Vintage Mercury Kiekhaefer Outboard 29690 Electric Start Choke Solenoid Mark. Inclement weather in my region. Item Description Mercury Part Number 29690 Electric Choke Solenoid used on Mark (and possibly others).Tested & working, wire in good shape. The item "Vintage Mercury Kiekhaefer Outboard 25208 Electric Start Choke Solenoid Mark 25E" is in sale since Thursday, November 05, 2015. This item is in the category "eBay Motors\Parts & Accessories\Boat Parts\Outboard Engines & Components\Other". The seller is "searl_24" and is located in Coldwater, Michigan. This item can be shipped worldwide.