KYMCO Agility 125 Service Specs: Part Numbers and Intervals

September 23, 2026 Michal B., KYMCO parts specialist

This is the service sheet for the KYMCO Agility 125 (4-stroke single, air cooled, 125 cc, carburetted). It lists the battery, spark plug, filters, belt and the rest, each figure with the genuine KYMCO part number for the model years in our catalog (2020-2022) and the diagram the part is drawn on. The figures are KYMCO service data from the KYMCO Agility 125 service manual (2005-2017 generation). The manual covers the 2005-2017 generation; the part numbers are the 2020-2022 models in our catalog. When this page and your own manual disagree, the manual wins.

What to know before you order

The Agility 125 in our catalog is the 2020 to 2022 model, while the manual behind these figures covers the 2005 to 2017 generation, so read the figures as the reference and the part numbers on this page as what fits your year. It runs a washable oil screen, 0.8 L of SAE 15W-40 and a CR7HSA plug. Its battery is the YT7A-4, the same one the K-Pipe and the Super 8 use; their manuals print different capacities for it, so we list the part rather than a number.

Agility 125 service specs at a glance

Item	Spec	Genuine part number	Diagram
Battery all models	12 V; charge at 0.4 A for 5-10 h	31500-ALC8-EZ0 YT7A-4	F11 Battery
Spark plug all models	gap 0.6-0.7 mm	98056-5771R-00 CR7HSA	E02 Head Cylinder
Engine oil	SAE 15W-40; 0.8 L at an oil change, 0.9 L dry	figure only
Oil filter all models	washable strainer screen behind the 30 mm cap	15421-1G07-C00 Oil Filter Screen	E04 Right Crankcase Cover
Final drive oil	SAE 90; 0.18 L at a change	figure only
Air filter all models	replace every 2,000 km (1,250 mi)	17211-LDF7-E00 Air Cleaner Element Complete	F13 Air Cleaner
Drive belt all models	width 17.5 mm new, replace at 16.5 mm	23100-KEC4-C0E Drive Belt	E06 Driven Pulley
Weight rollers all models	16.0 mm OD new, replace at 15.4 mm	22121-KKD7-315 Weight Roller Set (1Set:6Pcs)14G*6	E06 Driven Pulley
Brake pads and shoes all models	lining 4.0 mm new, replace at 2.0 mm	4312A-KUDU-C00 Rear Brake Shoe Assembly (2020-2022) 45105-KKD6-305 A+B Pad Complete (2020-2022)	F08 Rear Wheel
Tires	front 120/70-12 56J, rear 130/70-12 56J; 21 / 28.4 psi solo, 24.9 / 32 psi two-up	42710-LDC8-E10 Rear Tire Assembly (2020-2022) 44710-LDC8-E10 Front Tire Assembly (2020-2022)	F08 Rear Wheel

For reference: confirm the number on your own model year's diagram before ordering. Part numbers checked against our catalog on 2026-09-23.

Agility 125 maintenance intervals

Whichever comes first, distance or time. The first service is the one riders skip and the one that matters most on a new or rebuilt engine.

Item	Interval
Engine oil	replace at 300 km (190 mi), then every 2,000 km (1,250 mi)
Oil strainer screen	clean at 4,000 and 8,000 km (2,500 and 4,950 mi)
Final drive oil	replace at 300 km (190 mi), then at 5,000 and 10,000 km (3,100 and 6,200 mi)
Air filter	replace every 2,000 km (1,250 mi)
Spark plug	clean every 3,000 km (1,850 mi), replace when worn
Valve clearance	adjust at 2,000, 4,000, 8,000 and 12,000 km (1,250, 2,500, 4,950 and 7,450 mi)
Drive belt	inspect at 8,000 km (4,950 mi)
Brakes	inspect every 1,000 km (600 mi)

Torque for the parts you replace

Clean, dry threads unless the row says otherwise. Aluminium cases strip long before a steel bolt complains, so use a torque wrench on the drain bolt and the plug.

Fastener	N·m	ft-lb
Spark plug	9.8-14	7.2-10
Oil strainer screen cap	9.8-20	7.2-14
Final drive drain bolt	18-22	13-16
Drive face nut	54-64	40-47
Clutch outer nut	34-44	25-33
Front axle nut	49-69	36-51
Rear axle nut	108-127	80-94

Electrical test values

Measured at about 20 °C with the connector unplugged. A reading far outside the range points at the part; a reading inside it sends you back to the wiring and the connectors.

Part	Test value	Genuine part number
Ignition coil	primary 0.1-1.0 Ω; secondary 7-12 kΩ with the plug cap, 3-5 kΩ without	3051A-GFY6-C00 Ignition Coil Assembly
Pulser coil	80-160 Ω	not sold separately in our catalog; see the stator row
Stator	lighting coil yellow to green 0.1-1.0 Ω; charging coil white to green 0.2-1.2 Ω	31100-KUDU-C00 Ac Gen Assembly (2020-2022) 31120-KUDU-C00 Stator Complete (2020-2022)
Regulator rectifier	14.5 ± 0.5 V at 5,000 rpm	31600-KUDU-C00 Reg Rec Complete

Every Agility 125 part, drawn on its factory diagram: KYMCO Agility 125 parts diagrams.

Which model year do I have?

The year decides which number is yours where a row lists more than one. Decode your VIN with the VIN lookup, or read the model code on the frame plate, then open that year's diagrams from the model list.

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