Use any JASO-MA or MA2 oil for this bike, of weight 10-40 W or 15-40 W. In case of a bike with a very worn engine, a single grade 40 W may be an option.
According to Haynes, the Honda CB900C Fork capacity (filled with ATF) is 9.5 oz on the 1980 model and 9.8 oz on the 1981 model.
My 1980 CB900C has a mfr's label above the gear case (left side). It reads: CAUTION USE ONLY HYPOID GEAR OIL SAE 80 ONLY 600cc
As many as it takes. otherwise there would be no need for an adjustment.
1,000,000
.6 to .7 mil
It is unlikely as the frames do not have the same part numbers cb900c 1980.............50100461000ZA 1981.............50100461750ZA 1982.............50100461750ZA cb1000c 50100MG1000ZA Regards Jake Preston,England
20w50
I have a 1982 cb900c. Check on the rear frame to see if there is an Emissions sticker. Mine is near the front of the rear tire on the driver's side of the bike. It lists several requirements for the bike, including oil type. Mine reads: SAE 10W-40 SE. The sticker is faded, but I believe mine reads 600cc oil capacity. CALL A HONDA SHOP AND VERIFY THIS INFORMATION BEFORE ATTEMPTING REPAIR. Repairmanuals.com probably has original manuals for your bike. ($35-40) Overfilling oil could lead to burning oil in the cylinders, which will cause damage to the engine and cause lots of blue smoke while running.
A 1980 cm400a Honda motorcycle take 2.9 liters of 15w-40 oil. You can also use diesel engine oil if you prefer as well.
7.4 OZ atf
This bike, which was also known as the Honda Hawk, has front forks that will hold 150 ml of fork oil for each fork.
2.6 if you are just replacing the old oil 3 to 3.5 if you have just rebuilt the engine