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2007 Yamaha YZ125 Workshop Repair Manual All ONWARDS ModelS COVERED

$16.99
$16.99
🏷️ Basic Information Identification Make: Yamaha Model: YZ125 Model Variant: YZ125 (2-stroke motocross) Years Covered: 2007 and all onwards models Vehicle Type: 2-stroke motocross motorcycle 👋 Introduction Market Position Target...
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Type: Motorcycle
Vendor:
Yamaha
Sku: 270307
Tags: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 AT Models Motorcycle Motorcycles Yamaha YZ125
2007 Yamaha YZ125 Workshop Repair Manual All ONWARDS ModelS COVERED
🏷️ Basic Information
Identification
Make:
Yamaha
Model:
YZ125
Model Variant:
YZ125 (2-stroke motocross)
Years Covered:
2007 and all onwards models
Vehicle Type:
2-stroke motocross motorcycle
👋 Introduction
Market Position
Target Audience:
Motocross racers, off-road riders, and owners servicing their own bikes
Class:
125cc two-stroke motocross competition motorcycle
Key Advantages
Competitive Advantage:
Lightweight chassis, lively 125cc two-stroke powerband, proven Yamaha YPVS power valve system
Key Features:
Liquid-cooled engine, Keihin carburetor, adjustable Kayaba suspension, close-ratio 6-speed gearbox
📋 Manual Details
Manual Information
Coverage Areas:
Complete service, repair, and rebuild procedures for 2007+ YZ125
Manual Type:
Workshop Service Repair Manual
Language:
English
Format:
PDF
Delivery Method:
Instant digital download
Page Count:
N/A - not specified for this model
Binding:
Digital PDF
📖 Manual Coverage
Systems Covered
Engine:
Complete teardown, inspection, and rebuild of the 124cc two-stroke engine
Fuel System:
Carburetor removal, disassembly, jetting, and tuning
Cooling System:
Radiator, hoses, pump, and coolant service
Ignition System:
CDI unit, ignition coil, spark plug, and stator testing
Transmission:
6-speed gearbox disassembly, shift mechanism, and clutch service
Exhaust and Power Valve:
YPVS power valve service and exhaust system removal
Lubrication:
Premix oil system specifications and fuel/oil ratio guidance
Front Suspension:
Fork disassembly, seal replacement, and adjustment
Rear Suspension:
Shock service, linkage bearings, and swingarm service
Wheels and Brakes:
Wheel truing, spoke service, disc and pad replacement
Steering:
Steering head bearings and handlebar alignment
Electrical:
Wiring diagrams, connectors, and component testing
Frame and Body:
Frame inspection, plastics, and seat removal
Procedures Included
Scheduled Maintenance:
Full service interval charts and step-by-step procedures
Diagnostics:
Troubleshooting charts for engine, chassis, and electrical faults
Torque Specifications:
Complete torque values for fasteners throughout the machine
Special Tools:
Required and recommended special tools listed per procedure
Technical Detail
Technical Depth:
Workshop-level detail suitable for professional technicians and experienced DIY owners
Illustrations:
Diagrams, exploded views, and photographs supporting each procedure
📊 Manual Specifications
File & Compatibility
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 & Binding
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
⚙️ Engine Specifications
Engine
Primary Engine:
124cc liquid-cooled 2-stroke single cylinder
Bore and Stroke:
54.0 mm x 54.5 mm
Compression Ratio:
N/A - varies with head modification, see manual
Induction:
Case reed valve
Power Valve:
Yamaha YPVS exhaust power valve system
Cooling:
Liquid cooled
Fuel System
Carburetor:
Keihin flat-slide carburetor
Fuel:
Premium unleaded with premix 2-stroke oil
Performance
Gearbox:
6-speed constant mesh close-ratio
🔧 Transmission
Transmission
Standard Transmission:
6-speed constant mesh close-ratio gearbox
Final Drive:
Chain drive
Clutch:
Wet multi-plate manual clutch
Features:
Close-ratio motocross gearing for competition use
📐 Dimensions
Dimensions and Weights
Wheelbase:
Approximately 1,438 mm (56.6 in)
Seat Height:
Approximately 993 mm (39.1 in)
Ground Clearance:
Approximately 347 mm (13.7 in)
Fuel Capacity:
Approximately 6.5 L (1.7 gal)
Curb Weight:
Approximately 87-91 kg (192-200 lb) without fuel, verify in manual
🛡️ Safety Features
Safety Information
Crash Test Rating:
N/A - off-road competition motorcycle, not rated for street use
Brakes:
Hydraulic single disc front and rear
Passive Features:
Designed for use with DOT-approved helmet, goggles, and motocross protective gear
💡 Technology Features
Features
Audio / Infotainment:
N/A - competition off-road motorcycle, no infotainment
Driver Assistance:
N/A - none fitted
Instrumentation:
Minimal competition instrumentation
Ignition Technology:
Digital CDI ignition
🔧 Maintenance
Service and Maintenance
Engine Oil:
2-stroke premix oil mixed with fuel per manual specification
Transmission Oil:
SAE 10W-30 or equivalent motor oil, change per interval
Coolant:
High-quality ethylene glycol antifreeze with corrosion inhibitors
Piston and Rings:
Inspect/replace at frequent intervals for competition use
Fork Oil:
Change per scheduled interval; fork seals inspect regularly
Chain:
Regular cleaning, lubrication, and slack adjustment
Air Filter:
Clean and oil after every ride in dusty conditions
Common Wear Items:
Piston, rings, reeds, clutch plates, brake pads, sprockets, chain, fork seals
📚 Vehicle History
Heritage and Production
Manufacturer:
Yamaha Motor Company, Japan
Model Evolution:
YZ125 introduced in 1974; by 2007 featured aluminum frame, YPVS power valve, and refined Kayaba suspension
Production Location:
Yamaha production facilities; consult manual for market-specific details
🏆 Awards & Recognition
Recognition
Racing Heritage:
Long-established platform in amateur and professional motocross competition
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