Timing plate adjustment - 84 Johnson 15hp

[bugboy]

hi,

new to site, new to boat ownership.

I bought a 15hp Johnson. it idles well but there is considerable slop in the throttle and when it is placed in the start position, the timing plate synchronization setting is several inches to the left of the wheel that moves along it and opens up the butterfly plate in the carb.

Clearly, it is out of sync. When the throttle is opened fully, I'm only getting half way along the timing plate.

How do i re-synchronize the plate? Any pointers on good sites or documents to reference to do this work?

 

[ezeke]

Re: Timing plate adjustment - 84 Johnson 15hp

Use LeeRoy Wisner's on-line manual while you wait for your factory service manual to arrive. You can print it out or use IE's find to search. When you reach the page, scroll to the bottom for the list of topics:

http://www.wisnersinc.com/Fishing Information/Fishinginfo_main.html

 

[bugboy]

Re: Timing plate adjustment - 84 Johnson 15hp

thanks. i've got the cd version coming and will print out the appropriate portions of the manual.

do you have experience adjusting the plate on these motors...?

 

[ezeke]

Re: Timing plate adjustment - 84 Johnson 15hp

I usually fix them after someone else does. The factory service manual for your motor is not on CD.

Most of the throttle/timing problems on the 15 are because someone turned the tiller handle with the arm raised (as described by Mr. Wisner).