How to Store Your Top
Reference
Transcribed from The Complete Official MGB 1975 – 1977: Robert Bentley, Inc.:
Cambridge , Massachusetts : pp. 14 – 15.
Figures and text copyright British Leyland Motor Corp., 1975 – 1977
The Brit’s never did quite get the hang of making a convertible top that is easy to lower and raise. Folks who own a Fiat or Volkswagen (or virtually anything else built outside the United Kingdom) who can simply flip two toggles and throw the top back don't know how fortunate they are. Proceeding under the assumption that lowering the top on an LBC is just as easy but can produce disastrous results.
I've seen people employ countless methods of lowering an MGB hood, but I remain convinced that the hood-lowering method described in the owner's manual is the best. What follows is transcribed exactly from the driver's handbook as reprinted in the Bentley MGB repair manual, with occasional personal annotations. Since the images here are integral to the instructions, they're "clickable" so you can download them to your own machine
So far, this information applies only to the post-1970 Michelotti folding hood .
Lowering the hood
It is most important that the instructions for raising, lowering and folding the hood are followed. Do not fold when the hood is wet or damp.
CAUTION: Always ensure that the rear window is zipped in position before attempting to lower the hood.
Figure 1 
Unclip the sun visors (1) and move them to one side. [ Note 1]
Release both windscreen frame toggle catches (2).
Release the two fasteners (3) on the windscreen rails, the two fasteners (4) on the cant rails and the two fasteners (5) on the hood mounting brackets.
Figure 2 
Release the four fasteners from each rear quarter panel (6) and pull the hood slightly forward to disengage the hook (7) from the socket (8) on the body side panel.
Move the seat tilt catch forward and incline the seat backs towards the front of the car [ Note 2 ]
Figure 3 
Raise the hood header rail (11) until it is poised approximately midway over the door aperture.
Disengage the hood rear rail from the anchor plates (9) on the tonneau panel.
Fold each quarter-light (10) on the back-light and continue the fold in the material forward to the header rail (11). ENSURE THE FOLD IS MADE IN THE HOOD MATERIAL BETWEEN THE QUARTER-LIGHT AND THE BACK-LIGHT. FAILURE TO DO THIS MAY CAUSE PERMANENT DAMAGE TO THE BACK-LIGHT MATERIAL. [ Note 4 ]
Push the header rail (11) rearwards, and at the same time draw the back-light and hood material (12) out over the luggage compartment lid ensuring that the hood material does not become trapped between the hood sticks.
Figure 4 
· Fully lower the hood. Fold the two windscreen frame toggle catches (13) rearwards to prevent them from damaging the back-light.
Roll the rear window and hood material forward over the folded hood. [ Note 5 ] Position and secure the two retaining straps (14) [ Note 6 ]
Replace the sun visors and return the seat back-rests to their original positions.
Fit the hood cover or tonneau cover.
Notes
1. The pivoting of the sun visor identifies the car in the figure as a pre - 1977 model.
2. Titling the seats is really necessary if you have them rather far back on the rails.
3. The bar running in front of the folded top is the tonneau bow, which is fitted before the half -tonneau. If you didn’t recognise it, you don’t have one – probably lost by the previous owner. It’s not a terribly important piece.
4. The emphasis here is not my own, but it would have been. The use of bold caps gives only the slightest hint of the importance.
5. Many folks like to lay a clean towel over the folded hood first as an extra insurance against scratching up the rear window.
6. The straps are really more trouble than they’re worth. Anyway, many cars don’t even have the straps anymore.
7. There is an adjustable bow near the front of the hood that releases the tension of the hood material before you lock and un-lock the clamps item 2 and you must do the same procedure last of all when putting it up.
It is very important also to put the bow back into the tensioning position before stowing for two reasons. Firstly If you don't do this the bow can damage the paintwork because it strikes the body and secondly the hood material gets trapped between the bow and the hood assembly, and will not stow right down properly.
Note : It is also most important to fold the back light and hood all the way to the front header rail item 11, please read the Instruction carefully, Fig 3 line 3 .