The valve clearance for a 1987 Yamaha Moto 4 350 quad is typically set at 0.10 mm (0.004 inches) for both the intake and exhaust valves. It's essential to check the owner's manual or service manual for specific specifications and adjustments, as tolerances may vary slightly based on the model or engine condition. Regular maintenance and checking of valve clearances can help ensure optimal engine performance.
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