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daytona gas cap

Started by motulman, March 01, 2021, 10:55:05 PM

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motulman

what is the fiberous thick gasket or diaphragm in the gas cap? how does this vent with that in there? anybody got a gas cap all torn apart that i can see pics of?

motulman

LOL  dont all jump at once.  have you checked your tank vent lately??

SoCal250

Nope haven't checked or had it apart on my Daytona. Should I?
I do have my 125 cap apart currently on my workbench though.
75 Yamaha RD125B   75 Yamaha RD125B (project)
75 Yamaha RD250B   75 Yamaha RD200B (project)
73 Yamaha RD350     77 Yamaha RD400D   79 Yamaha RD400F  
91 Yamaha TZR250R  89 Yamaha FZR400   05 Yamaha FZ6   
05 Yamaha XT225TC  82 Honda MB5  02 Aprilia RS250 Cup (sold)

motulman

that fibrous gasket or diaphragm must have a hole in it, mine was so plugged it looked like it wasnt even there but i found out where its supposed to be from steve turner and sure enough plugged with a solid rust plug geeze now maybe it will vent

SoCal250

Quote from: motulman on March 05, 2021, 05:24:41 PM
that fibrous gasket or diaphragm must have a hole in it, mine was so plugged it looked like it wasnt even there but i found out where its supposed to be from steve turner and sure enough plugged with a solid rust plug geeze now maybe it will vent

Hmm, good to know. I'll have to take a look at mine. It's never been checked in the ~15 years I've had the bike. Actually I have the tank off currently to flush out the inside and rebuild the petock, so it's a good time.
75 Yamaha RD125B   75 Yamaha RD125B (project)
75 Yamaha RD250B   75 Yamaha RD200B (project)
73 Yamaha RD350     77 Yamaha RD400D   79 Yamaha RD400F  
91 Yamaha TZR250R  89 Yamaha FZR400   05 Yamaha FZ6   
05 Yamaha XT225TC  82 Honda MB5  02 Aprilia RS250 Cup (sold)

motulman

hi russ, there is also a few pin holes in the metal parts of the cap that you must make sure are clear also. but in my case it didnt matter with that fiber gasket plugged up