By taking the shocks off and then have somebody hold one or put it in a vice with a towel wrapped around it. Clamp it firmly but ensure no damage is caused to it. There should be a screw head on top of the shock. Take that out and drain the oil in a pan. When you take the seals off put them in order of removal and replace them in reverse order. Refill the shock with the right amount and weight of oil, you might have to gently press down on the shcok a few times then add more oil if needed. Put the screw back in, check for leaks, refit to the bike taking care to take all the screws to the right torque settings. Overtightening brake caliper, triple tree and axle bolts is very dangerous and can cause the bolts to fail in use.
From my under standing if your riding MOTO, with a fork oil level gauge you measure put 110 mm.
what is the fork level height for a 1995 CR 125 honda
120mm from the top
The type of fork oil and amount you would use for a Superbyke RMR 125 is semi-synthetic 4-stroke oil with an amount of up to 2 liters. Fork oil is used to lubricate both the engine and the gear boxes.
5o ml each leg fork.
174cc per leg
70-75ml ATF
140 mm
70-75ml ATF
castrol tts 40:10
750 ml per leg
for model 1996-2004 the oil capacity per fork is 477cc, or 82mm from the top of the fork tube when fully compressed (no spring inside)