We have available the Honda Workshop manual EFI trouble shooting guide , this gives comprehensive diagnostics procedures and Dr H Diagnostic system connection guide

Please download from the links below

BF250
BF225
BF200
BF175
BF150
BF135
BF130
BF115
BF100
BF90D
BF80A
BF75D
BF60A
BF50D
BF40D

Honda BF Outboard Model list
Download HERE