Post by snowdrifter on Jan 18, 2011 11:17:43 GMT -5
The distance shown in picture one is 14mm for the 75 Elan single. The adjuster bar is a piece of flat stock about 6.4mm wide and about 50cm long that lays on top of the primary idler bearing, and you spread the secondary and lay the bar on the shaft of the secondary. So when you check this measurement, the secondary is actually open about 6.4mm. If you are within a mm either way, you're okay. If you are out more than that, you have to adjust, either by usings shims (maximun five) behind the drive pulley that fit on the crank end. Or you can use more or fewer chaincase shims.
Pulley distance is equally simple. The distance should be 43-45mm. The area measured is shown in picture two. Ignore the measurement shown in the picture, this is for a 75 TNT. I usually try and find something, like a big deep socket that is exactly 44mm diameter or length and pass it between the area shown. If pulley distance is off, loosen the chaincase clamps, and adjust the support bolt to get to the 44mm.
Don1t use the measurements on the photos, picture are just used for showing how to measure.
Hope this helps
