 180/55ZR17M/C (73W) 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Specifications, p. 30) 2026-11-03
Front tire pressure (solo): 36 psi 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Tires section, p. 168) 2026-11-03
Rear tire pressure (solo): 42 psi 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Tires section, p. 168) 2026-11-03
Chain Slack: 25-35 mm 2020 Kawasaki Z900 (ZR900F) Owner's Manual (Kawasaki Owners Center / KTIVS e-book, US, item 99803-0122) (p. Drive Chain section, p. 153) 2026-11-03
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