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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> adjusting decompression cable /cgi-bin/YaBB.pl?num=1167915496 Message started by franch on 01/04/07 at 04:58:16 |
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Title: adjusting decompression cable Post by franch on 01/04/07 at 04:58:16 the clymers says "lift up on the shaft to check that there is 3-5mm of freeplay " i don't get it. by shaft do they mean the shaft with a spring on it that goes into the head cover ? where exactly does one check for free play ? |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/04/07 at 05:49:00 Yes, that's the lever, but first remove the tank if you haven't done so. You lift the lever and then measure at the solenoid. |
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Title: Re: adjusting decompression cable Post by franch on 01/04/07 at 06:19:50 do you mean i lift the lever then measure how far the cable housing moves away from the solenoid ? |
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Title: Re: adjusting decompression cable Post by verslagen1 on 01/04/07 at 07:10:13 Let me put it this way, the lever has got to be really loose. 5mm is about .197" and 3mm is .112". On mine the lever just about hits the base of the bracket that holds it. In my experience with solenoids, the need for looseness is too give the solenoid a chance to build momentum. Solenoids develop maximum power at the end of their travel. So if you adjust it to tight, it might not pull in. I think as long as the lever is pulled in and the engine starts adjust it as loose as posible. |
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Title: Re: adjusting decompression cable Post by Reelthing on 01/04/07 at 07:48:58 well, seems to me you need to get a good measure on the solenoid first - on the right hand side (starboard) of the engine find the solenoid - there is a rubber cap that covers the end - you must pull this off - and then push the shaft through from the left(port) side and measure how far the shaft sticks out past the base. Make sense? |
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Title: Re: adjusting decompression cable Post by vroom1776 on 01/04/07 at 08:27:04 the adjsutment lever is in fact on the left side of the engine near the top. my valve adjust post in the tech section covers this a bit, with pics. I didn't know that about the solenoid... |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/04/07 at 09:59:50 If you want to take the measurement by the book, you are supposed to do it at the solenoid under the tank. Which is a good way to learn what you are dealing with... Essentially, if it is too tight, the decomp actuator may hold the exhaust valve rocker down...worse case being to hold the exhaust valves open, too. Not good. If the adjustment is too loose then the actuator may not be very effective in opening the exhaust valves during the starting cycle. Doesn't hurt anything but might make starting hard. If you know how the solenoid works, then the truth is that you can measure it at the lever. Give it about 3/16" slack and you're good...The choice is up to you. |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/04/07 at 10:04:21 Oh yeah...just for grins... You can't see the lever when sitting on the bike. If you can, get someone to help with starting the bike while you're watching the lever. That first click that you hear when you push the starter button is the solenoid pulling in... |
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Title: Re: adjusting decompression cable Post by vroom1776 on 01/04/07 at 10:19:44 hmmmm... gonna have to take a look at the manual... to me it read (haven't looked at it in a bit) to adjust at the lever... I prolly' misread it... S4B |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/04/07 at 10:22:07 Going out to get manual now :) Back...Here it is according to the SSM. I will summarize since I'm a slow typist :) Remove seat and tank Remove plug and timing inspection plug Put engine at TDC on compression stroke Pull the actuator body on the solenoid (lousy photo) and measure the end length on the shaft. Loosen lock nuts on lever, adjust cable at the lever to make measurement at solenoid 3-5 MM. ...You did misread it a little bit, but with the terrible photo in the manual it isn't very clear. I also know that once you do it this way, you'll find an easier way to do it next time...as I mentioned above. BTW - the first thing the SSM says in this section is: "Incorrect adjustment of the cable free play may result in starting difficulties or engine damage." |
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Title: Re: adjusting decompression cable Post by bentwheel on 01/04/07 at 10:35:39 Do it this way, and don't forget to be at TDCC. http://suzukisavage.com/cgi-bin/YaBB.pl?board=RubberSideDown;action=display;num=1110163653;start=1#1 |
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Title: Re: adjusting decompression cable Post by vroom1776 on 01/04/07 at 10:55:21 aha! I only read the " Loosen lock nuts on lever, adjust cable simple stuff is okay to do drunk (change the oil, remove the seat...), more comples stuff, liek reading the manual... maybe not! on the other hand, just rereading now I missed it again ??? :) |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/04/07 at 11:10:11 bentwheel wrote:
That's what I said...only not as thoroughly :o The best point that you made is the part about understanding it better when you see it. Now it's up to Franchie... |
