Honda CB HORNET 160R 2015 Shop Manual page 188

CRANKCASE/TRANSMISSION/KICKSTARTER
If the crankshaft removed, install the crankshaft first
(page 11-13).
Apply molybdenum oil solution to the shift fork grooves.
Apply clean engine oil to the transmission gear teeth.
Install the mainshaft and countershaft together into the
right crankcase. Be sure to install the three end washers
(mainshaft, left only countershaft, both ends.)
Each shift fork has an identification marks; " R/L" (right and
left), "C" (center).
Install the shift forks into the shifter gear grooves with the
marks facing up (left crankcase side).
Apply clean engine oil to the guide grooves in the shift
drum and install it, while aligning the shift fork guide pins
with the guide grooves.
11-16
MAINSHAFT
COUNTERSHAFT
"C" MARK
"R/L" MARK
SHIFT FORKS SHAFT