Air filter on Yanmar 4JH3E

[wayneA]

Hi

Anyone know if the Yanmar 4JH3E should have an air filter element?

The engine has a metal cylinder with 'air spout' connected to the air intake but no filter element inside. This is how it was supplied new from Yanmar and the dealer who installed the engine never added anything.

This seems a little weird to me - I now feel that it should have some type of air filter element and someone forgot to install one from new and this has remained the norm? The manual/handbook I have is next to useless!

TIA

Wayne

 

[john_morris_uk]

I don't know if its any help, but the Yanmar 1GM10 I installed on a previous boat a few years ago didn't have anything in the 'aircleaner' either. It was just an empty casing and I suppose it muffled the induction noise a little...

 

[wayneA]

Thanks John - maybe its not supposed to then and as you say just act as a muffler.

Thanks again

Wayne

 

[duncan]

4lha has an external wrap round foam element that is washed out in petrol from time to time and designed to prevent large particles being sucked through but no internal one

 

[djc]

I have a Yanmar 4JH2E which only has a metal fixed ring inside with very large dia holes in it ,no filter element at all. I think this to be a poor idea, checked with yanmar who confirmed, no air filter, so i have j-clipped a piece of stainless steel gorse over the end of the air in take just in case.
Also noticed no engine anodes on the sea water cooling system also seems odd, prob just use's main anode i guess.

 

[Spuddy]

I got an engine anode in my old 1GM. Worth checking again to see if yours is tucked away somewhere. The yanmarhelp site could give you a pointer.

 

[MarkG]

I have a 4JH3E and the Yanmar dealer assured there is no airfilter other than the box on the end of the inlet manifold.
Guess they think its not actually that dusty out at sea...

 

[wayneA]

Thanks to all who replied

Many Thanks to all who replied - much appreciated. Think it best to leave it as it is, considering others have same.

Cheers

Wayne