93 Johnson 70 HP 3 cyl. Idle problem

by Fred Briggs
(Hayward, Wisconsin U.S.A)

Have a 93 Johnson 70 HP 3 cyl. Starts and idles all day long until you trim down the deeper the exhaust goes the slower the idle. After 20 secs or so with motor all way down dies. Idle set at 900 - 1000 rpm.

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