Honda CRF 150F won't run without choke?

2009 Honda CRF 150F dirtbike, after over an hour riding I still can't turn off the choke. The bike just bogs and shuts off. Will run on half choke.

The carb needs to be cleaned, especially the main and pilot jets as your bike is running lean.

Too lean. Maybe a monster air (vacuum) leak somewhere.

Fuel flow is poor. Choke allows more fuel to enter carburettor. Give the fuel system a clean out, tank, hoses, filters, carburettor. When removing the Jets, blow air through them, and also blow air down the passages they where removed from.

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