1985-1986 TRX125 / Fourtrax 125 Service Repair Manual (Highly Detailed FSM PDF Preview) Download
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🏷️ Basic Information Identification Make: Honda Model: TRX125 Fourtrax Model Designation: Fourtrax Generation Production Years Covered: 1985-1986 Codes Model Code: TRX125 👋 Introduction Market Position Target Audience: Owners and technicians...
Highly detailed, step-by-step instructions with hundreds of original photographs and illustrations. Suitable for first-time mechanics to experienced technicians.
📊 Manual Specifications
File Format
Format:
PDF
Print Quality
Printability:
Printable without restriction
Binding Type
Binding:
N/A (Digital Download)
Paper Type
Paper Type:
N/A (Digital PDF)
Software Requirements
Reader:
Adobe PDF Reader
⚙️ Engine Specifications
Primary Engine
Engine Type:
Air-cooled, 4-stroke, OHC, single-cylinder
Displacement:
124 cc (approx.)
Bore X Stroke:
Not explicitly stated in provided data, but detailed in manual.
Compression Ratio:
Not explicitly stated in provided data, but detailed in manual.
Performance
Horsepower:
Not explicitly stated in provided data, but detailed in manual.
Torque:
Not explicitly stated in provided data, but detailed in manual.
Fuel System
Carburetor Type:
Not explicitly stated in provided data, but covered in manual (likely a single downdraft carburetor).
Fuel Capacity:
Not explicitly stated in provided data, but detailed in manual.
Lubrication
Oil Type Recommendation:
Manual will specify viscosity and API classification for engine oil.
Oil Capacity:
Not explicitly stated in provided data, but detailed in manual.
Ignition System
Ignition Type:
CDI (Capacitor Discharge Ignition), potentially with a magneto.
Starter System
Starting Method:
Recoil starter (kick start) and likely electric starter.
🔧 Transmission
Standard
Type:
Automatic (likely a Continuously Variable Transmission - CVT, or torque converter based automatic).
Gear Selection:
Not applicable for CVT/automatic, likely a selector for forward, neutral, reverse.
Features
Drive Mechanism:
Shaft drive (to rear wheels), potentially with limited-slip differential or solid axle.
Sub Transmission:
Manual covers sub-transmission operations, suggesting potential gear reduction or other selectable drive modes.
Fluid Specifications
Transmission Fluid:
Manual will specify recommended fluid type and capacity.
📐 Dimensions
Exterior
Overall Length:
Not explicitly stated in provided data, but detailed in manual.
Overall Width:
Not explicitly stated in provided data, but detailed in manual.
Wheelbase:
Not explicitly stated in provided data, but detailed in manual.
Weights
Dry Weight:
Not explicitly stated in provided data, but detailed in manual.
Curb Weight:
Not explicitly stated in provided data, but detailed in manual.
🛡️ Safety Features
Ratings
Crash Test Ratings:
N/A (ATV - Not applicable for standardized automotive crash ratings).
Active Features
Braking System Description:
Drum brakes on both front and rear wheels, as typical for this era and class of ATV.
Passive Features
Lighting:
Headlight, taillight, and brake light systems covered.
💡 Technology Features
Infotainment
Features:
N/A (This era of utility ATV did not feature infotainment systems).
Driver Assistance
Features:
N/A (Focus is on mechanical and electrical systems for operation and maintenance).
Connectivity
Features:
N/A (No electronic connectivity features).
🔧 Maintenance
Service Intervals
Oil Change Interval:
Manual will specify recommended intervals based on operating hours or mileage.
Air Filter Cleaning:
Manual will detail cleaning and replacement intervals for the air filter.
Spark Plug Maintenance:
Manual will provide specifications and recommended service intervals for the spark plug.
Fluid Specifications
Engine Oil Viscosity:
Manual will specify the correct SAE viscosity grade (e.g., SAE 10W-30, SAE 20W-40) and API classification.
Brake Fluid Type:
Manual will specify the DOT classification for brake fluid (likely DOT 3).
Gear Oil Type:
Manual will specify the type of oil for the final drive/gearbox if separate from engine oil.
Known Issues
Common Wear Items:
Manual covers maintenance for wear items such as brake pads, tires, spark plugs, and air filters.
Troubleshooting Focus:
Addresses common problems like starting issues, poor performance, and electrical faults, providing diagnostic steps.
📚 Vehicle History
Brand Heritage
Manufacturer:
Honda Motor Co., Ltd. - renowned for reliability and innovation in motorcycles and ATVs.
Model Evolution
Introduction Context:
The TRX125 Fourtrax was part of Honda's early expansion into the recreational and utility All-Terrain Vehicle market, building on their motorcycle expertise.
Product Line:
A foundational model in the Fourtrax line, preceding more powerful and feature-rich models. It established Honda's reputation for durable, user-friendly ATVs.
Production
Manufacturing Origin:
Likely manufactured in Japan or North America, consistent with Honda's production facilities during this period.
🏆 Awards & Recognition
Recognitions
Brand Reputation:
Honda's reputation for reliability and durability is a key factor in the enduring appeal of models like the TRX125.
Ratings
Performance Reviews:
While specific awards are not listed, contemporary reviews would have likely highlighted its ease of use and dependability for its intended purpose.
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