20-11-2020, 03:09 PM
c.855 is only 19mm choke, so much more tractable than 21 or Speedy's heinous 25mm - and thus good mpg. Put it back on?!
The old Companion guru seems to suggest that 19mm is theoretically the best match for the engine size.
The old Companion guru seems to suggest that 19mm is theoretically the best match for the engine size.