Did i just destroy my NEW (to me) motor?

[Xcusme]

One more thing....check the coils....that they are NOT too closely mounted to the flywheel. The ends appear to have been mounted too close to the flywheel and later changed....or they are both mounted too close. They should be mounted so that the base mounting be flush with the metal base.

 

[Robert Ellis]

Nice going! A bit dissatisfying to not exactly what was wrong but hey ... it's going. If it were me, I'd tune as best I could then fill my tank and give it a good long run ... change the speed up a fair bit ... put it in reverse a few times .... put it through it's paces so to speak.
If you're concerned about being stranded - just do long circles. I think running a few gallons of fresh gas/oil mix through those carbs would be a very good thing ... Enjoy!

 

[Average_azn]

Thanks for the help everyone! So by now I've done quite a few things to this motor, Carb kit, fuel pump, new fuel lines plugs etc.
But it is still the most stubborn cold starter. So much so that i have to get it warmed up in a bucket for 30 mins before going out or it'll take all day to start out on the water! It fires a few times and then quits and eventually it will finally start (Choke out) then choke in and it dies immediately. Once started however, it idles really nicely (I tuned the low speed jet for hours one day). Once warm it'll start within 2 pulls reliably.

The final symptom is it struggles to transition from lowspeed idle to high speed. It coughs and sometimes dies if you transition too quickly, or sometimes too slowly!

Its so frustrating because I just want it to start reliably. If you read through this thread, It has compression, fuel and spark! Any ideas on why its so hard to cold start?

Thanks for your help guys!

 

[F_R]

Carburetor not properly synchronized with the spark advance. Or you aren't putting the throttle in the true "Start" position. Take a look at the throttle arm on the carburetor. It should just barely begin to move when aligned with the mark on the brass cam that pushes it open. That is the Synchronization.

Next watch that arm as you slowly turn the twist grip toward "Fast". When the carburetor arm is just slightly open, THAT is the "Start" position, no matter what it says on the dial plate (They are almost always wrong). Note it for future reference.

 

[Average_azn]

Can you explain more about the carburetor not being synced? I'm fairly certain i'm in the proper start position because I did a link and sync as described in the repair manual. The two lines on the plate just start to move the white wheel when its in start.