Author Topic: 350 petcock positions?  (Read 742 times)

0 Members and 1 Guest are viewing this topic.

Offline Stoneman

  • Trade Count: (0)
  • Full Bridgestone Member
  • ***
  • Posts: 50
350 petcock positions?
« on: April 14, 2022, 11:39:16 AM »
Regarding an early ‘67 350 model, what are the lever positions (1 or2), for full vs reserve fuel in tank? My gasket behind the lever is in poor condition and won’t allow a simple test.  Thanks. And does anyone know where to get a new gasket, or a good way to make one?

Offline moonpup

  • Laidback Purist
  • Trade Count: (0)
  • Master Registered Bridgestone Member
  • *****
  • Posts: 2264
Re: 350 petcock positions?
« Reply #1 on: April 14, 2022, 01:55:42 PM »
Hi Steve,  the positions are as follows...
O - Off
1 - On
2 - Reserve
Also, Richard has seal kits for these on Ebay.
Confucius say... "Better to have Bridgestone than Kidneystone"

Offline Stoneman

  • Trade Count: (0)
  • Full Bridgestone Member
  • ***
  • Posts: 50
Re: 350 petcock positions?
« Reply #2 on: April 15, 2022, 11:30:30 AM »
Thanks, Moonpup!

I’ll try Richard after I finish my experiment with a hack to the gasket. Got the idea on an older thread on the forum. I’ve used a wine bottle cork, the kind that uses small bits of ground up cork that’s molded to shape and held together with some type of glue. I first sliced off a few thin pieces, punched a few holes in them then soaked them in gasoline for 24 hours. They held together fine, and swelled a bit as you might expect.

Then I removed the petcock lever, spring washer and old gasket. Next, I cut a slice of cork as close to the same thickness of the original gasket as possible, using a sharp knife. Checking the cork diameter, found to my delight it was perfect!  So, I then pressed the cork in position to hopefully make an impression of where the holes needed to be punched. Worked perfectly. Lastly, used a hole punch to make the holes.

Reassembled the petcock lever, added some gas to the tank to test. No leak in off position, no leak in on position, slight leak in reserve. I’ve let it all set overnight to gibe the cork time to swell, hoping the swelling will cure the slight leak on reserve. Will report back when I test again later today.

Offline Stoneman

  • Trade Count: (0)
  • Full Bridgestone Member
  • ***
  • Posts: 50
Re: 350 petcock positions?
« Reply #3 on: April 15, 2022, 03:26:54 PM »
UPDATE:  The cork gasket continued having a slight leak from the face of the lever position changer. My guess is the gasket  was just a bit too thin to properly seal things up when the lever was in the reserve position. So I made another gasket that was slightly thicker, about 1/8” but not more than 3/16”.  The gasket making only takes about 10 minutes. The second gasket is working like a charm with no external leaks and no gas exits the the petcock internally when in the off position. Just have to wait and see how long it will last. My guess is a couple years, at least.

 


Gallery


Views:220
Comments (0)
By: Jon West

Views:1362
Comments (0)
By: rwgibbon

Views:1690
Comments (0)
By: Perry L Anderson

Views:1757
Comments (0)
By: Perry L Anderson

Classifieds

Gto
Date: 03/02/2024 06:49 am
Time Left:
Looking for a BS90 used or new luggage Carrier assembly

Date: 02/01/2024 04:19 pm
Time Left:
Gto
Date: 10/19/2023 01:08 pm
Time Left:
Urgent - l/end roller bearing & piston pins needed
Date: 10/08/2023 03:25 am
Time Left:

Recent Downloads added

Chibi, Chibi Deluxe, Tora Service Manual
Rating: (None)
Filesize: 20383.27KB
Date: May 01, 2023, 08:35:39 PM
Chibi_Tora_Parts_Manual
Rating: (None)
Filesize: 14301.44KB
Date: May 01, 2023, 08:25:53 PM
BS200 Mk II RS & MK II SS Exclusive Parts
Rating: (None)
Filesize: 358.29KB
Date: March 07, 2021, 07:30:10 PM
1970 sales brochure
Rating: *****
Filesize: 6753.33KB
Date: July 16, 2020, 10:01:18 PM

Powered by EzPortal