2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 97Get this manual
FUEL SYSTEM Be care (II n01to
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Install th pump cover while compressing the spring and tighten three screws securely
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Install the collar and bolt into the accelerator pump arm Install the plastic washerplain washerspring washer onto the boltInsta ll he pump arm assembly so it is set onto th diaphragm shaft and th rottle drum and ighten th bolt securely
ACCELERATOR PUMP ARM