missing air filter / crumblely air filter

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usaemsc

I just bought a 1989 30 88-94. I was doing my first pm when I noticed there was no air filter in the canister, just the metal cone shaped strainer. A closer inspection showed a black soot in the canister the throat and mounting plate. I wiped down area and attempted to change filter with one the previous owner had on stock. This one was crumbly it very easily fell apart. I think maybe its dried out or used but have nothing to compare it to. Furthermore I don't know if the other filter was like this one and disintegrated cousins that soot or never put in. is there a cleaner I can spray in the throat,My plan is to get a new filter i'm just concerned on what happen.
 
Dec 3, 2003
2,101
Hunter Legend 37 Portsmouth, RI
Probably Ingested

The "cone-shaped" filter is actually termed a "noise-supressor". It probably disintegrated and was ingested in the engine. Most likely no damage was done and the pieces were burned up in the process of the fuel burning. Actually, in the future, the noise supressor can be cleaned with a mild detergent/water solution. I am not aware of any spray cleaner that can be used, but a call to Yanmar or http://www.marinedieseldirect.com won't hurt, either to get thier recommendation.
 
P

Paul I aboard "One Slip"

I had that Problem

I had a crumbled air filter when I first got my boat (H31, Yanmar 2GMF). About 1/3 of it had been eaten by the engine. Other than changing it I did nothing about it. No harm ever came of it that I know of. The filter is not available in the aftermarket and you will need to get one from a Yanmar partys dealer. One mechanic told me it is typical for users to change to a different, more common filter. He did not elaborate, and I never found anything else that fits. I would really like to though. If someone has experience with using other aftermarket filters, please, speak up.
 
Dec 23, 2003
268
Hunter H31 83-87 Captain's Cove Bridgeport, CT
usaemsc

Cone-shaped noise-supressor air filter Yanmar part # is 128270-12540 and costs about $22.00
 
Nov 10, 2004
68
Hunter Vision-32, Vision 32 Punta Gorda Isles, Fl
Marine mechanics

will tell you that you don't need an air filter on a boat. Yanmar makes the only replacements that I know of, and they are expensive, and will disintegrate over time. Too bad K&N doesn't make one.
 

Paul F

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Jun 3, 2004
827
Hunter 1980 - 33 Bradenton
Made one

Had the same problem with my Yanmar. I made a filter from vent filter material for house heat-a/c system. Seems to work fine. There isn't a lot of dirt in a boat application, unlike a car. But, it is important to protect the engine from dirt with the use of a filter.
 
Jul 20, 2005
2,422
Whitby 55 Kemah, Tx
Screw the boat mechanics

I used to be a diesel mechanic and I have to say that the dirtier the engine, the more wear it gets. Solution....go get a sponge type filter at the boat store for about $2 and soak it with oil. Also coat the inside of the canister with oil. The dirt in the air will stick to the oil. Take out the filter and canister and wash them and re-coat twice a year. Thanks for reminding me I have to clean mine :)
 
Dec 3, 2003
2,101
Hunter Legend 37 Portsmouth, RI
Get a filter!

The comment was that the diesel engine isn't the same as a car engine, but do remember, that there is always (and a lot of) belt dust in that environment.
 
R

rad

air filter

My local auto parts store has a filter that fits my YSM12 air canister perfectly. $17.00 for part #6270. This is for land vehicles, there was no listing for marine engines.
 

Sherry

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Jun 1, 2005
212
Hunter 30 Pickwick Lake, TN River
Ideal Marine Service

$15.56 last time I bought Yanmar filter from Ideal Marine.
 
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