1987-2004 Yamaha YFM350 Warrior ATV service manual

This manual is applicable to the following models: YFM350 Warrior / Yamaha Motor Company 1987 YFM350XT 1988 YFM350XU 1989 YFM350XW 1990 YFM350XA 1991 YFM350XB 1992 YFM350XD 1993 YFM350XE 1994 YFM350XF 1995 YFM350XG 1996 YFM350XH 1997 YFM350XJ 1998 YFM350XK 1999 YFM350XL 2000 YFM350XM 2001 YFM350XN 2002 YFM350XP 2003 YFM350XR 2004 YFM350XS Engine: 348 cc, 4-stroke, 1 cylinder, SOHC, 19HP. Model or production year(s): 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Language: English Printable: Yes (all printers) Instant delivery: Your download link will appear on the checkout page after your payment is complete. # ³ "Get the Ultimate Manual for ATV Fixes: Yamaha YFM350 Warrior Engine Specs, Maintenance Tips, Tuning, and More!" If you own a Yamaha YFM350 Warrior ATV manufactured between 1987 and 2004, you're in luck! Our comprehensive manual offers a wealth of information, from detailed engine specifications to maintenance intervals, common issues, tuning tips, and available accessories. Whether you're an experienced owner or a new enthusiast, this guide will equip you with the knowledge you need to keep your YFM350 Warrior running smoothly. Read on to discover the technical specifications, interesting facts, maintenance advice, and much more about these iconic ATVs. Engine Specs/Technical Specifications: • The Yamaha YFM350 Warrior is equipped with a 348cc air-cooled, four-stroke engine. • It features a single overhead camshaft (SOHC) design for optimal performance. • The engine has a bore and stroke measurement of 83mm x 64.5mm. • Compression ratio is set at 9.0:1 for efficient power delivery. • The YFM350 Warrior utilizes a Mikuni BST34 carburetor for fuel intake. • It has an electric starter system for quick and convenient ignition. • The ATV comes with a CDI ignition system, ensuring reliable spark timing. • The transmission is a five-speed manual with a reverse gear. • The YFM350 Warrior employs a shaft drive system for smooth power transfer to the rear wheels. • The front suspension consists of independent double wishbone with 5-way preload-adjustable shocks. • At the rear, there's a swingarm suspension with a single shock, adjustable for preload. • The ATV features dual hydraulic front disc brakes and a rear sealed drum brake for reliable stopping power. • The YFM350 Warrior has a fuel capacity of 2.4 gallons (9 liters). • It weighs approximately 440 pounds (200 kg) without fluids. • The wheelbase measures 47.2 inches (1,200 mm) for stability and maneuverability. • Ground clearance stands at 6.3 inches (160 mm) to handle various terrains. • The ATV has a total length of 72.6 inches (1,844 mm), width of 40.9 inches (1,039 mm), and height of 42.5 inches (1,080 mm). • The YFM350 Warrior comes with 22x7-10 front tires and 22x10-9 rear tires. • It has a reliable electrical system, including a maintenance-free battery and a 200W alternator. • The ATV features a robust steel frame for durability and rigidity. Facts and Details: - The Yamaha YFM350 Warrior was introduced in 1987 as a sporty and versatile ATV. - It gained popularity for its powerful engine and nimble handling characteristics. - The YFM350 Warrior featured a stylish design with aggressive bodywork and distinctive graphics. - It was known for its reliability, making it a popular choice for both recreational riders and racers. - The ATV was often praised for its excellent power-to-weight ratio, delivering impressive acceleration. - The YFM350 Warrior was designed to excel in various terrains, from trails to sand dunes. - It offered a comfortable riding position and ergonomics, allowing riders to enjoy extended adventures. - Many owners appreciated the ATV's low-maintenance requirements and ease of servicing. - The YFM350 Warrior's rugged construction made it capable of enduring challenging off-road conditions. - It became a favorite among ATV enthusiasts who sought a balance between performance and reliability. - Yamaha offered a range of official accessories for the YFM350 Warrior, including racks, skid plates, and winches. - The ATV had a loyal following, with many owners forming dedicated online communities