Where to set points?

[merkdawg0084]

Look at picture..Where is thickest part to set points? Thx

 

[GA_Boater]

What are you working on? I see no cam.

 

[merkdawg0084]

That is the cam lobe that goes over the crankshaft on a 1957 fd-11 18 hp Johnson.,

 

[flyingscott]

Right where it says top.

 

[merkdawg0084]

Ok flyingscott, would that be right at the O in top? Or there is what looks like an arrow right after the P? Thx

 

[F_R]

See this

 

[merkdawg0084]

F_R that is great!! Where did you find this? I’m saving it!!!

 

[merkdawg0084]

One more question? Do you set them with the throttle on fast or slow?

 

[racerone]

Does NOT MATTER--------Find some videos on YOU TUBE that explain this simple magneto for you.-----Learning how to set the points with a meter is easy.----It is the best way and takes out all the guess work.

 

[merkdawg0084]

Ok thx. Thought I saw somewhere on Leeroy’s Ramblings that it said to put throttle on fast. Sry

 

[racerone]

You are timing the opening of the points relative to the rotation of the magnets !----That is what produces the peak spark.---Always the same.------It is the rotation of the magneto plate that changes spark timing to piston travel in cylinder.------Think about / read about it / look at videos.----This thing is called a " MAGNETO " and it is very simple.

 

[merkdawg0084]

Thx. I always thought points were set when piston is at TDC .,,

 

[Vic.S]

Thx. I always thought points were set when piston is at TDC .,,

No you set points when the "wiper" is on the highest point of the cam, ie when the points are at their widest open. Its easy to see this point on a four lobed cam like we used to have in car distributors but not so easy to see on a cam like in this outboard, hence the marks to indicate the correct position

 

[oldboat1]

^^This. "top" refers to the topside of the cam when reassembling -- faces up.

 

[merkdawg0084]

Thank you Vic.S and yes oldboat1 top is for topside up,