KYMCO Mongoose 270 Service Specs: Part Numbers and Intervals
Michal B., KYMCO parts specialistThis is the service sheet for the KYMCO Mongoose 270 (4-stroke single, liquid cooled, 270 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, 2018-2021) and the diagram the part is drawn on. The figures are KYMCO service data from the KYMCO ATV 300/250 service manual (Mongoose 300 / MAXXER 300, model LA60). Covers the carburetted Mongoose 270 (model LA60). The fuel-injected Mongoose 270i (LF60S) is a different engine and is not covered. When this page and your own manual disagree, the manual wins.
What to know before you order
The Mongoose 270 on this sheet is the carburetted model LA60, 2016 to 2021 in our catalog; the fuel-injected Mongoose 270i is a different engine. It runs a DPR7EA-9 plug, which NGK gaps at 0.8 to 0.9 mm, a YTX12-BS battery, and a chain final drive with a separate 300 cc transmission oil change. Liquid cooling adds a coolant change every 24 months.
Mongoose 270 service specs at a glance
| Item | Spec | Genuine part number | Diagram |
|---|---|---|---|
|
Battery all models |
12 V; charge at 1.2 A for 5-10 h |
31500-KHE7-90A |
F11 Battery |
|
Spark plug all models |
gap 0.8-0.9 mm |
98069-5791R-00 |
E02 Head Cover ● Cylinder Head Cylinder |
| Engine oil | KYMCO SAE 15W-40; 1.4 L at an oil change, 1.6 L dry | ||
|
Oil filter all models |
strainer screen behind the 30 mm cap |
15421-1G07-001 |
E04 Right Crankcase Cover ● Water Pump |
| Transmission oil | SAE 90; 300 cc at a change | ||
| Coolant | 1,400 cc total; replace every 24 months | ||
|
Drive belt all models |
width 23.6-24.4 mm new, replace at 22 mm |
23100-KHE7-90B |
E05 Drive Pulley |
|
Weight rollers all models |
23 mm OD new, replace at 22.8 mm |
22121-LBA7-305 |
E05 Drive Pulley |
|
Brake pads all models |
discs 3.8-4.2 mm new, 3.0 mm minimum |
45105-KKC4-305 45105-LBA7-305 |
F08 Rear Wheel |
| Tires | front 21 x 7-10, rear 20 x 11-9; 3.2 psi |
42710-LBA7-90A 44710-LEC1-M00 44710-LBA7-90A |
F08 Rear Wheel |
Mongoose 270 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 | every 1,000 km (600 mi) or 6 months |
| Coolant | replace every 24 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 | 18 | 13 |
| Engine oil drain plug | 25 | 18 |
| Oil strainer screen cap | 15 | 11 |
| Transmission fill and drain bolts | 20 | 14 |
| Drive face nut | 93 | 69 |
| Clutch outer nut | 54 | 40 |
| Wheel nuts | 44 | 33 |
| Rear wheel hub nut | 98 | 72 |
| Brake caliper mounting bolts | 31 | 23 |
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 3.4-4.1 Ω; secondary about 14.45 kΩ without the plug cap |
3051A-KHE7-900 |
| Pulser coil | 105-110 Ω | |
| Regulator rectifier | 13.5-15.5 V; generator 150 W |
31600-LBA7-900 |
Every Mongoose 270 part, drawn on its factory diagram: KYMCO Mongoose 270 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.