I assume that you have a Yanmar transmission. The shift lever mechanism is quite complicated and Yanmar have specific requirements about the minimum length of throw from neutral to ensure full engagement of F&R. I just spent an hour or so with my head upside down adjusting the transmission on my 2gm to spec. The attached link –( see dwg 2-1 angular adjustment in particular) is for a KM2_A transmission and I think you probably have a KM3-A. The shift mechanism is the same for each. If you don’t have the KM3_A google the transmission you have and find a copy of the shop manual and follow the instructions for checking and adjusting the shift mechanism.
http://www.soverel33.com/Boat/Engine/Ch08/Content.html Martin Recalculating C&C 29-2 From: Ainslie [mailto:ains...@hay.net] Sent: Wednesday, May 11, 2016 10:07 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List Soft thumping/banging when in gear at low-rpm? My 35-3 has the same issue. The PO advised me about it, and we experienced it a bit while sailing her home last fall. Launched and sailed today and it was knocking a little more than last fall. But I recall someone on the list said to make sure the shifter lever is hard ahead. Mine wasn’t. When I held the lever there, no knocking at all through the rpm range. Do you think I can adjust the cable or levers to hold the shifter firmly in Fwd, or am I still looking at lapping the cones? The bungee cord was my friend today! Thanks, Jason Ainslie, Spirit C&C 35-3 Bayfield, ON _____ From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Andrew Means via CnC-List Sent: May-11-16 2:56 PM To: cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> Cc: Andrew Means Subject: Re: Stus-List Soft thumping/banging when in gear at low-rpm? Guys this is fantastic information (and hopefully not too expensive)! Thanks to everybody for all the info. If I end up doing the work to remove the transmission I'll do my best to document the process for posterity. On May 10, 2016, at 11:17 AM, Brian Davis via CnC-List <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> > wrote: Thank you!!!! <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> www.avast.com On Tue, May 10, 2016 at 1:49 PM, Dave Syer via CnC-List <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> > wrote: I used the auto supply stuff - “weapons-grade” is not so available up here in Canada! 😉. I brushed a thin film of the compound (basically grit in grease) onto the mating surfaces, mated them, and rotated the cone back and forth. Did not do complete rotations only because Mr. Robinson told me not to in shop class back in ’78. (lawn mower valves – different thing as they don’t rotate in use.) Again, make sure you reassemble the parts as they were removed, (mark with a punch) and be really careful to clean away the compound. A solvent wash will show you how much grit there is, and how gritty is that grit. Here is a pretty decent link on this, one of the posts refers to a site with photos, where you can see the various parts. You will need a gear puller. http://forums.sailinganarchy.com/index.php?showtopic=154931 Dave Message: 1 Date: Tue, 10 May 2016 09:07:32 -0400 From: "Rick Brass" <rickbr...@earthlink.net <mailto:rickbr...@earthlink.net> > To: <cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> > Subject: Re: Stus-List Soft thumping/banging when in gear at low-rpm? Message-ID: <004b01d1aabc$ea4ca480$bee5ed80$@earthlink.net <http://earthlink.net> > Content-Type: text/plain; charset="utf-8" Or this. Available at most any local auto parts store for a lot less cost. http://www.autozone.com/shop-and-garage-tools/valve-grinding-compound/permatex-valve-grinding-compound/526806_0_0/?checkfit=true http://www.brownells.com/gunsmith-tools-supplies/metal-prep-coloring/abrasives/lapping-compounds/lapping-compounds-prod1137.aspx _______________________________________________ This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated! -- Brian Davis 1980 C&C Landfall 38 "Nina" <https://docs.google.com/uc?id=0BxaAN3B_Cl8LcHZVUWJZOFptWndLaDd6UjYtN1F4cDlXTk1R&export=download> _______________________________________________ This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated!
_______________________________________________ This list is supported by the generous donations of our members. If you like what we do, please help us pay for our costs by donating. All Contributions are greatly appreciated!
