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Joined: Feb 2006
Posts: 4,675
Likes: 164
SENIOR TECHNICIAN
I was dismantling this motor and found this cavity at the top of the engine under the magnetic flywheel. It is covered by a plate and gasket held on with two small bolts (removed). It has this steel mesh tucked in a cavity (visible in the photo).
Any idea what this is for? Very curious.

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IMG_20221207_001016_copy_960x542.jpg (53.48 KB, 40 downloads)

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!
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Joined: Jul 2018
Posts: 2,086
Likes: 80
SENIOR TECHNICIAN
PCV valve MF. idea is to let air but not oil out - doesnt always work that way on the cheap ohv motors haha

Joined: Feb 2006
Posts: 4,675
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SENIOR TECHNICIAN
Thanks for the fast response Tyler.
Do Hondas have this?


Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!
Joined: Jul 2018
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SENIOR TECHNICIAN
yep, definitely do. Also sport a better quality beige one way flap thats less prone to gumming up

Joined: Jan 2016
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SENIOR TECHNICIAN
MF all 4 stroke engines have the crank vent system, without it they would blow gaskets everywhere when the piston is on the downstroke the pressure has to go somewhere. On a 2 stroke this downstroke piston pressure is what pushes the fuel/air in the crankcase up above the piston through the transfer ports

Joined: Feb 2006
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SENIOR TECHNICIAN
Hi NormK and Tyler,

not such a surprise then, bog standard.
First time I've pulled off the upper flywheel from an OHV engine.


Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!

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