Clutch Dog High or Low Speed

[JohnWI]

1984 Ev. 70HP

So I've been reading up on some of these posts but I had an issue the other evening and it got too late for me to put time into experimenting before nightfall. From what I gather, most dog issues are apparent at higher speeds not, idle to mid speeds (at least not with some forewarning).

The other day I'm just getting back on the water after a pit stop and going through a notoriously narrow channel at SNW speed and I heard bad noises coming from my motor, like I was on rocks or the dog issues I've read about. I stopped, regrouped and relaunched. Made it out and just as I was starting to throttle up it banged one more time so I backed off. I don't have tach, but I was no where near higher RPMs.

Unfortunately, I then had a secondary issue about 5 minutes later (which I'll be needing to address in another post) that my temp horn went off shortly after that so I immediately shut down and broke out the MinnKota and went home for the night. I wish I would have decided to try her out again after it cooled to see if the "bang" was going to be recurrent.

 

[boobie]

Re: Clutch Dog High or Low Speed

A bad shift dog will show up at high speed or upon acceleration.

 

[Jlawsen]

Re: Clutch Dog High or Low Speed

It will sound a lot like shaking a hand full of rocks. It usually starts around 3500 RPM and can also be heard as one or two loud bangs on launch or shortly after. It's a weird one to trouble shoot for first timers because the noise telegraphs up and it sounds like its inside the motor.

 

[JohnWI]

Re: Clutch Dog High or Low Speed

A bad shift dog will show up at high speed or upon acceleration.

But how likely would it be after running OK that it happened at 1000-1500 RPMs NOT upon acceleration (the initial occurrence)? That's why I was thinking it was perhaps not the gearcase? When it banged that second time is when it seemed more likely (causing a baaaad feeling in my gut).

 

[jimmbo]

Re: Clutch Dog High or Low Speed

To me the clutch dog jumping always sounded like the motor was hitting small objects under the water and the motor would jump a bit forward and backward a bit like it was hitting something