Front Air Pressure 11-17psi (80-120 kPa, 0.8-1.2 kg/cm)
Rear Air Pressure 0-70psi (0-500 kPa, 0-5.0 kg/cm)
per the 1982 Honda GL500 owners manual.
This should be 5-6 PSI. Try 5 PSI first.
135cc for 30mm forks
12.8oz
12 to 17 psi according to how stiff or soft you want them to be.
You have to drop one of the forks.
No, they are totally different
Use automatic transmission fluid (ATF)
it will explode
Honda has a tendency, just like most motorcycle manufacturers, to place the VIN in the area of the front forks, around where the forks "connect" to the body of the motorcycle.
Remove bolts at top of suspension forks. Raise front wheel off ground. Pour oil into top of front forks. Leave 100 mm or 10 cm measured from top of forks.
you can buy stiffer front shock springs for about90 bucks at procycle.com
On all Honda motorcycles, the data plate is on the neck tube of the front forks assy. My ATV has it facing the front of the bike. If you don't have the data plate, you have to talk to a Honda guru.