Reply To: 1958 18 hp jhonson

[JACQUES]

Normally at START the roller should just touch the cam at the small  bar.

Going full throttle,   the cam will swing out and fully open the throttle plate at the rear of the carb.

do   you have the manual… free download   just print locally or store on your PC/laptop

https://www.socalaomci.com/library/johnson_service_manual_10th_edition.pdf

 

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