Target Audience:
Owners of Yamaha YFM50S Grizzly 50 ATVs seeking to perform maintenance, repairs, and diagnostics.
Product Category:
Powersports Service Documentation
Manual Advantage:
Provides comprehensive factory-level information, essential for accurate and efficient servicing, surpassing generic online guides.
Completeness:
The 'COMPLETE official full factory service repair manual' designation signifies an all-encompassing resource.
Official Source:
Implies adherence to Yamaha's service standards and procedures.
Digital Accessibility:
PDF download format allows for immediate access and convenient use on various devices or printing.
Product Name:
Yamaha YFM50S 2004-2008 Workshop Service Repair Manual PDF Download
Covered Years:
2004, 2005, 2006, 2007, 2008
Coverage Scope:
Complete Official Full Factory Service Repair Manual
Estimated Page Count:
Hundreds of pages (specific count not provided, but indicates comprehensive nature)
Manual Type:
Workshop Service Repair Manual
Engine Management:
Carburetor tuning, ignition system diagnostics, engine overhaul procedures.
Fuel System:
Fuel tank, fuel lines, fuel filter, carburetor maintenance and repair.
Cooling System:
Air-cooled system maintenance (if applicable for the model's design).
Exhaust System:
Muffler, exhaust pipe inspection and replacement.
Transmission Drivetrain:
Automatic transmission (CVT) maintenance, belt replacement, clutch adjustment, gearbox inspection.
Brakes:
Front and rear brake system inspection, pad replacement, fluid bleeding, caliper service.
Suspension:
Front and rear suspension inspection, shock absorber service, A-arm maintenance.
Steering:
Handlebar, steering shaft, tie rod inspection and adjustment.
Electrical System:
Battery maintenance, lighting system (headlights, taillights), ignition switch, starter motor, wiring diagrams.
Frame Chassis:
Frame inspection for damage, mounting points, and component installation.
Body Panels:
Fender, plastic body panels, seat removal and installation.
Routine Maintenance:
Oil changes, filter replacements, spark plug checks, air filter cleaning/replacement, chain adjustment (if applicable).
Troubleshooting:
Diagnostic procedures for common starting issues, running problems, and component failures.
Repair Procedures:
Step-by-step instructions for component removal, disassembly, inspection, repair, and reassembly.
Overhaul Rebuild:
Engine, transmission, and carburetor overhaul procedures.
Electrical Diagnostics:
Wiring diagram interpretation, fault finding for electrical components.
Component Adjustment:
Carburetor idle speed, throttle cable, brake lever adjustments.
Depth Of Information:
Comprehensive, from basic maintenance to full engine and component rebuilds.
Diagnostic Capabilities:
Detailed troubleshooting guides and symptom-based diagnostics.
Specifications Data:
Torque specifications, clearances, fluid capacities, and electrical values.
Engine Type:
Four-stroke, SOHC, air-cooled
Displacement:
49.6 cc (3.03 cu. in.)
Bore X Stroke:
39.0 mm x 41.5 mm (1.54 in x 1.63 in)
Compression Ratio:
10.0:1
Carburetion:
Mikuni VM15-1, single carburetor
Horsepower:
Not officially published, typically in the range of 4-5 HP for this class.
Torque:
Not officially published.
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
2.0 L (0.53 US gal)
Atv Safety:
Designed for youth riders, emphasis on low-speed operation and parental supervision. Refer to local regulations for ATV usage.
Throttle Limiter:
Often equipped with a throttle stop screw for speed limitation, adjustable by parent/guardian.
Parking Brake:
Thumb-actuated parking brake lever on handlebars.
Roll Over Protection:
No specific roll-over protection structure (ROPS) fitted as standard. Helmet and protective gear mandatory.
Lighting:
Halogen headlights, taillight/stoplight.
Engine Oil Change:
Every 100 hours or annually, whichever comes first.
Spark Plug Check:
Every 100 hours or annually.
Air Filter Cleaning:
Every 50 hours or annually; replace if damaged.
Cvt Belt Inspection:
Every 100 hours; inspect for wear, damage, and proper tension. Replace as needed.
Engine Oil Type:
Yamalube 4 (or equivalent API SG, SAE 10W-30) viscosity oil.
Engine Oil Capacity:
0.80 L (0.85 US qt) without oil filter change; 0.90 L (0.95 US qt) with oil filter change (if applicable).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Common Wear Items:
CVT belt wear, carburetor jetting requiring adjustment due to fuel variations or altitude, occasional starter motor issues.
Maintenance Importance:
Regular adherence to the service schedule is crucial for maintaining optimal performance and longevity, especially given its use by younger riders.
Manufacturer:
Yamaha Motor Company is a global leader in powersports, renowned for innovation and quality across motorcycles, ATVs, watercraft, and more.
Youth Atv Segment:
The YFM50S Grizzly 50 is part of Yamaha's long-standing commitment to providing entry-level ATVs for young riders, designed to introduce them to off-road riding safely.
Production Period:
The YFM50S model line was produced from 2004 through at least 2008, with updates and revisions typical for subsequent model years.
