original source: Hostel Shoppe's Owner's Manual Resource Archive In order to install a chainguard on a SWB Vision with the
new double-idler setup, there are some modifications that need to be made
to provide enough clearance for the forward idler assembly. This is
Hostel Shoppe's solution.
Disassemble the idler assembly and carefully cut the spacer to make two
spacers as follows: The shorter (outside) spacer
should be 19mm long and the longer (inside) spacer should be 27mm
long. Hint: There should be enough length to permit you to cut the spacers a
little long and then grind them down to make the ends perfectly square.
Reassemble the idler and re-install. Picture #2 shows
proper chain routing without the chainguard for clarity.
Next, remove the protective paper and install the chainguard loosely.
Adjust the chainguard to achieve about 1-2 cm clearance between the
chainguard and crankarm when the crankarm is positioned at about 9:00 (see
picture). Tighten the chainguard mounting bolts. Picture #3 shows the
chainguard with it's protective paper for visibility.
Bottom view of installed chainguard and idler. Note the clearance
between chainguard and idler and a suspension fork crown (i.e. - not
much). There is more clearance with a rigid fork.