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2012 Suzuki DF300ap 8-3 shift control error

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2012 Suzuki DF300ap 8-3 shift control error

Old 11-28-2015, 05:03 PM
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Default 2012 Suzuki DF300ap 8-3 shift control error

I am getting the 8-3 shift control error intermittently on my 2012 DF300ap. Any ideas how to fix it? When it happens I cant shift out of gear but still have throttle control. If I shut down the engine and turn off the battery switch for a few seconds I can restart the engine and it goes away. I happened to me 3 times today.

Thanks!
Old 11-28-2015, 05:19 PM
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Doesn't sound safe! Time for a trip to your dealer.
Old 11-28-2015, 05:40 PM
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There was a recall at some point for a shift issue but it may have only been on the counter rotating motor. I used to have issues with shift errors when I had a bad battery also.
Old 11-28-2015, 05:54 PM
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If the bushings in the vertical shaft shift shaft from the shifter solenoid get corroded then it will not shift properly. If you disconnect both sides of the vertical shift shaft it goes through the lower cowling it should be able to move easily with two fingers. If It takes more than one pound of pressure to rotate it then it needs to be fixed. Mine was super stiff and I got stuck in gear twice at the dock it was not fun.
Old 11-29-2015, 11:32 AM
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Could this be battery related? My batteries are 4 years old.
Old 11-29-2015, 03:11 PM
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Originally Posted by tortuga View Post
If the bushings in the vertical shaft shift shaft from the shifter solenoid get corroded then it will not shift properly. If you disconnect both sides of the vertical shift shaft it goes through the lower cowling it should be able to move easily with two fingers. If It takes more than one pound of pressure to rotate it then it needs to be fixed. Mine was super stiff and I got stuck in gear twice at the dock it was not fun.
I would definitely look into this scenario as being your problem, I've seen this numerous times when those linkages do not get lubricated regularly. And if your batteries are 4 years old, Change them too, your on borrowed time. Hopefully this gets you going.
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Old 12-11-2015, 01:03 PM
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Ended up being the linkage. Took it apart cleaned it and regressed and it seems to be fixed.
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Old 10-29-2018, 11:45 AM
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Default Having the same problem

Hey! Im having the same problem!! Can you please expand what so you mean by linkeage? Im in area where we dont have suzuki dealership so Im on my own! Thanks in advance for your help sirs!!
Old 10-29-2018, 07:14 PM
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Originally Posted by Larchadrian View Post
Hey! Im having the same problem!! Can you please expand what so you mean by linkeage? Im in area where we dont have suzuki dealership so Im on my own! Thanks in advance for your help sirs!!
There is a motorized shift linkage on the starboard side of the Engine if it gets corroded and takes too much force to move it will throw the error. You can try taking it apart and cleaning it.
Old 10-30-2018, 04:58 AM
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Its the linkage that the electronic shift actuator hooks up to the mechanical linkage that goes to the lower unit. It is on stbd side of motor, you need to remove the side pan and disconnect the link arm(MUST HAVE POWER DISCONNECTED BEFORE DOING SO) if the mechanical linkage is at all tight or stiff you must clean and grease it, may even have to change out the plastic bushings.
Old 10-31-2018, 05:09 AM
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Originally Posted by Outboard Specialties View Post
Its the linkage that the electronic shift actuator hooks up to the mechanical linkage that goes to the lower unit. It is on stbd side of motor, you need to remove the side pan and disconnect the link arm(MUST HAVE POWER DISCONNECTED BEFORE DOING SO) if the mechanical linkage is at all tight or stiff you must clean and grease it, may even have to change out the plastic bushings.
OS can correct me if I'm wrong, but I think that this is one of several minor or not so minor problems that Suzuki has corrected along the way with the DF300. On my 2010 model the only way to lubricate and keep the shift linkage operating smoothly was to disassemble, clean and lubricate. On my 2017 DF300 there is a grease fitting to lubricate the linkage as a part of routine maintenance. The 2017 model also has a zerk to grease the seal at the top of the driveshaft to minimize water intrusion and the problem of the driveshaft spline corroding and binding in the driven gear if the lower unit is not dropped on a regular basis.
Old 11-12-2018, 05:33 PM
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Originally Posted by Outboard Specialties View Post
Its the linkage that the electronic shift actuator hooks up to the mechanical linkage that goes to the lower unit. It is on stbd side of motor, you need to remove the side pan and disconnect the link arm(MUST HAVE POWER DISCONNECTED BEFORE DOING SO) if the mechanical linkage is at all tight or stiff you must clean and grease it, may even have to change out the plastic bushings.
In the spirit of reading expert advice after the fact, if you did not have power disconnected prior to doing this and found the actuator all the way extended, you can trace the actuator wire to a white 2 wire connector, disconnect, and use a set of multi meter leads hooked to 12v to get the actuator back in neutral position... don't ask how I know. Actuator goes one way positive/negative and the other way negative/positive so reverse polarity not an issue.
Old 11-12-2018, 06:47 PM
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Can you share more details about this process? I have a pair that I needed to replace on my 2016 engines that I would like to restore to proper function. Man, replacing them was an expensive lesson in disconnecting the power supply.
Old 11-12-2018, 08:50 PM
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I'm not really sure what you mean, but basically, when you disconnect the linkage from the shift actuator and manually manipulate the shift linkage with the lower unit off, I believe it's when you move off of the neutral safety switch the actuator will fully extend. You can't unbolt the actuator easily, and you can't get to the bolt to remove the linkage arm from the actuator cog to turn it so that it lines up properly. So what I did was I positioned the linkage centered on the neutral safety switch (key off) and applied 12v power to the actuator wires (of which there are two) alternating current for very brief pulses until the actuator lined up with the linkage centered on the neutral safety switch.
Old 11-12-2018, 11:30 PM
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Thanks mine has been stuck in the forward position for a couple days after disconnecting the linkage to lube every thing up.

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