to share their experiences and modifications. Maintenance Intervals, General Maintenance Tips, and Common Issues/Solutions: + Oil changes should be performed every 20-25 hours of operation or annually, whichever comes first. + Regularly inspect and clean the air filter to ensure proper airflow and prevent engine damage. + Check and adjust the valve clearance every 600 miles (1,000 km) or as recommended by the manufacturer. + Lubricate the drive chain every 100 miles (160 km) or when it appears dry. + Monitor the brake fluid level and replace it every two years to maintain optimal braking performance. + Regularly inspect the tires for wear and proper inflation to ensure safe handling. + Clean the spark plug and replace it every 6,000 miles (10,000 km) or as necessary. + Common issues with the YFM350 Warrior include carburetor problems, such as clogged jets or improper adjustment. Cleaning or rebuilding the carburetor can resolve these issues. + Another common problem is a faulty ignition coil, leading to intermittent spark or a no-start condition. Replacing the ignition coil usually solves this issue. + Some owners have reported issues with the electric starter not engaging or spinning weakly. This can be due to a faulty starter solenoid or worn starter gears, requiring replacement or adjustment. + The YFM350 Warrior's swingarm bushings may wear out over time, resulting in excessive play and reduced suspension performance. Replacing the bushings can restore proper operation. Popular Tuning Tips or Modifications: * Upgrading the exhaust system to a high-performance aftermarket option can enhance power delivery and improve sound. * Installing a jet kit or rejetting the carburetor can optimize fuel-air mixture for improved throttle response and performance. * Adding a high-flow air filter, such as a foam or K&N filter, can increase airflow to the engine and boost horsepower. * Upgrading the suspension components, including shocks and springs, can enhance the YFM350 Warrior's handling and ride comfort. * Swapping the stock wheels and tires for wider and more aggressive options can improve traction and stability in challenging terrain. * Adding a skid plate or A-arm guards can protect the ATV's underside from rocks, logs, and other obstacles. Available Accessories and Aftermarket Options: - Yamaha Genuine Accessories: Racks, cargo boxes, winches, bumpers, brush guards, and more. - Aftermarket Exhaust Systems: FMF, HMF, and Big Gun are popular brands offering performance exhaust options. - Jet Kits: Dynojet and Moose Racing provide jet kits for carburetor tuning. - Air Filters: K&N, Uni Filter, and Twin Air offer high-quality air filters for improved airflow. - Suspension Upgrades: Works Performance, Elka Suspension, and Fox Racing Shox provide aftermarket shocks and springs. - Wheels and Tires: ITP, Maxxis, and Sedona offer a wide range of ATV tires and wheels for various terrains. - Skid Plates and Guards: Ricochet, DG Performance, and Maier USA produce protective accessories for the YFM350 Warrior. Owner Reviews and Opinions: Strengths: Powerful engine, excellent acceleration, nimble handling, reliable performance, comfortable ergonomics. Strengths: Low-maintenance, durable construction, versatile for different terrains, strong aftermarket support. Weaknesses: Limited ground clearance for extreme off-road conditions, could benefit from upgraded suspension components. Weaknesses: Some owners reported occasional electrical issues, such as faulty wiring connections or intermittent starting problems. Repairs Most Frequently Needed: • Carburetor cleaning/rebuild • Ignition coil replacement • Starter solenoid replacement/adjustment • Swingarm bushing replacement Click the green button to initiate the download of the comprehensive PDF troubleshooting guide for Yamaha YFM350 Warrior. Purchase it securely via PayPal on the RepairLoader marketplace Upon completing your payment, the official Yamaha OEM shop manual and parts list download link will be displayed on the checkout page. Additionally, we will promptly email you the payment and download details for your convenience. §

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