There has been some confusion about oil checking procedures for the F2.5A and F2.5B models. Both models have a
sight glass to view the oil, but there is an important difference! The sight glass on the port side of the F2.5A block is
used to check the oil level. The sight glass on the F2.5B, on the other hand, is only to verify oil lubrication while the
engine is running – not for checking oil level. Instead, the F2.5B has a dipstick to check the oil level.
If there are questions about checking oil on these models, please refer to the specific engine’s Owner’s Manual
for more information, or email [email protected].