rustybentwrench
Well-Known Member
Hello, new to the site.
I have a BACCIO scooter. Yup. Baccio. I can't find much on it, but do know it has a minarelli style 49cc horiz two stroke engine.
The main complaint is that it will not take full throttle. It is running lean and runs stronger after I drill the main jet out. Manual calls for a 76 main jet, I've drilled out to 98. It ran allot better but still goes flat at WOT. I bought a new carb, and the results were the same. Upon inspection, I found the compression was low -60psi. I rebuilt the top end (piston / rings) - everything went together tighter, piston fit and ring end gaps were at the min. as listed in the manual. Before stating it up, rechecked compression - 60psi. I don't get it. I've got about 20 minutes on the engine, and should check it again. But it runs the same. I could jet it up, but it is way more than the manual calls for.
ALSO - I noticed when I had it apart, the std spark plug BP6HS does not come down into the combustion chamber. It looks like a 3/4" reach plug is needed. All the books on this engine call for BP6HS.
enlighten me. THX
I have a BACCIO scooter. Yup. Baccio. I can't find much on it, but do know it has a minarelli style 49cc horiz two stroke engine.
The main complaint is that it will not take full throttle. It is running lean and runs stronger after I drill the main jet out. Manual calls for a 76 main jet, I've drilled out to 98. It ran allot better but still goes flat at WOT. I bought a new carb, and the results were the same. Upon inspection, I found the compression was low -60psi. I rebuilt the top end (piston / rings) - everything went together tighter, piston fit and ring end gaps were at the min. as listed in the manual. Before stating it up, rechecked compression - 60psi. I don't get it. I've got about 20 minutes on the engine, and should check it again. But it runs the same. I could jet it up, but it is way more than the manual calls for.
ALSO - I noticed when I had it apart, the std spark plug BP6HS does not come down into the combustion chamber. It looks like a 3/4" reach plug is needed. All the books on this engine call for BP6HS.
enlighten me. THX