Originally Posted by Kenreesesr
Thanks for all the responses. Joining this forum has been incredible. Almost as good as the Vmax itself. I've gained much knowledge from this forum. I hope I can return the favor. I'm currently working with Pit Bull on a set of stands for the 1st Gen Vmax. The custom rear stand is on its way to me, and I'm sending the required dimensions for the rear stand to Pit Bull. They have been great to work with. I'll post pictures once I receive both stands.
Who needs a stand for the Vmax? Even if your centerstand tabs were cut off for an exhaust a run of the mill ATV lift (two pad lift) works perfectly and lifts both wheels off the ground. You can get them at Harbor Freight for like $50 if you catch them on sale.
Anyway in a nutshell....
1. Remove the two "H" covers off the manifolds. Two philips screws on each.
2. Remove the three rubber covers from the nipples. The left/front one has a line that runs to the vacuum advance (boost sensor). Just pull it off.
3. Hook up your carb sync tool to the four nipples.
4. Start the engine and let it warm up until you have a steady 1000RPM idle.
5. Adjust the flathead screw on the left side of the bike, between the two carbs, until carbs 1/2 are balanced in vacuum to each other. Blip the throttle after each adjustment. Make small movements, like 1/8 turn at a time.
6. Adjust the rear
screw on the right side until 3/4 are matched, or nearly so.
7. Once 1/2 and 3/4 pairs are in tune, use the front
right screw to balance the left pair to the right pair. Again, blip the throttle after each adjustment.
8. Remove gauge lines, reinstall covers/sensor line, and reinstall the H covers.
Once you've done it once or twice it takes around 10 minutes start to finish, and 5 of that is warming up the engine.
The best I could ever do was get all four within 1 inHg of each other, and for me they all hovered between 6 and 7 inHg vacuum at idle.