105hp Outboard Spark Plug gap size?

[Faerbairn]

105hp Chrysler Outboard
Model 1057HF
Serial # 4770

I believe made somewhere between 1975 - 1977.

Can anyone please confirm the correct spark plug gap for my outboard? Is it .030?

Also, the firing order? Is it 1,3,2,4?

Thank you.

 

[Frank Acampora]

Re: 105hp Outboard Spark Plug gap size?

Do not use bent electrode plugs in that engine. The correct plug is a Champion UL18V or L20V. NGK BUH or BUHW.

These are surface gap plugs and there is no gap to set.

Use of a bent electrode plug may result in melting holes in the piston crowns.

I believe your firing order is correct at 1324.

 

[Faerbairn]

Re: 105hp Outboard Spark Plug gap size?

Thank you very much Frank!