lower mount cover

[DMCalamita]

I recently was going to pull my lower unit of my 115HP 2-stroke Yamaha to change my water pump impeller. After removing the 6 bolts, trim tab and the bolt under the trim tab section the unit still wouldn't drop. I removed the lower mount cover looking for a bolt when I learned it is spring loaded, now cant get the cover back on. What do I need to do to get the lower mount cover back on? Your help will be greatly appreciative.

[TownsendsFJR1300]

A year and model # would be helpful..


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[DennisG01]

I can't think of anything on the lower unit that is spring loaded... can you clarify or post a picture or maybe even the parts diagram for your motor?

Lowers sometimes get stuck (salt buildup) at where the driveshaft enters the crank - often, but not always, the reason is not dropping it on a regular basis and/or not using proper grease on the splines. You might need to get creative with wedges, hammering, etc.

[DMCalamita]

It's model #C115TLRY MFD 5/99 and right above the lower unit you have two lower mount covers one on each side

[DMCalamita]

[99yam40]

I am guessing this shows what you are talking about,(#27) but I do not know anything about putting it back together

[DMCalamita]

#27 is the cover I can't get back on. Thank you

[DMCalamita]

When I removed the screw like a dope, the cover sprang off. I tried to get it back on until I was tired of fighting with it.

[TownsendsFJR1300]

I'd take a guess the front (with one bolt being at the rear) of #27, may have a tab that has to be inserted first perhaps?

Then push in the rear and THEN insert the bolt.

Why there's a spring there, ??


Got this pic from E-bay, pic of your part (used). I strongly suspect that curved section,
at the very top pf the pic, slips over the engine area(with the spring), then install your bolt.


Capture.JPG
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[DMCalamita]

Yes sir I do believe that's how it goes, but it wasn't making it easy for me. Thank you for your help

[TownsendsFJR1300]

I'm guessing that spring is just to keep it from rattling with just one bolt holding the other end on...

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[DMCalamita]

I think when I tried to get the cover on the other day I didn't have both springs aligned where they were getting compressed, but yesterday I got it back on first try. I want to thank you all of you for your guidance that gave me the confidence to get it on with out taking it to a shop or breaking anything.

[99yam40]

good to hear you got that figured out,
but the big question now is did you get the lower unit off to do the pump service?

[DennisG01]

Glad to hear you got it back on. Weird about the spring, though - I mean, obviously it's some type of vibration dampening, but my bracket/cover does not use a spring, even though they're pretty much the same design overall. Gotta wonder why the difference, you know?