15 HP Johnny has me stumped

[nightstalker]

Just put back together my 1977, 15 HP Johnny. After 100 pulls, she came to life but won't idle low enough to shift no matter how much I try to adjest the slow speed adjust. She only will idle with the throttle all the way open. If I close it a little to shift, she dies. The engine has a new thermostate, plugs, needle valve, gaskets, etc. Any idea what to look for next?<br />Stalker

 

[Xcusme]

Re: 15 HP Johnny has me stumped

Define "Just put back together". Did you do a powerhead rebuild?? Carb rebuild/clean?

 

[JB]

Re: 15 HP Johnny has me stumped

Yes. What did you do and why?<br /><br />When you did all that, did you do it by the book or by the seat of your britches?

 

[nightstalker]

Re: 15 HP Johnny has me stumped

No powerhead rebuild just the carb. Put it together as best I could by the book (shop manual). <br />Stalker

 

[JB]

Re: 15 HP Johnny has me stumped

Hmmmm. Hate to say this, but I think your carb is messed up (still? again?). Those tiny orifices in the carb throat often get overlooked or even plugged up worse during a carb cleaning/overhaul.<br /><br />Long shot that the timing is waaaay off. Did you do the link 'n' synch?<br /><br />Good luck.

 

[fireman57]

Re: 15 HP Johnny has me stumped

Check your flywheel key for slop or a shear. Just guessing.

 

[nightstalker]

Re: 15 HP Johnny has me stumped

When I get the time, I'll take it apart again and clean that carb again. I think I may have not given those little orifices the attention they needed. Thanks for the info.<br />Stalker