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1957 Ranger IV, Evinrude 30hp Lark 02 Sep 2022 22:53 #122270

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Vintin after looking at your picture it appears the index cast on case looks like it was staring me right in face.. their lined up in my picture but cam follower isn’t even touching cam now and isn’t bottomed out at idle. It lines up at around 1/2 throttle. If I were to adjust cam it would be tight to mag plate to meet lowest speed (idle) going to fool around with but thought I’d post invade I miss you
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1957 Ranger IV, Evinrude 30hp Lark 02 Sep 2022 22:35 #122269

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Vintin thx and np I get everyone has their own stuff to do appreciate the time. So that adjustment screw is tight but doable and that’s what I thought Ray was referring too in earlier question to me. So I lined up cam follower to brass cam to just crack throttle as it hits mark.. it was out considerably (3/4”). And thought I had it until you mentioned the index cast on crank case.. 

so now I will find index cast mark, line up brass cam too it.. then see where cam follower is set. If cam follower needs to be moved I do think I can adjust on throttle linkage set screw.. but don’t quote me on that.

then I’m going to try make woodruff key to fit as parts store was useful as they always are to me and had nothing.

I’ll update you after my findings. Don’t feel obligated but I will keep asking questions.
 
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1957 Ranger IV, Evinrude 30hp Lark 02 Sep 2022 22:19 #122268

So lining brass cam up with blocks mystery mark  is the key to start(should this be at idle position on tiller linkage side) with then after adjusting wheel linkage to it?



Instead of adjustable linkages which your motor probably does not have, the brass cam loosens and is moved until the butterfly in the carb just starts to open as the marks like up. 
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1957 Ranger IV, Evinrude 30hp Lark 02 Sep 2022 21:50 #122267

So lining brass cam up with blocks mystery mark  is the key to start(should this be at idle position on tiller linkage side) with then after adjusting wheel linkage to it?


The line on the brass plate (cam) needs to be lined up with the boss on the block. You do that by advancing the throttle. Once lined up you adjust the linkages so that the throttle plate in the throat of the carb just begins to open. I've never worked on a 30 hp 1956 and I see that the brass plate (cam) gets adjusted in or out instead of adjusting carb linkages like it is on the 1957 35 hp motor that I am familiar with. So on your 30 hp motor tiny machine screws get loosedned up and the cam get moved.Those screws may be hard to see as they go into the under side of the mag plate. It's coming back to me now, LOL!

I will be outside for a couple of hours but will be back this evening. Boatboy was an early mentor of mine on these old motors and he's probably forgot more than I'll ever know. 

 
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Last edit: by VinTin.

1957 Ranger IV, Evinrude 30hp Lark 02 Sep 2022 21:44 #122266

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So lining brass cam up with blocks mystery mark  is the key to start(should this be at idle position on tiller linkage side) with then after adjusting wheel linkage to it?
1957 Ranger IV
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1957 Ranger IV, Evinrude 30hp Lark 02 Sep 2022 21:24 #122265

Ignore the roller for the moment. As the throttle is advance the mark on the brass fixture moves because the throttle moves the mag plate advancing timing. The brass cam then moves the throttle plate in the carb throat using the linkages that are attached to the roller. The linkages are adjustable for the very purpose of syncronizing the opening of the throttle plate as the ignition timing advances.
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1957 Ranger IV, Evinrude 30hp Lark 02 Sep 2022 21:18 #122264

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Ok sounds good it was greased prior and didn’t clean.. will do.
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1957 Ranger IV, Evinrude 30hp Lark 02 Sep 2022 21:16 #122263

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Ok on timing tool hash marks, thx

as for line on brass it’s very visual I popped of mag plate do not see mark on block.. what’s confusing to me is if wheel is to line up with mark on brass throttle cam how is it they can be lined up with each other? For example if wheel it stationary and mark on block cannot move being stationary they would both have to line up meaning the only thing that moves is brass cam if I’m interpreting that correctly? Wheel moves but not side to side just top to bottom or in a vertical fashion.
I believe wheel should be Center of line on brass cam when throttle linkage starts to move right?
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Last edit: by cballer.

1957 Ranger IV, Evinrude 30hp Lark 02 Sep 2022 21:13 #122262

Ok fly wheel I cleaned up good, it’s certainly not the one that came with it as this one has teeth for generator not starting till following year in 57’.
I see no cracks but that doesn’t mean there isn’t any. What you said makes sense if may not show until it’s pushed on by nut.. hmm
unfortunately no not a huge pop but it was fairly greased..
horrible news but may just explain everything?

 


The flywheel and crankshaft tapers should not be greased but instead should be as clean as possible maybe even using acetone as a cleaner.
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1957 Ranger IV, Evinrude 30hp Lark 02 Sep 2022 21:10 #122261

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Ok fly wheel I cleaned up good, it’s certainly not the one that came with it as this one has teeth for generator not starting till following year in 57’.
I see no cracks but that doesn’t mean there isn’t any. What you said makes sense if may not show until it’s pushed on by nut.. hmm
unfortunately no not a huge pop but it was fairly greased..
horrible news but may just explain everything?
 
1957 Ranger IV
Love the Feathercraft!!


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others just want to know what time it is.

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