flush muffs

[mark.aa]

which flush muffs should i use on a 60hp vro single inlet or twin?or will it not matter.how long can you run engine on them to flush?<br />stupid question but this is my first boat after having jetskis

 

[OBJ]

Re: flush muffs

Either/Or will work Mark. Just remember, the muffs are used for idle operation only. No revving above 2k rpm.