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Title: Re: adjusting decompression cable Post by bentwheel on 01/04/07 at 11:33:05 Hey I didn't mean to steal your thunder Greg, but I did post it prior to your last edit. |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/04/07 at 11:40:22 bentwheel wrote:
Hey, it's not my thunder. We're all trying to help Franchie. I didn't know about your post, though. I wasn't trying to steal your thunder either... You know, I wonder if there's a way to have a "table of contents" for the technical reference section. Might make it easier...the search feature can be a little bit tedious. ...of course, then we wouldn't have these great discussions either. |
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Title: Re: adjusting decompression cable Post by franch on 01/05/07 at 00:04:37 I think i get it now. hold lever up, pull cap on right squeeze and measure. will try friday am. tyhanks all ! |
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Title: Re: adjusting decompression cable Post by justin_o_guy on 01/05/07 at 05:55:03 I wonder what the manual means with the "Maladjustment may harm you engine" part? Too loose? Seems that would work the pants off the starter. Too tight? Stay engaged & hold the ex valve open? Burn it? Tear the decomp up by trapping it between the valve tip & cam? I spose I'll try to not get it too tight. Fanch, if it's running poorly. is it possible this is it? |
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Title: Re: adjusting decompression cable Post by franch on 01/05/07 at 06:40:10 i hope it's that simple. by putting in a new camchain & tensioner i would imagine the decomp cable is moved ? it sure starts easier but after that well, junk. |
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Title: Re: adjusting decompression cable Post by justin_o_guy on 01/05/07 at 06:46:16 I have no idea if ya changed the adjustment on the decomp unit. IF ya di, it would be easier to check that that valves I guess. One thing I am learning, Going in the valves seems to be a grand opportunity to get in a bind. When it is my turn I will sure do my best to be very, very careful. Hope ya find it & fix it & it doesn;t cost a dime & is easy.. Good Lukk! |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/20/07 at 16:05:20 Been out working on the old beast, and thought that I'd check the decompression cable. Mine is way out of adjustment, too. I also realize that the SSM isn't very clear about this issue and the pictures are pretty poor. So it is photo time again. I hope this helps... http://i21.photobucket.com/albums/b277/gmdinusa/Decomp_1199.jpg http://i21.photobucket.com/albums/b277/gmdinusa/Decomp_1229.jpg http://i21.photobucket.com/albums/b277/gmdinusa/Decomp_1235.jpg http://i21.photobucket.com/albums/b277/gmdinusa/Decomp_1230.jpg http://i21.photobucket.com/albums/b277/gmdinusa/Decomp_1232.jpg |
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Title: Re: adjusting decompression cable Post by Max_Morley on 01/20/07 at 16:30:45 If you have some help you can energize the solenoid with fused 12 v jumper(Greg's picture shows the connector disconnected) and then measure th plunger extension. Not any better than by hand, but you do get to check the opeation of the solenoid that way. The one on my B-i-L's 87 was sticky and after cleaning and adjusting worked fine. Also fixed the hard to crank and start problem the previous owner had lived with. Also helped to get the sale price down where it was reasonable. |
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Title: Re: adjusting decompression cable Post by Savage_Rob on 01/20/07 at 21:26:18 I copied part of this over to a thread in the Tech Ref forum. |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/21/07 at 08:22:11 Savage_Rob wrote:
Good idea. I thought of that too, but I wanted to follow the thread first... ::) |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/21/07 at 08:25:49 Max_Morley wrote:
Yep. I disconnected the connector to get it out of the way for the camera (which was on a tripod because I wasn't using a flash) You also know if the solenoid is working (even when the tank is on) by the click sound before the starter turns. PS - you might notice that the pictures are in order for taking the measurement, but that isn't how I took them. That is why the connector is disconnected and then reconnected...a hindsight shot :) |
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Title: Re: adjusting decompression cable Post by justin_o_guy on 01/21/07 at 11:30:38 Well,, OOkay! Thanks, Greg & everyone involved. I knew I was confused, but had no idea how badly till those pics got posted. NOW I know how to adjust the solenoid. Where to measure is about crucial if adjustments are to be made. |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/21/07 at 16:13:18 justin_o_guy wrote:
I took a couple more shots when I finished it today, and I'll post them tomorrow. Another thing that is really needed in the SSM is the recommendation that you open the exhaust valve cover to make sure that the piston is TDC on the compression stroke. If you aren't careful you could make the adjustment with the piston at TDC on the exhaust stroke if just going by the valve timing marks. My manual says nothing about doing that... |
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Title: Re: adjusting decompression cable Post by Greg_650 on 01/21/07 at 19:13:04 This shows an example of the gap between the decompression lever cam and the exhaust valve rocker when the solenoid is set with to 4 MM. http://suzukisavage.com/images/uploaded/Decomp_1276.jpg |
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