1992 Johnson 15hp air silencer question

[svenr]

I recently pulled the air silencer off of my motor and
noticed a hole in the air silencer that doesn't look "stock". It appears the previous owner modified it,
however it appears to run pretty well as is.

The hole may be stock, if so it appeas to have been
enlarged (for better air flow I pressume). The hole in question is directly across from the stock hole for the
needle valve (mixture adjustment screw). So on the
opposite side of the air silencer. It does not appear in
any diagrams I have ever seen including this one (the
hole appears just to the right of #41 in the diagram)

http://www.ishopmarine.com/ishop/js...CatFilter=BMC&eCatSupFldr=supplier-100-005-EJ

Is there supposed to be a hole there, or as anyone
seen this modification before? Could it hurt
performance of the engine?

 

[DHPMARINE]

Re: 1992 Johnson 15hp air silencer question

? ? # 41 is a sealing gasket between the carb and the silencer.Is it for a pin that locates the silencer to the carb?

DHP

 

[svenr]

Re: 1992 Johnson 15hp air silencer question

Sorry. I meant the hole is literally to the right of the
# 41 in the diagram on the side of the air silencer
body. This hole is in addition to the hole on the front of
the air silencer that has the rubber grommet (part 35) in
it. In relation to that hole, the "extra hole" in my air silencer
is in the back of the air silencer body facing toward
the flywheel & throttle cam.

 

[svenr]

Re: 1992 Johnson 15hp air silencer question

I guess I should be more specific. The hole is about
the size of a nickel.