Service specs
KYMCO MXU 500i Service Specs: Part Numbers and Intervals
Battery, spark plug, oil, filters, belt and torque for the KYMCO MXU 500i: KYMCO service data with the genuine part number and diagram for each.
This is the service sheet for the KYMCO MXU 500i (4-stroke single, liquid cooled, 498.5 cc, fuel injected). 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 (2014-2017) and the diagram the part is drawn on. The figures are KYMCO service data from the KYMCO MXU 500i / 700i service manual (2013-2018). When this page and your own manual disagree, the manual wins.
- Engine4-stroke singleliquid cooled, 498.5 cc, fuel injected
- Engine oilAPI SJ, SAE 5W-503.0 L at an oil change, 3.6 L dry
- Spark plugCR7Egap 0.6-0.7 mm
- BatteryYTX20L-BS12 V 18 Ah
What to know before you order
The MXU 500i takes 3.0 L of SAE 5W-50 at an oil change, more than the 700, through a cartridge filter and strainer. Its CVT is large: a 34.1 mm belt that comes out at 30.8 mm, and 30 mm rollers. The front and rear gear boxes take SAE 80, 250 cc and 230 cc.
MXU 500i service specs at a glance
| Item | Spec | Genuine part number | Diagram |
|---|---|---|---|
| Batteryall models | 12 V 18 Ah; charge at 1.8 A for 5-10 h |  31500-LDB5-E0A |
 F11 Battery |
| Spark plugall models | gap 0.6-0.7 mm |  98059-57916-00 |
 E02 Cylinder Head Cover · Cylinder Head |
| Engine oil | API SJ, SAE 5W-50; 3.0 L at an oil change, 3.6 L dry | ||
| Oil filterall models | cartridge plus strainer |
 1541A-LBA2-E00 15421-1G07-001 |
 E01 Crank Case |
| Front and rear gear boxes | SAE 80; 250 cc front, 230 cc rear at a change | ||
| Coolant | 1.95 L plus 0.3 L reserve; radiator cap 90 kPa (12.8 psi) | ||
| Drive beltall models | width 34.1 mm new, replace at 30.8 mm |  23100-LDB5-E00 |
 E05 Drive Pulley |
| Weight rollersall models | 30 mm OD new, replace at 29.5 mm |  22121-LFE9-305 |
E05 Drive Pulley |
| Brake padsall models | discs 4.0 mm front, 5.0 mm rear new; 3 and 4 mm minimum |
 43105-LFE9-305 43105-LFE9-306 45105-ALC1-305 |
 F08 Rear Wheel |
| Tires | front AT25 x 8-12, rear AT25 x 10-12; 5.0 psi front, 4.5 psi rear |
 42710-LFE9-90B 44710-LFE9-90B 42710-AAA6-900 44710-AAA6-900 |
F08 Rear Wheel |
The diagrams behind this sheet
Each row of the table points at the factory drawing its part sits on. Open one to see the callout number, the quantity and the gaskets and bolts around it.
E01 Crank CaseOpen the diagram →
E02 Cylinder Head Cover · Cylinder HeadOpen the diagram →
E05 Drive PulleyOpen the diagram →
E06 Starting Motor · GeneratorOpen the diagram →
F08 Rear WheelOpen the diagram →
F11 BatteryOpen the diagram →
F21 Harness WireOpen the diagram →
MXU 500i 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, strainer, filter | at 150 km (90 mi), then every 1,000 km (600 mi) or 6 months |
| Front and rear gear 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 1,000 km (600 mi) or 6 months |
| Spark plug | 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 | 12 | 8.7 |
| Engine oil drain plug | 25 | 18 |
| Oil filter cartridge (oiled) | 9.8 | 7.2 |
| Front gear oil drain bolt | 31 | 23 |
| Rear gear oil drain bolt | 20 | 14 |
| Driven pulley nut (oiled) | 98 | 72 |
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 0.55-0.75 Ω |  3051A-LKA8-E00 |
| Stator | charging coil 0.1-0.3 Ω |
 31100-LKA8-E0A 31120-LKA8-E0A |
| Fuel injection | injector 10.6-15.9 Ω; fuel pump 300 ± 10 kPa (43.5 psi) |
 3920A-ALC1-E00 3920A-ALC1-M35 |
Every MXU 500i part, drawn on its factory diagram: KYMCO MXU 500i 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.