If the hose/bulb isn’t at fault the low speed jets mentioned by others is a good possibility. If you have any Kroil on hand saturate the carbs. Turn the motor a few cranks then spray it again. Let it sit a day then run. Cured a badly gunked merc V6.
“When Tyranny becomes Law, Rebellion becomes Duty”
Colossians 3:17 (New King James Version)
"And whatever you do in word or deed, do all in the name of the Lord Jesus, giving thanks to God the Father through Him."
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