KYMCO Mongoose 70S Service Specs: Part Numbers and Intervals
Michal B., KYMCO parts specialistThis is the service sheet for the KYMCO Mongoose 70S (4-stroke single, air cooled, 69.4 cc, carburetted, automatic). 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, 2018-2022) and the diagram the part is drawn on. The figures are KYMCO service data from the KYMCO Mongoose 70 / 90 service manual. When this page and your own manual disagree, the manual wins.
What to know before you order
The Mongoose 70S is a small automatic youth ATV with an air-cooled four-stroke, a CR7HSA plug and a YTX5L-BS battery. Its service runs by the calendar: oil every six months, the plug checked every three, the air filter cleaned every three. The tires run at only 3.6 psi, so a gauge that reads low pressures accurately matters more here than on a scooter.
Mongoose 70S service specs at a glance
| Item | Spec | Genuine part number | Diagram |
|---|---|---|---|
|
Battery all models |
12 V 4 Ah |
31500-KNBN-92A |
F09 Battery |
|
Spark plug all models |
gap 0.6-0.7 mm |
98056-5771R-00 |
E02 Head Cover ● Cylinder Head Cylinder |
| Engine oil | 0.7 L at an oil change, 0.8 L dry | ||
|
Oil filter all models |
washable strainer screen behind the 30 mm cap |
15421-1G07-001 |
E04 Right Crankcase Cover |
| Tires | 16 x 8-7 front and rear; 3.6 psi |
44710-ABE3-M00 |
F05 Front Wheel |
Mongoose 70S 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 1 month, then every 6 months |
| Spark plug | check at 1 month, then every 3 months |
| Air filter | clean every 3 months |
| Valve clearance | check at 1 month, then every 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 | 8.9 |
| Engine oil drain plug | 25 | 18 |
| Oil strainer screen cap | 15 | 11 |
| Drive face nut | 60 | 44 |
| Wheel nuts | 45 | 33 |
| Rear axle nuts | 70 | 52 |
Every Mongoose 70S part, drawn on its factory diagram: KYMCO Mongoose 70S 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.