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Yamaha F350 stuck in forward

Old 12-24-2019, 10:25 AM
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Default Yamaha F350 stuck in forward

Wondering thoughts on Yamaha fly by wire shift solenoid. Noticed a little rattle last week when docking, on Saturday port engine was stuck in forward. After shutting it down it would go back and forth into forward but no reverse. Mechanic didnít seem to worried. Said didnít think it was the LU. Sounded like a electronic shift solenoid. Anyone had an issue like this before. No one will touch it till after the new year. Boat still in wet slip so havenít drained lower to check oil. Thanks
Old 12-24-2019, 11:19 AM
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Is it stuck in forward (won't go into neutral) or not?

When you move the throttle/shift handle rearward does the servo try to go to reverse or is it doing nothing?
Old 12-24-2019, 11:43 AM
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Was stuck in forward until I cut it off. Then after I got in the slip with the other motor I tried it again and it would go in and out of forward but not in reverse. Back at home for the holiday season havenít checked much out yet. Shifter seemed to be operating fine.
Old 12-25-2019, 06:43 AM
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Happened to my F350. LU . Put it in neutral and it stays in forward gear.
Old 12-26-2019, 11:13 AM
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I guess your saying your LU went bad? Water infusion? Did it come out of forward after killing power? Mine did. Also remember a service engine code while I was trying to get it shut off and in my slip in a tight area. Out of town for the holidays, hoping for an electrical sender issue between throttles. Thanks
Old 12-26-2019, 02:22 PM
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Check to see if there is a bolt or something lodged where the shift shaft toggles at the forward lower area of your block. I had a bolt come loose from somewhere on my Z300 and fall or migrate into that area and prevent engaging reverse. Retrieved the bolt with the mechanic fingers and all was good. Never found the source of where the bolt came from.
Old 12-26-2019, 05:08 PM
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The LU failed. IDK why. No error code but check engine light came on. I was well offshore when it happened. The throttle would go to neutral and reverse, but props kept propelling forward. My instinct was to not shut it down. It would run fine in forward, but on way in, it stopped turning the prop. Then I shut it down. Never worked again til LU replaced. Hopefully yours is something different. Good luck
Old 12-26-2019, 07:41 PM
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Thatís a pretty known issue on f350ís getting stuck in gear from motors that sit. Unfortunately the power head has to be pulled to do the repair.
Old 12-27-2019, 09:39 AM
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Is the issue LU replacement? Or something involved with the shifter in the motor? Come to think of it, it was a service engine flashing when I shut it off. Boat is used a lot, fished a lot so it doesnít come from sitting. Just trying to figure out how expensive this will be.
Old 12-27-2019, 09:57 AM
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The boat was also flashing on the gauge. I believe it was something related to shifting only and not the actual lower unit but its not my boat, not sure on the cost but I am sure there has to be quite a few hours in pulling the powerhead. Is the boat kept in the water?
Old 12-27-2019, 10:57 AM
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Yes boat stays in the water from March thru Bluefin season. Except for a few haul outs for bottom work and regular service. Starling said they would drain LU oil and check for codes. If oil looked normal they would start checking other things. Motors have about 500 hours. Up till now they have been flawless. Thanks
Old 12-27-2019, 11:02 AM
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It happened to me. Shift shaft was corroded and couldnít get back to neutral. It wonít give you a code but the throttlesí blue light will blink orange. Happened to me at around 600hrs.
Old 12-27-2019, 11:16 AM
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Sitting in the water is probably whatís doing it. I know this happened on one trip I was on and then almost the very next trip on another motor. The second time Yamaha covered the 3rd one that wasnít messed up yet also. Boat is still under warranty and I would be surprised if it has 300 hours on it but has been in the water and not run enough in between trips.
Old 12-27-2019, 02:53 PM
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happened to me as well but mie was the L/U, easy way to check drop the lower and fire it up, see if it shifts. Do you have a blue or orange led on the control?

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