NB: These instructions are given for guidance only and cannot engage the author's liability in the event of misinterpretation, failure to assess the vehicle's actual condition and/or non-conformity, unsuitable mechanical practice or the use of inappropriate tools.
DIY # 3
Balancing
the carbs - Laverda 750, 1000 and 1200
-
Get a good synchronizer. I've chosen the Carbtune II (Carbtune),
very stable thanks to its stainless steel rods (which replace the mercury) and
to its restricters
- Connect the hoses to the depression holes on the top
of the carbs.
- Turn the tank back to front in order to access to the setting
screws (see picture)
- Start and warm the engine. Put a fan in front of the
head to cool it.
- Once warmed, set the idle speed to 1700/1800 rpm.
-
Check the synchronizer screen and set the screws until balance is obtained, the
2 or 3 cylinders should be within 2 cmHg
- Accelerate sometimes to check
if the balance is still correct.
- Stop the engine, disconnect the hoses,
replace the screws to the depression holes.
- Start again the engine and set the idle speed and richness.
| So lovely, a set of Dell'Ortos! | We need a good synchronizer, precise and stable, here a Carbtune II | Connect the hoses to the depression holes (see arrow) |
| The air and balance screws (see arrows) | Balancing the carbs | A tricky way: Turn the tank back to front to get access to the balance screws |
| All 3 carbs within 2 cmHg, in spite of small variations? All is correct! | Ready to go! |