help - won't start
 

SH won't start. Sat for years.
Will crank but won't kick over

So far I've:
-cleaned out carbs
-changed plugs
-new air filter
-drained fuel tank - fresh 93
-new battery

Any suggestions?

Have removed a spark plug to see if it's wet with fuel? Checked for spark.
Take the lid off the air box, lift the slides and spray some starting fluid into the carbs. Then try to start. If it fires and dies, its a fuel issue. If nothing, then most likely no spark.

Not starting
 

Think you are spot on I'd pull a plug and make sure I had spark. I'd then make sure that the fuel is even getting to the cylinders. Fuel here in the USA goes bad a soon as 3 months I mean it may go longer but then again it may not. If it's trying to start most likely the float jet is clear but the main jet may be partially blocked. Willing to bet it's carbs then again not willing to bet much.

Don't understand if you confirmed that there was spark or not. Did you try the starting fluid? Were the plugs wet?
Sitting for that long is almost certainly a carb/fuel problem.
Process of elimination.

Thank you all for the feedback.
Used starting fluid yesterday and she fired up!

I realized I forgot to pull out and clean the PILOT screws.... I've the carbs off now but one of the screws is frozen and won't come out.
I've rounded the pilot screw tool that came from Dynojet.... any other way to get this screw out.
I have it soaking in WD40 - hopefully it will penetrate by the time I get to this evening.

pulled the carbs out and cleaned the pilot screw...now the damn thing won't start even with starter fluid.

back to square one with spark?
what to do?

If you do get spark at the plugs, It's definitely the carbs.
Sounds to me like you may need more work on the carbs, Don't know if you did, but you have to get both flutes out and clear all the blocked holes on both, including the side holes, the smaller one is usually the culprit on starting, especially if the bike was sat for years.

Check the diagram from Ronayers bellow:
Most likely it's #38 for the small ideal flute that causing the problems.
The bigger flute #25 & #26 and the main jets that sits on the top #36 & #37 should be clean as well, but you may already did that, based on your description.
Another thing to check, if you don't have a sticky needle, it may hinder the fuel flow to the carb.

https://www.ronayers.com/oemparts/a/...omponent-parts

Hope that helps

Thank you for the feedbacks...I used the all balls carb rebuild kit and replaced all the jets and pilot screw the other day. Installed it back on and wouldn't start with starting fluid... Checked the rear for spark and it was good.
waiting now on the diaphragm boots and will replace them to see if that solves it...
Anything else I'm missing?
Here's the rear spark... thought it was ample

https://cimg5.ibsrv.net/gimg/www.sup...023f3cd283.jpg

Couple directions to go here. One I'd like to eliminate is the petcock. If you're not getting consistent fuel flow, rebuild that petcock.

You can pull the lines, apply suction manually and see if the fuel flows (catching it in a bottle/can).