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Old 19-05-2022, 11:11   #1
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2 stroke 15 HP Yamaha throttle cable issue

2002 15 HP Yamaha 2 stroke.

This morning, took the dinghy ashore, everything fine. Started on the first pull, able to go full throttle.

Get back to the dinghy to return to the boat, and the throttle will only turn to 1/2. I pulled the cover, looked at the link age at the throttle, checked in the arm. I can't see what is preventing the throttle twist grip from turning all the way.
What can I look for?
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Old 19-05-2022, 12:24   #2
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Re: 2 stroke 15 HP Yamaha throttle cable issue

A twist handle that then pulls a cable is dependent on well greased wedges sliding by each other. That is one problem, and requires disassembly of the handle. Second is the cable itself. Guessing you have a few years on that motor, a frayed cable could be the source. A rusted cable with no oil is another. So, take it.apart. you will find the problem.
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Old 19-05-2022, 20:16   #3
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Re: 2 stroke 15 HP Yamaha throttle cable issue

Do a you tube search on the handle tear down. I saw a couple good ones.
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Old 20-05-2022, 13:01   #4
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Re: 2 stroke 15 HP Yamaha throttle cable issue

I found the issue. It only went to 1/2 throttle due to the mechanism that prevents full throttle when in neutral.
A part of the linkage connecting the gear selection to the throttle linkage came loose.
A search online provided the clue.

Then it was 45 minutes actually finding it on my engine, figuring out how it was supposed to connect, and then trying to get it back together when I could barely sort of reach it with a screwdriver and needle nose pliers.

But itís running again! And when I first lifted the cowling I found a loose nut laying inside that holds the fuel filter. So that was another plus.
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Old 21-05-2022, 07:03   #5
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Re: 2 stroke 15 HP Yamaha throttle cable issue

You go Doug, sounds like you're a sailor :-)
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Old 21-05-2022, 09:59   #6
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Re: 2 stroke 15 HP Yamaha throttle cable issue

Quote:
Originally Posted by raingolfer View Post
I found the issue. It only went to 1/2 throttle due to the mechanism that prevents full throttle when in neutral.
A part of the linkage connecting the gear selection to the throttle linkage came loose.
A search online provided the clue.

Then it was 45 minutes actually finding it on my engine, figuring out how it was supposed to connect, and then trying to get it back together when I could barely sort of reach it with a screwdriver and needle nose pliers.

But itís running again! And when I first lifted the cowling I found a loose nut laying inside that holds the fuel filter. So that was another plus.
A Win!!
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Old 21-05-2022, 19:21   #7
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Re: 2 stroke 15 HP Yamaha throttle cable issue

Congratulations. You'll be more ready to tackle similar problems in the future.
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