1987-1999 Yamaha Big Bear 350 YFM350FW ATV Service Manual
Covers Big Bear 350 & YFM350FW ATV systems including engine, carburetor, chassis, and electrical components. PN 4WU-W0747-00-AD
Manual Preview
Sample pages from the 1987-1999 Yamaha Big Bear 350 YFM350FW ATV Service Manual manual
Purchase & Download
Models Covered & Key Technical Specifications
Essential Installation Manual: ATV Yamaha Big Bear 350, YFM350FW ATV Service Manual - Factory Diagnostics & Service Procedures (1987-1999) Factory-Standards
Big Bear 350 (YFM350FW) (4WU-W0747-00-AD) — 1987-1999 Series Catalog.
- Prescribed Resolution Data: 20 Nm corresponds to the front hub torque specifications.
- Standard Output Density: For engine overhaul, 115 N·m defines the main bearing cap torque.
- Maximum Locking Torques: The front brake caliper requires 9 Nm for proper assembly.
- System Measurement Bounds: The rear wheel bearing nut requires 240 Nm for secure mounting.
- Calibrated Environmental Range: For optimal operation, 11.4–13.4 mm defines the float height.
- Nominal Package Size: The starter motor mounting bolts are specified at 10 Nm torque.
Professional Workshop Service Manual & Technical Specifications
Essential Installation Manual: ATV Yamaha Big Bear 350, YFM350FW ATV Service Manual - Factory Diagnostics & Service Procedures (1987-1999) Factory-Standards
Specification-Class: Big Bear 350 (YFM350FW) (4WU-W0747-00-AD) // Validation-Data: ATV / Motorcycle Logic // Model-Designation: 1987-1999.
The documentation is partitioned into sections covering general information, periodic inspections, engine overhaul, carburetion, chassis systems, and electrical diagrams. It details disassembly, assembly, and repair procedures to assist technicians in maintaining and servicing the Yamaha Big Bear 350 and YFM350FW ATVs.
Engine Service Details
Suspension service documentation covers the front and rear shock absorber adjustments and free play inspections. Disassembly instructions are documented for steering knuckles and tie-rod ends, including their toe-in adjustment procedures. Wear limits are specified for brake pads and discs, ensuring safe operation.
Chassis and Electrical Systems
This manual provides detailed steps for servicing the front and rear wheels, including hub and brake shoe removal. It outlines the procedure for inspecting and adjusting the steering system, as well as troubleshooting common issues. System operation descriptions cover the ignition, lighting, and signal systems, providing clear diagnostic guidance.
Technical Specifications Overview
| Assessment-Element | Diagnostic-Logic | Calibration-Spec |
|---|---|---|
| Engine Overhaul Torque | 115 Nm (85 ft-lb) | Main Bearing Cap |
| Front Brake Torque | 9 Nm (6.5 ft-lb) | Caliper Mounting |
| Rear Wheel Torque | 240 Nm (177 ft-lb) | Final Tightening |
| Carburetor Float Height | 11.4-13.4 mm (0.45-0.53 in) | Standard Measurement |
| Starter Motor Torque | 10 Nm (7.4 ft-lb) | Bolt Specification |
| Front Shock Preload | Adjustable | Rider Preference |
The documentation addresses the drive shaft and final drive gear, including inspection and repair procedures. It documents torque specifications for various components to ensure proper bearing preload accuracy.
FAQ
Customer Reviews
Read what our customers say about this Yamaha ATV manual and share your own experience.
Add a Review
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
- Your name, rating, website address, town, country, state and comment will be publicly displayed if entered.
- Aside from the data entered into these form fields, other stored data about your comment will include:
- Your IP address (not displayed)
- The time/date of your submission (displayed)
- Your email address will not be shared. It is collected for only two reasons:
- Administrative purposes, should a need to contact you arise.
- To inform you of new comments, should you subscribe to receive notifications.
- A cookie may be set on your computer. This is used to remember your inputs. It will expire by itself.
This policy is subject to change at any time and without notice.
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
- Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.
- You acknowledge that all comments express the views and opinions of the original author and not those of the administrator.
- You agree not to post any material which is knowingly false, obscene, hateful, threatening, harassing or invasive of a person's privacy.
- The administrator has the right to edit, move or remove any comment for any reason and without notice.
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
Reviews (4)