CARBURETTOR INSERT (for Type 7D only)
Two different sizes of carburettor insert are used with the Type
7D carburettor. A large I.D. insert is installed in the carburettor
fitted to the MAX-90FSR. A smaller I.D. one is installed in the
carburettor of the MAX-61 engine.
In the case of the MAX-90FSR, ordinary suction feed is sufficient
to use this carburettor with the large insert. If, however,
higher power output is required for aerobatic flying, it is permissible
to remove the insert. In this case, a muffler pressurised fuel
system should be used.
In the case of the MAX-61, a muffler pressurised fuel system
should be used on this carburettor with the smaller I.D. insert.
If higher output is required, it is permissible to replace this with
the larger insert, or to remove the insert completely, but, in
these instances, a pumped fuel supply, such as the Perry