9.9 throttle locked out in neutral and reverse

[Skooks]

I just bought an old (1970's vintage) merc 9.9 HP outboard. It is impossible to move the throttle unless the shift selector is in Forward. is this a design "feature" or is something Kaput?<br /><br />Thanks,<br /><br />Don

 

[JB]

Re: 9.9 throttle locked out in neutral and reverse

It was a design feature to prevent over-revving under no-load and light load conditions, Skooks.<br /><br />There may be an adjustable stop screw to adjust it to allow a little bit of throttle.<br /><br />Good luck.

 

[Skooks]

Re: 9.9 throttle locked out in neutral and reverse

Thanks! That's kinda what I thought. It still seems a bit goofy to me though.<br /><br />-Don

 

[JB]

Re: 9.9 throttle locked out in neutral and reverse

If you had blown up an engine by putting it into thermal runaway under no-load I think you would feel differently, Skooks.<br /><br />It's a plumb terrifying experience.