Howdy Rob, Early versions of the 870 engine control didn't have the throttle tensioning screw located on the starboard aluminum "boss" on the control casting. The common option to reduce the effect of the throttle return spring was to install a cable clamp around the throttle cable with just enough tightness to create friction and keep the throttle from closing. My Landfall 35 has a different control (model 737) than yours but has the same clamp arrangement. Getting the right setting is a bit of a trial and error arrangement and will vary with cable wear.
As an alternate solution, you can drill and tap the casting to accept a 1/4"x 3/4" 20 tpi thread bolt or screw and bear down slightly on the plastic collar through which the throttle lever runs on the control. Its not a bad idea to replace the white plastic collar when you do that. Keep in mind that you can adjust or remove a clamp mounted externally from the pedestal if it is located in an easily accessible spot, but having the adjustment inside the pedestal requires removing the compass to make adjustments over time. (More work, yes, but it is also an excuse to lubricate the pedestal wheel shaft bearings and run some 30 weight oil over the steering chain with a rag and check for broken or worn teeth on the sprocket, you know, the annual steering inspection and service that virtually nobody ever does...) I also know that Edson recently revamped their website and their tech bulletins weren't available online for a while. They're up and running now and the one you need to reference is here: https://edsonmarine.com/content/EB396EngineControlInstr.pdf Hope this helps... give a shout offline in case you need more info. Cheers, Chuck Gilchrest S/V Half Magic 1983 LF 35 Padanaram, MA -----Original Message----- From: CnC-List <cnc-list-boun...@cnc-list.com> On Behalf Of robert via CnC-List Sent: Wednesday, May 30, 2018 9:55 AM To: cnc-list@cnc-list.com Cc: robert <robertabb...@eastlink.ca> Subject: Stus-List Edson Throttle Tensioning Screw/Bolt I am pretty sure my boat has the Edson #870 pedestal....SS throttle on the starboard side, SS gear shifter on the port side. I have been searching the Edson Marine website to learn about the 'throttle tensioning screw/bolt' but have had no success accessing any information on it......specifically, where exactly is it located and how do adjust the tension on the cable so that the engine holds an RPM. My throttle currently has a 'clamp' on the cable that can be tensioned however if there is a better way to properly tension the throttle cable, I would like to experiment with that. Chuck Gilchrist, I suspect you might have specific knowledge of this..... if you read this, your input would be greatly appreciated. Rob Abbott AZURA C&C 32- 84 Halifax, N.S. _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
