Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) Discussions

Toro is using a Lincon 163cc engine in both their 421 and 621.  Both have the same engine but differ slightly in part number.

Toro lists these for the part numbers:

for the 421, 119-1942 1 Engine-Lc168Fds-1

for the 621, 119-1943 1 Engine-Lc168Fds-1

   They are probably the same engine with some minor change.

    The 421 has some sort of carb or EPA type listing as ACGPS 1631SA

    The 621 has BCGPS 1631SA.

     Anyone know what the difference in these two engines are?  I suspect a jet or governor spring change.  So far I have not been able to locate a parts breakdown for these two. 

for the 421, 119-1942 1 Engine-Lc168Fds-1

for the 621, 119-1943 1 Engine-Lc168Fds-1

   They are probably the same engine with some minor change.

    The 421 has some sort of carb or EPA type listing as ACGPS 1631SA

    The 621 has BCGPS 1631SA.

     Anyone know what the difference in these two engines are?  I suspect a jet or governor spring change.  So far I have not been able to locate a parts breakdown for these two. 

UPDATE:

    Went through the drawings and the only difference between the 421E and 621 is the carb listing.  The carb on the 421 is a Huayi which I think is similar to the carb on the Honda GX200 clones.  Looks like it might be easy to turn a 421 into a 621.  The Huayi carb are pretty cheap.