'68' 20hp johnson

[modern_man_42]

While I wait for my manuel to arrive is there anyone who can help me with my carb. adjustment.<br />I have a 1968, model# FD-22M 20 hp Johnson outboard that was running well until.....I decided to make an on the fly adjustment... didnt work.<br /><br />Thank you,<br />Respectfully<br />Mike.

 

[DJ]

Re: '68' 20hp johnson

Turn the high and low speed jets in until they seat-gently.<br /><br />Back each out 1 1/2 turns and tune from there.

 

[modern_man_42]

Re: '68' 20hp johnson

Thanks for the info DJ. However there is but one adjustment on the carberator that I could find.On top.<br />I unbolted the carb. from the motor and dipped it. After inspecting all the parts.... needle valve, old cork float ect.I found no reason to reattach and give it a yank.I did take your advice and set the only adjustment I could find at 1 1/2 turns out.did start but still not running properly.Runs for a second or two then dies.Pulled flywheel and now inspecting points flywheel shear key and so on. Ive never tore down an outboard motor. Hope this is not my first.<br />Mike.

 

[Bass2ply]

Re: '68' 20hp johnson

Top adjustment is for the low-speed idle. Maybe it wasn't your adjustment in the beginning (coincidence?). Could be a clogged filter from a dirty tank, bad fuel pump, or even fuel line and/or bulb.

 

[modern_man_42]

Re: '68' 20hp johnson

Thank you for the info bass2ply.... As it turns out I pulled the filter and much to my dismay... a very clogged filter from what appeared to be years of rusty gas and trash... Also after attaching a clear fuel line to the carb I found out that my fuel pump wasnt working either... Perrys had one for 20.00 and I am, to say the least, back on the river... Thanks a bunch!<br />Respectfully,<br />Mike.