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General Category >> Rubber Side Down! >> Decompression lever
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Message started by reb on 04/18/13 at 13:05:02

Title: Decompression lever
Post by reb on 04/18/13 at 13:05:02

Hello everyone,

I seem to be having a problem with my decomp lever. I have removed the solenoid for the manual decomp. When trying to start the bike there seems to be no difference between pulling the lever up, and not touching the lever at all. I'm replacing my starter first tomorrow, but I would still like to know what's "wrong" with my decomp lever.

Title: Re: Decompression lever
Post by Dave on 04/18/13 at 13:54:50

You might pull the valve adjustment cap off the front of the engine so you can look inside to see how the lever works. When down the exhaust valve rocker can move up and down without restricition. Then the lever is pulled up it should hold the exhaust rocker open.....after the cam has lifted it.

When you see how it works.....you will have a better understaning of how to operate it.

Dave

Title: Re: Decompression lever
Post by Dane Allen on 04/18/13 at 14:26:57

142F2235242833352E262B34470 wrote:

Hey, thta's a good idea. I need to do a valve adjustment and I will make it a point to look at this. Thanks!!!

Title: Re: Decompression lever
Post by Cavi Mike on 04/18/13 at 14:59:54

You're prolly not actually engaging the exhaust valve. It's pretty hard to move that small lever all the way. Once you get it into place and open the exhaust valve, trust me, you'll notice a difference. The engine spins really fast because it no longer has any compression. Also, the lever will pop right back as soon as you hit the starter button - you have to hold it in place when you first crank the bike. This is why you'll want a custom one that's longer and has more leverage.

Title: Re: Decompression lever
Post by clearush on 04/18/13 at 18:19:34

I suggest one of these

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1338020228

I couldn't get enough torque on the decomp lever without it.

Title: Re: Decompression lever
Post by reb on 04/20/13 at 13:17:13

Thanks everyone for the quick replies! I looked into the engine by removing the cap on top and I could see the exhaust valve. So you actually have to apply a great deal of force onto the leaver? I thought you only had to move the leaver just a tiny bit to open the exhaust valve? I'm afraid I might break it...

Title: Re: Decompression lever
Post by 45acp on 04/20/13 at 19:35:55

okay maybe this is a dumb question. how are you supposed to hold that lever, and your clutch handle, and still hit your starter button?

Title: Re: Decompression lever
Post by reb on 04/22/13 at 03:11:23

That depends, in my case I have the foot pedal mod like the Ryca bikes. The original shifter pedal is used to decompress the engine.

Option 2, you could mount one of those manual leavers directly onto the decompression leaver. But in that case you would have to modify the wiring and disengage the clutch from the wiring so that the engine turns over without having to pull in the clutch.

Title: Re: Decompression lever
Post by Dave on 04/22/13 at 04:36:14

So......does the lever "need" to be able to push the exhaust valve down? Is the electric solenoid strong enough to do that with that tiny little cable......or does it just rotate into position at the next rotation whene the cam pushes the valve open?