Does your motor have an air filter?

lugoismad · Feb 26, 2015

My 25HP 1985 Johnson doesn't have an air filter in front of the carb.

Is this normal?

I have a K&N Motorcycle air filter that would fit right over the front of my carb and work great.

The guy who sold me the boat and motor said filters aren't necessary on boats because there isn't as much dust and stuff to pickup. Sounds like BS to me though.

lovedr79 · Feb 26, 2015

marine motors usually dont. some have a flame arrestor screen. not need. usually not dusty out on the water.

lugoismad · Feb 26, 2015

lovedr79 said:
marine motors usually dont. some have a flame arrestor screen. not need. usually not dusty out on the water.

Huh, ok. Now I know.

ccarver · Feb 26, 2015

Cool I was wondering the same thing

Captain Ahab · Feb 26, 2015

No need try not to run the boat on dusty roads lol

akbejeepin · Feb 26, 2015

Typically it's not dusty on the water. However, in Alabama during the spring, the pollen can be so thick at times it would rival any dusty dirt road. Obviously that is a little exaggerated but the motor has to pull a bunch in when it is running.

If there was a way to add a filter to my tohatsu I would just because.

felicityhu · Jul 21, 2021

Yes, my car has one, I have to change it every month.

turbotodd · Jul 21, 2021

Ain't never seen a traditional outboard that had an air filter. But I wish they did. If nothing else but to keep the dirt dobber nests from getting into the engine when they break free of the block, flywheel, whatever.

Pappy · Jul 21, 2021

Todd -
Start using the Boeshield T9 on the powerhead. We are in Mud Dauber central down here and have been using it on customer engines for over a decade now. They cannot build a next on a slippery surface. Most customers only get it applied when they come in for yearly service and no mud daubers!!
The stuff is not thick and gooey like some of the preservatives.

Does your motor have an air filter?

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