Sat Jan 01, 2011 12:31 pm
• Admin | 317 Posts
This is done on an AJS Regal Raptor DD125 Eos, and should be similar on most AJS bikes.
First Remove the Chain Plate.
do this by Removing the four retaining screws located at the four corners of the plate (the middle screw holds in an acrylic block and doesn't need removing.)
once removed it should look like this
you will need to tie back the chain tensioner.
do this with a cable tie.
check the play on the chain, (mine was about 5 cm's from low to high points)
Undo the rear axle bolt with a 21mm socket
use 2 x 13mm spanners to adjust the chain adjusters.
hold the rear nut whilst loosening the front nut.
after loosening the front nut, adjust the chain on each side by counting equal turns of the back nut by counting the flat sides turned. make sure these are equal on each adjuster.
Check the chain tension as you go. it should be between 10-20mm from low to high points for a properly adjusted chain.
Tighten the adjuster nuts by holding the rear nut still, whilst tightening the front nut. ***IMPORTANT*** MAKE SURE THE REAR SPANNER DOES NOT MOVE WHILST TIGHTENING THE FRONT NUT, AS THIS WILL AFFECT THE TENSION OF THE CHAIN, AND MORE IMPORTANTLY, THE ALLIGNMENT OF THE WHEEL.
Re-tighten the rear axel bolt making sure that it is tight.
now remeber to snip the cable tie holding the chain tensioner.
and replace the Chain plate
chain adjustment is now done.
Whilst your there you may as well give the chain some tlc, with a quick clean with wd40 and then a good oiling/greasing.
wd40 is NOT a suitable chain lube, as it removes water from inside the chain and drys out the seals around the link, so only use it for cleaning the chain, and then regrease/ oil the chain properly.