Target audience:
DIY owners, ATV enthusiasts, and small-engine service technicians
Intended use:
Routine maintenance, troubleshooting, and complete repair of the MXU250
Skill level:
Suitable for home mechanics through professional workshops
Content source:
Original Equipment Manufacturer (OEM) service documentation
Completeness:
Covers service, repair, and overhaul procedures from start to finish
Convenience:
Digital PDF with instant download and searchable text
Coverage areas:
Full service, repair, and rebuild procedures for all major systems
Manual type:
OEM Workshop Service Repair Manual
Delivery:
Instant digital download
Binding:
Digital (PDF document)
Compatibility:
Windows, Mac, tablets, and smartphones with a PDF reader
Searchability:
Fully searchable text; printable pages
Engine:
Complete engine service, disassembly, and rebuild procedures
Fuel system:
Carburetor service, fuel tank, fuel valve, and throttle operation
Lubrication:
Oil system specifications, change procedures, and oil pump service
Cooling:
Air / oil cooling system inspection and service as equipped
Electrical system:
Wiring diagrams, CDI ignition, charging system, starter system
Brakes:
Front and rear brake inspection, adjustment, and replacement
Suspension:
Front A-arm and rear swingarm / single shock service and settings
Wheels and steering:
Steering stem, handlebar, wheel, and tire procedures
Drive train:
CVT drive belt, clutch, transmission, and final drive service
Frame and body:
Frame, fenders, racks, and body panel removal and installation
Maintenance:
Scheduled maintenance charts and step-by-step service procedures
Diagnostics:
Troubleshooting tables for engine, electrical, and drive issues
Repair:
Component removal, inspection, and installation instructions
Rebuild:
Full engine and component overhaul procedures
Torque specifications:
Fastener torque values throughout the manual
Special tools:
Special tool listings and usage where required
Wiring diagrams:
Complete electrical wiring diagrams included
Detail level:
OEM-level detail with exploded diagrams and specifications
Photos and illustrations:
High-quality diagrams and photos for every major procedure
Measurements:
Wear limits, clearances, and inspection specifications included
Parts data:
Exploded views with part references for ordering and identification
Fluid specifications:
Recommended oils, greases, and coolant types and capacities
Fastener data:
Thread sizes, torque values, and locking requirements
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Primary engine:
223cc single-cylinder, 4-stroke, air-cooled engine (KYMCO 250-class)
Valvetrain:
Single overhead camshaft (SOHC), 4-valve head
Starting system:
Electric start with kick-start backup
Power output:
N/A - see manual for exact OEM figures
Torque:
N/A - see manual for exact OEM figures
Fuel delivery:
Keihin CVK carburetor
Fuel type:
Regular unleaded gasoline
Fuel tank capacity:
Approximately 3.5 gallons (13 L)
Wheelbase:
Approximately 47.6 in (1,210 mm)
Overall length:
Approximately 74.8 in (1,900 mm)
Overall width:
Approximately 40.9 in (1,040 mm)
Seat height:
Approximately 33.5 in (850 mm)
Ground clearance:
Approximately 8.3 in (210 mm)
Curb weight:
Approximately 470 lb (213 kg)
Fuel capacity:
Approximately 3.5 gallons (13 L)
Active and Passive Features
Crash test ratings:
N/A - ATVs are not assigned consumer crash test ratings
Brakes:
Dual front disc brakes, rear disc (or sealed drum) brake
Lighting:
Halogen headlight, taillight, and brake light
Kill switch:
Handlebar-mounted engine stop (kill) switch
Speed limiter:
Adjustable throttle limiter for novice riders
Certification:
ANSI/SVIA 1 ATV standard compliance where applicable
Initial service:
First service at 20 hours / 100 miles (break-in)
Periodic service:
Scheduled maintenance chart included in the manual
Engine oil:
Change every 100 operating hours or 6 months, whichever comes first
Air filter:
Inspect before each ride; clean and oil per schedule
Spark plug:
Inspect / replace per maintenance schedule
Drive belt:
Inspect CVT drive belt regularly; replace when worn
Engine oil:
SAE 10W-40 API SG or higher, JASO MA rated
Oil capacity:
Per manual specification on change and overhaul
Gear / final drive oil:
Per manual specification
Grease points:
Chassis and suspension grease fittings and pivot points
Common wear:
CVT drive belt, brake pads, spark plug, air filter, tires, chain-free shaft drive bushings
Known issues:
Carburetor gumming from stale fuel; electrical connector corrosion if ridden wet
Manufacturer:
Kwang Yang Motor Co., Ltd. (KYMCO), founded 1963 in Kaohsiung, Taiwan
Manufacturer background:
One of the world's largest scooter and ATV manufacturers; long-time engine supplier to major brands including Honda and BMW partnerships
Model family:
MXU series of utility ATVs introduced in the mid-2000s
Position in range:
MXU250 served as the entry-level youth / small utility model
Production location:
Taiwan