On Monday, 15 April 2019 22:44:04 UTC+1, Jacob Butler wrote:
replying to normanwisdom, Jacob Butler wrote:

1 Take off belt cover and two small covers from top, one over the
switch/handle the other at the other end over the brushes.
2 This reveals four bolts which hold the complete bottom assembly to the top.
Separate them.
3 Put them back together with a bit of a wiggle to get the belt over the two
splined pulleys.

Yep, he's been reading this newsgroup 13 years waiting for someone to answer. Get yourself to google groups instead of using that awful website.