External zinc location lower unit DF70A Suzuki

[JeffJuneau]

Hi, I noticed a number of you own Macs with a DF70A. Mine is a 2009 DF70A. According to my Suzuki dealer the "A" version came out part way through 2009 as an upgrade to the DF70. I can't locate any external anode on the lower unit of that model. I see the external zink on the bottom of the transom bracket, and the two internal zinks are easy to locate in the block, but I have crawled all around the lower unit to no avail. The trim tab is black painted (not zink) and I don't see any sign of an external anode anywhere including the fin and cavitation plate. I checked the archives and didn't find it either, though there were lots of discussions about anodes. Thanks to anyone who could please point it's location out for me. Jeff

[adudinsk]

Looks like there are 3 anodes in the Cylinder Head
2 on the Inlet Manifold.
1 on the exhaust manifold
1 on the clamp bracket
1 on the gear case (trim tab anode)
The diagrams are here.
https://www <dot> brownspoint <dot> com/store/pc/suzuki/df70/01.asp
(not sure what your you said...)


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[JeffJuneau]

Thank you Adudinsk, Like I said, I have a DF70A, but the URL you sent is for a DF70. They are different engines and do not have anodes in all the same locations. For example, the DF70A does not have a gear box mounted zink. Production on the DF70 ended somewhere at the end of 2008 and early 2009. Then the DF70A looks like it was pretty much unchanged from my 2009 through about 2018. However, the Brownsfield url you sent is helpful, and I was able to pull up the schematic for the correct engine. It does have a single anode hidden under the intake screen, and nowhere else on the lower unit. That's why I couldn't see it. Maybe, someone who actually owns a DF70A can verify for me that is the only lower unit zink for the model series DF70A from 09 to 2018. This Mac group is sure helpful. Many Thanks, Jeff

[adudinsk]

Glad it was of "some" help at least.
I redid all my anodes this year.. including internal engine anodes.
Took me some time to locate one internal one too..


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[adudinsk]

I do have one question about your OB.. being its larger than the usual 50/60hp... are you able to completely lift it from the water? or does the skeg drag in the water?

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[JeffJuneau]

Hi Adudinsk, This iteration of the DF70A has an adjustable upper and lower limit on the hydraulic tilt. Right not it is set so it comes up to about 3cm from the back of the captains seat in my Mac 26M. Unfortunately, that hangs about 7cm of the fin and propeller gear housing in the water. Wish there was some easy way to adjust it to stay out of the water without my seat banging into it. Also, the engine weighs about 345 lbs, if it was a hundred pounds less it might clear the water most of the time. I had an E-tec 60 outboard on my last boat. It was a much smaller profile, and bet it could be raised out of the water completely on a Mac 26M. Jeff

[adudinsk]

Same issue here with my 75 merc.. but.. I am glad I have a larger engine..

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[Russ]

I don't know why they would change it that much with the "A" version.
I have the 2008 DF70 and this is where the anode is located.

I can adjust the upper limit on the tilt and when tilted up, the skeg skims the waterline or is just out depending on how loaded the boat is.

[JeffJuneau]

Hi Russ, As you can see, the bottom units of our respective DF70s; the "A" and non-A are pretty different. Yes, that white stuff in the background is 1 foot of snow. We have already had one dump and a couple of smaller snow falls. I think that part of the answer to the changes in the DF70s were from Suzuki's decision to build one single platform for the DF 70, 80 and 90 hp in 2009. I don't know how long the DF80A was available, but my crude understanding is that the DF70A is just a detuned (sorry if detuned is not the correct term) DF90, with maybe a different prop.