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General Category => General Discussion => Topic started by: sauldgold on September 18, 2018, 12:05:41 AM

Title: Gas cap gasket replacement
Post by: sauldgold on September 18, 2018, 12:05:41 AM

Hi all,

My gas cap gasket is shot. I bought what is supposed to be a replacement gasket for the 850t3 gas cap from Harper's, but the size is totally wrong. I checked on the Moto Guzzino website and they say there are two different sizes of gasket / caps for 70's bikes depending on the year, one being 70 mm and the other being 50mm.

PO installed tank and cap and I don't know if he mismatched parts from different years.  If anyone could clear this up for me, I would hugely appreciate it.


(https://thumb.ibb.co/fdM2ez/gascap_1.jpg) (https://ibb.co/fdM2ez) (https://thumb.ibb.co/ea5jsK/gascap_2.jpg) (https://ibb.co/ea5jsK) (https://thumb.ibb.co/ePThez/gascap_3.jpg) (https://ibb.co/ePThez) (https://thumb.ibb.co/fBXm6e/gascap_4.jpg) (https://ibb.co/fBXm6e) (https://thumb.ibb.co/mGjcCK/gasket_1.jpg) (https://ibb.co/mGjcCK) (https://thumb.ibb.co/fzGeRe/gasket_2.jpg) (https://ibb.co/fzGeRe) (https://thumb.ibb.co/k1xVXK/gasket_3.jpg) (https://ibb.co/k1xVXK)

Title: Re: Gas cap gasket replacement
Post by: guzzisteve on September 18, 2018, 09:15:28 AM

You got the measurement so go to the auto parts store and get one, you may have to buy a cap to get it. I did this over 30yrs ago w/no problem at all.

Title: Re: Gas cap gasket replacement
Post by: Antietam Classic Cycle on September 18, 2018, 09:42:50 AM

Buy a sheet of Viton and make your own. Or, there might be something of the correct size and other options here:
https://www.mcmaster.com/viton-fluoroelastomer

Title: Re: Gas cap gasket replacement
Post by: RinkRat II on September 18, 2018, 11:24:13 AM

   Does Harpers have the right one?
     
     Paul B :boozing: