1991 Yamaha Outboard Factory Service Manual 9.9 and 15 HP, Page 39Get this manual

Quality of the image is intentionally reduced!

eFuel flow when the choke is closed
ct Mixture
1 Main jet 2 Main nozzle 3 Poppet valve 4 Air passage 5 Pilot jet

When the choke is closed, the air flow is restricted by the po

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