Oil leaking from countershaft

It is a very easy repair. Remove your chain and front sprocket, pull the spacer sleave of the counter shaft (might be slightly rusted in place). Take a small hook or dental pick and remove the old O-ring from the counter shaft. Make sure the countershaft is clean, and install a new O-ring. Next, remove the old oil seal from the casing, and install a new one. Clean the spacer well, put some oil on the inside and outside surfaces of the spacer, and re-install it. Put your chain and sprocket back on and you should be good to go.

Service Honda, you are on the pc, price them out? Watch installation, most parts are 1 way only. If the collar has a ridge where the seal rides, replace it also. Almost nobody stocks parts in house. There are 2 different warehouses, 1 next day parts, 1 @ 3 days. Business days of course.