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Lancer09

Boat Motor Question for Wrench

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Got a motor question for @fishinwrench or anyone who is able to answer.

Boat is a 15' 3" '88 Skeeter pushed by a 70 HP two stroke Tohatsu. About a week ago I was coming out of a creek and bumped something obviously with just the skeg of the motor or just the prop. Felt a small bump but didn't hit hard enough to kill the engine or anything. really seemed pretty minor as I was just idling. With lower water I probably would have seen what was out in the middle of the creek bed.
Ran around the small local lake for a few laps at full power, as I pulled back to the ramp i had to go in and out of gear and reverse several times to avoid some dingledicks that were swimming IN the boat ramp  from a jetski as I was approaching directly into the sun.

At one point when I went to put into gear (forward or reverse) I get power to the engine, but no push in either direction or  prop spin. I have checked the choke and the throttle cables, both appear to be in working condition. When I removed the prop  on the inside of it there is some rubber looking teeth that bite around a toothed shaft coming out from the lower unit.  Both the teeth on the inside of the prop and the shaft are intact with now issues. Was told that it could be a shear pin.

Removed the shaft to find a couple of gears, and a pin that came out of the center of a cylindrical piece of metal with gears that would translate power to the prop. When I pulled that shaft a substantial amount of oil/grease came out as well along with what looks like a pin of some sort (6-10 mm in diameter(rough guestimate), it was flat on one end and slightly rounded on the other. I believe it came out from inside the cylinder that is hollowed out? ) and a single ball bearing. Is the grease in this location indicative of an issue or is it supposed to be there and need to be replaced when the gear shaft is inserted back (I don't know if this is the name of it). 

Just trying to figure out where my problem lies in getting power to the motor, gas flowing, but unable to generate any power to the prop. I'll be taking it to a kid who works for me tomorrow that can take anything apart and fix it (does all of our city truck repair, has rebuilt a few ATV engines and does all our mower engine maintenance as  well. He has done some small time stuff and I'd like to start with him before i end up paying money at a marine shop if it is a simple fix, and I am just not mechanically inclined, as I would like to be able to fix this same issue in the future should it arise again.. Because let's be honest.. this boat and motor are older than I am.

 

Thanks in advance for any possible insight. If pictures are required just let me know and I can try to get the grease wiped off everything to try and get a picture.

 

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2 hours ago, Lancer09 said:

I wish I was mechanically inclined to know what that meant?

What would be the "hub."

Told ya I was dumb.

I'll let my good buddy, Stew from down under take you to Basic Propeller class. 

The discussion on "Hubs" begins at about 8:30....but watch the whole thing and get brought up to speed. 😉

Hit LIKE and SUBSCRIBE !   Stew will appreciate it.

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