Kymco YAGER 125 (1998–2006) — Specs
Identity
Manufacturer: Kymco
Model: YAGER 125
Category: Scooter
Type: Scooter
Years: 1998 → 2006
Engine
Displacement (cc): 124
Cylinders: 1
Power (hp): 11
Power (kW): 8
Torque (Nm): 14
Dimensions
Overall length: 1900 mm
Overall width: 730 mm
Overall height: 1170 mm
Wheelbase: 1335 mm
Ground clearance: 125 mm
Weight (kg): 143
Seat height (mm): 790
Tank (L): 10.6
Tires
Front tire: 100/80-14
Rear tire: 120/70-14
Front pressure (bar): 1.8
Rear pressure (bar): 2.2
Ignition
Spark plug: NGK DPR7EA-9
Plug gap: 0.9 mm
Fluids & Filters
Engine oil: SAE10W-40
Engine oil (with filter, L): 0.9
Oil filter: OEM oil filter
Air filter: OEM air filter
Brake fluid: DOT 4
Fuel consumption
Estimated range: ~424 km on a full tank (10.6 L)
Service
Battery: OEM battery specification
Service interval (km): 6000
Service interval (months): 12
Valve check (km): 18000
Parts and consumables for this motorcycle
Data is gathered with care, but without guarantee. Always confirm critical information with your dealer or workshop.
Service notes
Service interval: every 6,000 km or 12 months, whichever comes first. Valve clearance check every 18,000 km. Valve clearance — intake 0.12 mm cold, exhaust 0.12 mm cold. Engine oil: oil grade SAE10W-40, 0.9 L with filter change. Spark plug: NGK DPR7EA-9 (gap 0.9 mm). Brake fluid: DOT 4. Tire pressure: front 1.8 bar, rear 2.2 bar (cold). Tire size: front 100/80-14, rear 120/70-14. Always confirm critical values with the workshop manual or an authorised dealer.
OEM and quality aftermarket parts that fit this bike. Always confirm with your dealer before ordering.
Engine oil
Spec: SAE10W-40, 0.9 L (with filter)
- OEM OEM recommended engine oil (SAE 10W-40)
- Premium Motul 7100 4T (100% Synthetic, Ester)
- Premium Motul 5100 4T Technosynthese (Semi-Synthetic)
Which Motul for this bike?
| Motul 7100 4T ✓ | Motul 5100 4T | |
|---|---|---|
| Product | Motul 7100 4T — 100% fully synthetic | Motul 5100 4T — semi-synthetic |
| Best for | Sport, Naked, Adventure (600cc+), track | Standard, Cruiser, Scooter, daily use |
| RPM protection | Excellent — ester base, stable under load | Good — for normal riding conditions |
- Standard Repsol Moto Racing 4T (Synthetic)
- Standard Elf Moto 4 Tech (Semi-Synthetic)
Fully Synthetic vs Semi-Synthetic
| Fully Synthetic | Semi-Synthetic | |
|---|---|---|
| Base oil | 100% chemical synthesis (ester or PAO) | Mineral oil + synthetic additives |
| Heat resistance | Excellent — stable at extreme heat & RPM | Good — suitable for normal temperatures |
| Cold start | Better — reaches engine faster when cold | Good — adequate for normal climates |
| Change interval | Longer (up to 10,000 km) | Shorter (5,000–7,000 km typical) |
| Price | Higher | Lower |
Oil filter
Air filter
Spark plug
Spec: NGK DPR7EA-9, gap 0.9 mm
- OEM NGK DPR7EA-9
- Premium NGK DPR7EIX-9
- Standard NGK DPR7EA-9
Front brake pads
Spec: EBC SFA197HH
- Premium EBC SFA197HH
Rear brake pads
Spec: EBC SFA197HH
- Premium EBC SFA197HH
Front tire
Spec: 100/80-14, 1.8 bar
- OEM OEM 100/80-14
Rear tire
Spec: 120/70-14, 2.2 bar
- OEM OEM 120/70-14
Battery
- Premium Yuasa YTX5L-BS or YT4B-BS (typical 50-125cc)
Brake fluid
Spec: DOT 4
- Standard TotalEnergies HBF4
Coolant
Service interval
Spec: 6 000 km / 12 months
- OEM Engine oil + oil filter change
- OEM Air filter inspection
- OEM Spark plug check
- OEM Brake fluid replacement: every 2 years
Valve check
Spec: 18 000 km
- OEM Intake clearance: 0.12 mm cold
- OEM Exhaust clearance: 0.12 mm cold
Suspension
Spec: 33 mm telescopic fork / 67 ml SAE 20W
- OEM Fork: 33 mm telescopic fork
- OEM Fork oil grade: 67 ml SAE 20W
