I THINK you can re-use them on this motor on original injector if you put it back in right away, can't leave out for long...and you don't want to use old o-ring on new injector.
i took my injectors off and on 3 or 4 times in 1 month when i was having problems ant used the old orings without a problem. yamaha 4 stroke 2006 150 hp
