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Subjects>Auto>Motorcycles & Offroad Vehicles

What makes a Yamaha big bear 400 backfire thur the carb and exhaust?

Anonymous

∙ 13y ago

Updated: 9/20/2023

Loose intake boot or the boot may not be on straight. Happens everytime.

Wiki User

∙ 13y ago

What else can I help you with?

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