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Old 10-22-2015, 06:25 PM   #5
Al
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City: ketchikan, Alaska
Vessel Name: 'SLO'~BELLE
Vessel Model: 1978 Marben-27' Flybridge Trawler(extended to 30 feet) Pilothouse Pocket Cruiser[
Join Date: Apr 2012
Posts: 2,206
We Googled Perkins engine operator/shop manual. Within one of those documents you will find the location of the SN for your model.

On our 4-236 the location is left side looking forward on the engine block.

Google seems to have many solutions on any subject.😜
Al
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