If you look at your shocks, you'll notice some numbers from 1-4. You are able to adjust the level of stiffness based on where these numbers are positioned and how much air you have in them. Here's a link to some info in the archives:
Front fork tubes are usable with air pressure from 0 - 7.1 psi.
Rear shocks have 4 position adjustment for hydralic damping effect (shock extension).
1 is softest, 4 is hardest.
Factory setting is 2. Adjust to personal preference to accommodate rider weight and riding conditions.
Springs resist compression of shocks. Air pressure assists and is adjustable.
Usable pressure in rear shock is 0 -41 psi.
Max. pressure is 71 psi before seals blow out.
Max weight to be carried on the vn750 is 397 lb, riders and luggage.
Clymer manual suggests atmospheric pressure (zero psi) for rear shock for a 150 lb rider.
General consensus on this board is 10% psi of weight carried, or 15 psi for a 150 lb rider.
I weigh over 300 lb ready to ride, and carry probably 50 lb of luggage and tools on my daily commute.
My dampers are set at 4, and air pressure close to max at 35-40 psi.
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