ORIGINAL: bogateer
In my request to keep my engines running I like to have some spare parts. I found a source on the intenet but it lists the choices for .049 and .062 as (Note, these numbers DO NOT [always] match up with the Norvel part munbers).
NVL100401 NORVEL CYL/PISTON 049 BLACK FOR A4-A4R
NVL100402 NORVEL CYL/PISTON 061 BLACK FOR A6-A6R
NVL100405 NORVEL CYL/PISTON 049 BLACK FORT B4-B4R
NVL100405-1 NORVEL CYL/PISTON 049 SILVER FORT B4-B4R
NVL100406 NORVEL CYL/PISTON 061 BLACK FOR B6-B6R
What is the difference between the "silver" and the "black fort:?
FORT is apparently a misspelling -- and should read simply FOR
A4 and A4R designate AME .049 C/L and the AME .049 RC respectively.
B4 and B4R are the Big Mig C/L and R/C .049 models.
A6, A6R, B6 and B6R are the AME and Big Mig .061 models -- the R is for R/C.
The BLACK is for the newer REVLITE AAO cylinder technology. The SILVER is the older AAN cylinder, smaller fins and notches for the cylinder screws.