No. The 83 has a single front downtube and the 86 has a double downtube.
6.9:1
Santa Barbara - 1984 1-490 was released on: USA: 30 June 1986
The H&R topper model 490 JR was made from 1961-1983.I hope that you find this informative.
490 = 490
490
An object that weighs 490 N on earth has a mass of 50 kilograms. In other places (on the moon, in space, etc.), the same object would have the same mass but different weight.
90% of 490 = 90% * 490 = 0.9 * 490 = 441
25% of 490= 25% * 490= 0.25 * 490= 122.5
Step 1 Drain it Step 2 fill with 2 stroke oil
60% of 490= 60% * 490= 0.6 * 490= 29460% of 490.00 is 294.00
490
490% = 490/100 = 49/10