F9.9 with bad kickback on starting

[Stuatsea]

I have a Yamaha F9.9 2021 that has a habit of kicking back if not pulled very firmly. Always starts if pulled hard enough.
Here are my assumptions but looking for a cure.
Assume the kickback is a cylinder firing just before Tdc, when pulled slowly, and that the CDI unit delays the spark timing from the signal from the pulse coil. So on starting, the CDI is only just being powered up and not delaying the spark enough.
So is my assumption correct and if so what can I do to fix it.
Power the CDI before starting somehow, move the pulse sender, delay 1st spark. Somehow. Or am I barking up the wrong tree.

 

[racerone]

Best to have a shop have a look at it.

 

[Stuatsea]

Best to have a shop have a look at it.

Not here in Costa Rica, I have changed Ignition coil, CDI, charge coil , rebuilt Carb, it's working, runs perfect just a struggle for my wife to start without risk of injury.

 

[racerone]

Electric start kit for her birthday.----Know of a dealer that recommended electric start for all customers.

 

[Stuatsea]

Electric start kit for her birthday.----Know of a dealer that recommended electric start for all customers.

Haven't found the add on kit yet. Electric drill adaptor would be clever, or even better "Stihl "chainsaws have a easystart, the pull chord winds up a spring that releases and turns over the motor. Genius.

 

[racerone]

Those wind-up starters were used by Briggs & Stratton and Tecumseh lawn mower engines over 50 years ago.-----A bigger version was used by German tanks during World War II as far as I know.