Thrust, hp, and weight comparisons

[bobw]

That motor will have the “economizer linkage” and yes indeed, it needs to be adjusted properly.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[fleetwin]

Thanks, don’t have any books this old so wasn’t sure.  Perhaps someone could post a few pages of the manual that have pictures as well as words.  These adjustments are pretty tricky.

[bobw]

Here’s a couple pages out of the manual on the economizer or fuel saver linkage adjustment.   Hopefully, these will load up correctly.   This is out of the Johnson manual but Evinrude would be the same.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[Charles Myers]

Photos attached of the motor sides.

.

Good thought about the carburetor butterfly.  At WOT, both the carburetor butterfly and the throttle butterfly are completely open.

[Charles Myers]

Good thought about the carburetor butterfly.  We have run the engine on the lake without the engine cover and washout the air chamber.  Both the carburetor butterfly and the throttle butterfly are completely open at WOT.

Photo attached of the port side of the motor

[fleetwin]

OK, well contrary to what we thought, this engine does NOT have the trick economizer linkage I was referring to.  OK, the butterfly is opening fully, is the mag plate advancing fully, against its WOT stop?  There should be a raised boss on the block, on the stbd rear side that the mag plate rests against when fully advanced.

[Charles Myers]

Many apologies for being so delayed in answering.  My wife and I were travelling recently.

You asked whether on the starboard side of the motor the magneto is all the way forward to stop at a blocking spot when at full throttle.

It<u> is not</u> in such a position.  At present the very end of the magneto’s stop plate does get blocked (barely), but peeking under the mechanism, I can see that the stop plate has a large indent on it that I believe is supposed to be where the blocking should happen.  How to fix?  I have a theory; tell me if the following seems logical.

Peeking under the magneto, I believe the magneto is bolted down onto another plate (I don’t know its name).  That plate has lots of holes where the bolting could be made, including at least one slotted hole that I think, if used, would bring the big notch indent to about the right place to be blocked by the “boss.”

If that potential fix were done, I think the synchronization might better match what all the instructions say.

Unfortunately, to try that fix, the flywheel would have to be removed so that the magneto can be repositioned.  So far I have been unable to remove it.  I think I will have to try some heat to get the flywheel off.  Others have said that it sometimes is necessary.

A supporting clue.  Many years ago, after the boat sat unused while I was at college and in remote jobs, I set out to get it going again  —  probably around 1995.  At that time, I removed the motor and took it to a marine shop for a complete check over.  After that, when we got the boat back in the water, it did not run as fast as previously.  I can’t help being suspicious that the marine shop people installed the magneto in the wrong holes.

Any thoughts?

Thank you for your knowledgeable help.

[bobw]

Not sure if these will help you, but here’s some pics of my 1956 Johnson 30hp which should be similar to your Evinrude 30hp.   First pic shows the retainer ring that the magneto plate actually bolts to.    There are 4 screws that go through the magneto plate that screw into the retainer ring.   I think the plate you are referring to with the slotted holes is the support plate but the magneto doesn’t bolt to that.    The 2nd pic shows the magneto arm fully against the stop on the engine block with the throttle at wide open.   This pic also shows the adjusted position of the stop collar on the fuel saver rod.   I know Fleetwin said your motor doesn’t have the fuel saver or economizer linkage on it but I could swear I can see the linkage rod on your motor if I enlarge your picture of the port side of your motor.  It’s barely visible under the mag plate but it looks like it’s there.    Then again, I’m overdue at the eye doctor’s office…

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[Charles Myers]

Thank you for your good help.  I believe I have been looking in the wrong place for a stop.  I will do some more looking.

In your first photo, do I understand it right that the gold thing is the part that the magneto bolts onto?  If so, once I get the flywheel off and can inspect, how do I know whether the magneto has been bolted to the correct holes on the gold part?

My motor does have a throttle rod on the port side that links to the axis for the throttle butterfly.  My understand about synchronization so far has been that, once all of the other sync settings are done (including advanced to full throttle and in forward gear; engine off) , the last step is to position the collar on the throttle rod so that the throttle butterfly is held fully horizontal.  Any thoughts?

[fleetwin]

OK, well I don’t think his 56 30hp has the economizer linkage like the one shown in bob’s photos.  Could be wrong, just going by his pictures.

Charles, try to take some pictures of what you are trying to explain, don’t think I’m following you.

And yes, you want to avoid attempting to pull that flywheel if at all possible.

Nonetheless, the mag plate should be contacting that raised boss in the block if it is advancing fully, like shown in Bob’s second picture.

Please note that the engine needs to be in forward gear before the mag plate can advance fully, you may have to rotate the prop slightly to get the engine fully engaged into forward gear.

[Author]

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