KYMCO K-Pipe 125 Service Specs: Part Numbers and Intervals

September 23, 2026 Michal B., KYMCO parts specialist

This is the service sheet for the KYMCO K-Pipe 125 (4-stroke single, air cooled, 124 cc, carburetted, 4-speed, chain drive). 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 (2016, 2020-2022) and the diagram the part is drawn on. The figures are KYMCO service data from the KYMCO K-Pipe service manual (2016-2017). When this page and your own manual disagree, the manual wins.

What to know before you order

The K-Pipe is a small manual motorcycle, so its service list looks different from the scooters: no drive belt, a 428 drive chain to adjust every 2,000 km, and a wire-gauze oil screen instead of a filter. It takes a CR7HSA plug on every year from 2016 to 2022 and the YT7A-4 battery. Our catalog does not list separate K-Pipe brake pads, so check the front brake diagram for your year before ordering.

K-Pipe 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	F24 Battery
Spark plug all models	gap 0.6-0.7 mm	98056-5771R-00 CR7HSA	E01 Head Cover Cylinder
Engine oil	motorcycle SAE 15W-40; 0.9 L at an oil change, 1.0 L dry	figure only
Oil filter all models	washable wire-gauze screen	15421-LBA8-C10 Oil Filter Screen	E09 Oil Pump
Air filter all models	sponge element; clean every 2,000 km (1,250 mi), replace every 6,000 km (3,750 mi)	17211-LEB5-C10 Air Cleaner Element	F15 Air Cleaner
Drive chain	free play 10-20 mm; adjust every 2,000 km (1,250 mi)	40530-LKL5-E30 Drive Chain 428Hg*106	F20 Rear Fork
Brake pads all models	DOT 4 fluid; front lever play 10-20 mm, rear pedal play 20-30 mm	not listed for this model
Tires	front 25 psi; rear 28.5 psi solo, 32 psi two-up	42710-LKL5-E80 Rear Tire Assembly (2016, 2020-2022) 44710-LKL5-E80 Front Wheel Tire (2016, 2020-2022)	F11 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.

K-Pipe 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 500 km (300 mi), then every 2,000 km (1,250 mi)
Oil filter screen	clean at 500 km (300 mi), then every 4,000 km (2,500 mi)
Air filter	clean every 2,000 km (1,250 mi), replace every 6,000 km (3,750 mi)
Spark plug	clean every 2,000 km (1,250 mi), replace every 4,000 km (2,500 mi)
Valve clearance	adjust at 500 km (300 mi), then every 4,000 km (2,500 mi)
Drive chain	adjust every 2,000 km (1,250 mi)
Fuel filter screen	replace at 8,000 km (4,950 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	11	8
Engine oil drain bolt	24	18
Oil filter screen cap	15-29	11-22
Front axle nut	54-69	40-51
Rear axle nut	59-78	43-58
Rear sprocket bolts	18-20	13-14
Brake caliper mounting bolt	24-29	17-22
Brake disc bolt	18-25	13-18

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
CDI	AC-CDI with an exciter coil; timing 15 ± 2° BTDC at 1,700 rpm	30400-LKL5-E30 Unit Assembly Cdi
Ignition coil	primary 0.2-0.3 Ω; secondary 7.2-8.2 kΩ with the plug cap, 4.2-5.2 kΩ without	30500-LKL5-E30 Ignition Coil Assembly
Pulser coil	80-160 Ω; exciter coil 550-650 Ω	not sold separately in our catalog; see the stator row
Stator	charging coil 0.3-1.5 Ω	3110A-LKL5-E30 Acg. & One Way Complete Assembly (2016, 2020-2022) 31120-LKL5-E30 Stator Complete (2016, 2020-2022)
Regulator rectifier	14-15 V at 5,000 rpm	31600-KAR1-C01 Reg Rec (Dc)

Every K-Pipe 125 part, drawn on its factory diagram: KYMCO K-Pipe 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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