Humminbird 581i inline Fuse question

I left my manual at the house and I need install an inline fuse today. I looked at the online manual and I didnt see it. What amp fuse does it recommend? Any help would be appreciated!

Thanks,
JTL

Not sure on Humminbird, but I wouldn't go any higher than 3 amp, until i found out. Lowrance is pretty much 3 amp, so Humminbird should be close

Thanks Steve. I picked up some 3 amps. I believe Humminbird is 4 amp just cant remember for sure.

Its a 3Amp for the 581i as well.

Thanks Greg!