Re: 1964 Johnson 90HP Engine Timing

[frankr]

Timing instructions are same as previously posted by Garry. Carburetor/distributor sync is also essentially the same except for the location of the throttle cam on top of the 4 bbl carburetor.

BTW, avoid taking that carburetor apart unless it is really necessary. Gaskets are complex and hard to get, and $$$. Float levels require a special tool (or complex measurements). Pull the hex plugs from the bottoms of the float bowls and look for signs of gum or varnish—reason to take it apart and clean. If nice and bright clean, try it before getting more involved. Just my 2c.