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Old 16 September 2013, 15:31   #1
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New member needs help. 2001 yamaha 25hp 4-stroke not starting. Video included

Hello all. I am so glad to have found this site. I recently bought a 10-foot RIB with 2001 F25TLRZ 4-stroke outboard. The boat was running great and one day it just shut off and never turned back on. It cranked just fine but did not start. After doing some inspecting I discovered that the fuel filter water separator was corroded so badly that it was causing leaks. I have since bought a new filter with a new head and clear bottom bowl. I installed the filter but the engine still wouldn't start. again, it cranked just fine but would not start. Until today it stopped cranking all together. The starter motor does lift and try to move the wheel but it doesn't, it stutters. I know for a fact its not the battery. Did I burn the starter from trying to start it so many times? I have uploaded a video of what is happening. Thanks in advance for any help!

2013 09 15 18 06 01 896 - YouTube
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Old 16 September 2013, 15:55   #2
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try taking the plugs out and turn it over , see if it s any different
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Old 16 September 2013, 15:59   #3
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Originally Posted by ruiz2728 View Post
Hello all. I am so glad to have found this site. I recently bought a 10-foot RIB with 2001 F25TLRZ 4-stroke outboard. The boat was running great and one day it just shut off and never turned back on. It cranked just fine but did not start. After doing some inspecting I discovered that the fuel filter water separator was corroded so badly that it was causing leaks. I have since bought a new filter with a new head and clear bottom bowl. I installed the filter but the engine still wouldn't start. again, it cranked just fine but would not start. Until today it stopped cranking all together. The starter motor does lift and try to move the wheel but it doesn't, it stutters. I know for a fact its not the battery. Did I burn the starter from trying to start it so many times? I have uploaded a video of what is happening. Thanks in advance for any help!

2013 09 15 18 06 01 896 - YouTube
If say the battery is flat. How are you sure it's not? It's turning so its more likely not got power. Have you taken the plugs out? I'd start there if you had water coming in there is every chance there is water in the carbs. You may be lucky if you clean the plugs it will fire but I suspect if water has gone through you will need to clean the carbs and change the engine fuel filter
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Old 16 September 2013, 19:21   #4
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try taking the plugs out and turn it over , see if it s any different

I will try that and let you know what happens.
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Old 16 September 2013, 19:29   #5
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If say the battery is flat. How are you sure it's not? It's turning so its more likely not got power. Have you taken the plugs out? I'd start there if you had water coming in there is every chance there is water in the carbs. You may be lucky if you clean the plugs it will fire but I suspect if water has gone through you will need to clean the carbs and change the engine fuel filter
I know it's not the battery because I tried another fully charged battery and it behaved the same way. I have not tried turning it over with the plugs out. I will try that and get back to you. I already changed the fuel filter. If none else works I will remove and clean the carbs. Thanks.

My question is; why was it cranking so great and now all of a sudden it cranks like this. What changed? My only guess is i burned the starter?
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Old 16 September 2013, 19:31   #6
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why was it cranking so great and now all of a sudden it cranks like this. What changed? My only guess is i burned the starter?
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Old 16 September 2013, 23:45   #7
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don't clean the carbs yet , you need to get it turning , when you have taken the plugs out clean them and just check for water , if that looks good then try and remove starter motor , and test that in a vice with a block of wood or take it in to be tested, and check connections it seems like you don't have enough power or you loosing it somewhere
Good luck
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Old 17 September 2013, 04:02   #8
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Have you tried pull starting it?
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Old 17 September 2013, 09:41   #9
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Have you tried pull starting it?
No, I just learned that all yamahas with electric start have the emergency rope start option. Pretty neat. I'll definitely give a go today. Thanks
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Old 17 September 2013, 09:51   #10
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No, I just learned that all yamahas with electric start have the emergency rope start option. Pretty neat. I'll definitely give a go today. Thanks
Should at least allow you to find the potential 2 problems - 1 with the starter circuit , the other with the running of the engine.

Is there an isolator switch ? - worth checking for corrision ( and the cables leading to it) if there is as this is a common problem area.

Just noticed your location - my dad lives on Statia...its a small world !
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