pullstring on my lawnmower locked up, how to fix?

[Twistid 5,000+ posts]

i just went out 10 minutes ago to mow my yard and the pullstring on my lawnmower locked up, i pulled it once and it almost turned on, go to pull it again and i almost yanked my arm out of socket , i've seen this happen before but i forgot how to fix it

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[Chevillac 5,000+ posts]

i forgot too

 

[project f-150 10+ year member]

take the flywheel cover off and then you have to take out the puller assembly and kind of re-build it depending on what came undone.