Target Audience:
DIY mechanics, ATV enthusiasts, and professional service technicians seeking detailed repair and maintenance information for Yamaha 350cc and 400cc ATVs.
Value Proposition:
Provides comprehensive, factory-level repair data for a range of popular Yamaha models, enabling owners to perform complex repairs and routine maintenance, saving on labor costs.
Key Manual Features:
Instant download, printable pages, high-quality diagrams, extensive troubleshooting sections, model-specific data.
Applicable Models:
2003-2009 Yamaha YFM350X Bruin 2WD, 2003-2009 Yamaha YFM350X Wolverine 2WD, 2003-2009 Yamaha YFM400FA Kodiak 4x4
Estimated Page Count:
Varies by specific model, typically 300-500+ pages for comprehensive service manuals.
Manual Type:
Service Repair Manual (Workshop Manual)
File Format:
PDF (Downloadable)
Engine Systems:
Engine disassembly, assembly, inspection, troubleshooting, top-end, bottom-end, cooling system, lubrication system, oil seals, gaskets.
Drivetrain Systems:
Transmission, clutch, drive shafts, differentials, final drive, gearbox maintenance and repair.
Chassis Systems:
Frame inspection, suspension (front and rear), steering system, brakes (hydraulic systems, calipers, master cylinders, lines), wheels, tires.
Electrical Systems:
Wiring diagrams, battery, charging system (stator, rectifier/regulator), ignition system, lighting, starter motor, switches, fuses, relays, diagnostic connectors.
Fuel And Carburetion Systems:
Carburetor specifications, adjustment, cleaning, rebuilding, fuel lines, fuel pump, fuel tank.
Maintenance Procedures:
Oil changes, filter replacements, spark plug service, air filter cleaning/replacement, coolant flush, brake fluid replacement, lubrication points.
Repair Procedures:
Complete engine rebuilds, transmission overhauls, brake system repairs, suspension component replacement, electrical component troubleshooting and replacement.
Troubleshooting Guides:
Diagnostic procedures for common starting issues, running problems, electrical faults, and operational anomalies.
Diagnostic Capabilities:
Detailed diagnostic information, common fault codes (if applicable to the era/system), and troubleshooting trees.
Rebuild Guidance:
Step-by-step instructions for complete engine and transmission rebuilds, including torque specifications and critical measurements.
Print Quality:
High-resolution, suitable for printing individual pages or the entire manual.
Binding Type:
N/A (Digital Download)
Paper Type:
N/A (Digital Download - printable on demand)
Operating System Compatibility:
All versions of Windows & Mac
Software Requirements:
Adobe PDF Reader (or compatible PDF viewer)
Engine Type Yfm350:
348cc, Air-cooled, SOHC, 4-stroke, 2-valve, Single Cylinder
Engine Type Yfm400:
387cc, Air-cooled, SOHC, 4-stroke, 2-valve, Single Cylinder
Bore X Stroke Yfm350:
83.0 mm x 64.5 mm
Bore X Stroke Yfm400:
90.0 mm x 75.0 mm
Compression Ratio Yfm350:
9.2:1
Compression Ratio Yfm400:
8.7:1
Carburetor Yfm350:
Mikuni BSR33/1, Single Carburetor
Carburetor Yfm400:
Mikuni BSR33/1, Single Carburetor
Ignition System:
CDI (Capacitor Discharge Ignition)
Cooling Method:
Air Cooled
Transmission Type Yfm350:
5-speed semi-automatic (Ultramatic with forward, neutral, reverse)
Transmission Type Yfm400:
Automatic Transmission (Ultramatic) with forward, neutral, reverse
Drive System:
Shaft Drive (2WD for Bruin/Wolverine, 4WD for Kodiak)
Gear Oil Type:
Yamaha SAE 10W-30 API SE, SF or SG (Consult specific manual for precise viscosity and API rating)
Dashboard Features:
Basic digital/analog meter cluster displaying speed, odometer, trip meter, neutral indicator, reverse indicator, and possibly a fuel gauge (depending on model/trim).
Rider Aid Systems:
Leverages reliable mechanical systems and proven engine/transmission designs rather than electronic driver aids common in modern vehicles.
Engine Oil Change Interval:
Every 6 months or 1,000 miles / 1,600 km, or 200 operating hours (Refer to specific manual for precise interval).
Spark Plug Replacement Interval:
Every 12 months or 2,000 miles / 3,200 km (Consult manual for specific plug type and gap).
Air Filter Maintenance:
Clean every 6 months or 1,000 miles / 1,600 km; replace as needed.
Engine Oil Capacity Yfm350:
Approx. 1.8 L (1.9 US qt) with filter change (Consult manual for exact capacity).
Engine Oil Capacity Yfm400:
Approx. 1.9 L (2.0 US qt) with filter change (Consult manual for exact capacity).
Engine Oil Recommendation:
Yamalube 4 (or equivalent) SAE 10W-30 API SE, SF or SG (Check manual for specific grade and API classification).
Brake Fluid Type:
DOT 3 or DOT 4 Hydraulic Brake Fluid (Consult manual for exact specification).
Common Wear Items:
Brake pads, wheel bearings, tie rod ends, steering components, drive shaft U-joints (especially on 4x4 models), and carburetor tuning can be common maintenance points.
Carburetor Issues:
Can be prone to clogging if fuel is left to sit for extended periods, requiring cleaning and proper fuel stabilizer usage.
Yamaha Atv Legacy:
Yamaha has a long-standing reputation for producing durable and capable ATVs, with the Big Bear, Wolverine, and Bruin lines being key contributors to their off-road dominance.
Bruin Wolverine Kodiak Lineage:
The YFM350 platform (Bruin/Wolverine) and the YFM400 platform (Kodiak) represent Yamaha's mid-size utility ATV offerings, evolving from earlier models with a focus on reliability, ease of use, and off-road performance.
Manufacturing Location:
Primarily manufactured in Japan and/or USA.
