Jump to content
View in the app

A better way to browse. Learn more.
Yamaha Owners Club

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

vacuum questions

rednecktech
in Yamaha Workshop

Featured Replies

Posted

My question is about manifold vacuum on my triple 750. What is the factory vacuum settings when the bike was new. I only have 8200 miles on the bike but the carbs are from another 750.When I bought the bike I found that the needles had been screwed in so deep that the tips were broke off in the bottom of carbs.So I bought a parts bike with good carbs, and they have been reset to balance the vacuum. They are way off in balance,so I set the vacuum balance to 8inches of vacuum with a sync.tool. I'm thinking that it is to lean at this setting. It's a little slugish right at take off,but gets after it with a little more throttle. I don't know whether to go up or down with the vacuum. The bike is a 1978 Yamaha750 Special XS model. If anyone has the answer please pass it on ,thanks,Jim

  • Quote

    • Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.

    Guest
    Reply to this topic...
    Go to topic listing

    Configure browser push notifications
    Chrome (Android)
    1. Tap the lock icon next to the address bar.
    2. Tap Permissions → Notifications.
    3. Adjust your preference.
    Chrome (Desktop)
    1. Click the padlock icon in the address bar.
    2. Select Site settings.
    3. Find Notifications and adjust your preference.