1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 98Get this manual

FUEL SYSTEM Remove the primer kn ob alld spring PRIMER KNOB

Check the d'iaph,agm for tears or other damage
DIAPHRAGM

DIAPHRAGMVACUUM PISTON

The diaphragmvacuum piston can, be removed wlthout removing the float chamber
Remove Ule vacuum chamber cover by removin the fo1Jr St::reWS

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives