Suzuki - Trolling Mode Control Switch Assembly - See Description for Engine Models - 37860-87L00 The Suzuki trolling mode control switch assembly enables the use of the Suzuki Troll Mode on engines that are equipped with it. By engaging the Troll mode, you can easily adjust the engine RPM in increments of 50 RPM, from idle to 1200 RPM, to set and maintain a trolling speed. You can find more information about the Suzuki Troll System operation in the owner's manual or by consulting a Suzuki Outboard Dealer. This Suzuki trolling mode control switch assembly is compatible with the following Suzuki outboard engines: DF 40A DF 50A/50AV DF 60A/60AV DF 70A DF 90A DF 115A DF 140A DF 200AP DF 250AP DF 300AP