Unless you have the matte finish fjr (my mistake in getting one), I only use pledge lemon furnish polish(or cheaper alternative) on everything windshield, and entire bike including helmet and visor, spray, wipe off only with a 100% cotton cloth or possibly microfiber. I never use water. I repeat do not use on a matte finish bike, except the windshield.
Unfortunately you did not specify if your bike had matte paint,. If your bike has matte paint, my friend on his goldwing f6b which has some matte black he sprays with water (I assume that is maybe what you have on your fjr). The leaf blower may be the suggestion I am looking for to avoid spotting on my matte paint fjr.