G'day Norm,
There's a free 6.4MB download of the 'lite' version of the GXV120/160 service manual at:

http://www.honda-engines-eu.com/documents/10912/31969/1550/923b4816-9e57-4be2-9d82-e6efa7a24394

The carby 'main nozzle' as they term it, is the part that usually needs a careful clean of all of its holes.



Cheers,
Gadge

"ODK Mods can explain it to you, but they can't understand it for you..."

"Crazy can be medicated, ignorance can be educated - but there is no cure for stupid..."