Can you be a bit more specific as to the scale and maker of the model.
If it is an older IMAI kit my "HD FLH Electra Glide" Instructions might help.
Also managed to find some 1/6 scale Tamiya instructions in the pile.
OTOH, I found this item online:
"| REVELL 1/8 7910 40.00 HARLEY DAVIDSON 1200 ELECTRA GLIDE C.H.I.P. BIKESEALED |
| 1981 BOX SLIGHTLY PULLED IN FROM SHRINKWRAP
"
Using those terms you might get a better respond to your query.
HTH.