KYMCO MXU 150 Service Specs: Part Numbers and Intervals
Michal B., KYMCO parts specialistThis is the service sheet for the KYMCO MXU 150 (4-stroke single, air cooled, 149 cc, carburetted, automatic with reverse, 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, 2019-2021, 2023, 2025-2026) and the diagram the part is drawn on. The figures are KYMCO service data from the KYMCO MXU 150 service manual (2005-2017). When this page and your own manual disagree, the manual wins.
What to know before you order
The MXU 150 in our catalog (2016 on) takes an NGK DR8EA plug; the older manual lists a CR8E, but DR8EA is the part KYMCO supplies for these years. It has a CVT with a gearbox behind it and a chain to the rear axle, so there are three things to keep up with: 0.9 L of engine oil every 1,000 km, 200 cc of transmission oil every 2,000 km, and the chain. The tires run at 4 psi.
MXU 150 service specs at a glance
| Item | Spec | Genuine part number | Diagram |
|---|---|---|---|
|
Battery all models |
12 V 8 Ah |
31500-KFAF-90A |
F10 Battery |
|
Spark plug all models |
gap 0.6-0.7 mm |
98069-5771R |
E02 Head Cylinder |
| Engine oil | 0.9 L at an oil change, 1.0 L dry | ||
|
Oil filter all models |
strainer screen behind the 30 mm cap |
15421-1G07-001 |
E01 Crank Case |
| Transmission oil | 200 cc at a change, 400 cc dry | ||
|
Drive belt all models |
width 20-21 mm new, replace at 19 mm |
23100-LLB1-90B |
E06 Driven Pulley |
|
Weight rollers all models |
21 mm OD new, replace at 20.42 mm |
22121-KAAA-305 |
E06 Driven Pulley |
| Tires | front 21 x 7-10, rear 22 x 10-10; 4.0 psi |
42710-LCA4-M0A 44710-LCA4-M0A |
F07 Rear Wheel |
MXU 150 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 and strainer | at 150 km (90 mi), then every 1,000 km (600 mi) or 6 months |
| Transmission oil | replace every 2,000 km (1,250 mi) or 12 months |
| Drive belt | check every 2,000 km (1,250 mi) or 12 months |
| Air filters | clean every 20-40 hours of riding |
| Spark plug, valves, drive chain | every 1,000 km (600 mi) or 6 months |
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 | 15 | 11 |
| Engine oil drain plug | 25 | 18 |
| Oil strainer screen cap | 15 | 11 |
| Transmission oil drain bolt | 9.8 | 7.2 |
| Drive face nut | 59 | 43 |
| Clutch outer nut | 54 | 40 |
| Start clutch nut (left-hand thread) | 93 | 69 |
| Wheel axle nuts | 69 | 51 |
Every MXU 150 part, drawn on its factory diagram: KYMCO MXU 150 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.