i love my pull start,i only had a little piece of wire break inside,took me 5 mins to fix for free using a pair of pliers to rebend the wire and put back on,now it works perfect. the rope never broke.
my engine starts on the first pull (i prime twice first). or i could peddal 10 feet,drop the clutch and it would start too.
Dont forget if you add a pullstart it will require more clearance for the peddals.