www.bikebandits.com has all the part schematics
H3 you can get one from your local auto parts store
I accidentally found a set of forward controls for your bike when I was looking for a set for my 1986 Honda VT700C Shadow. http://www.tcbros.com/id20.html "This kit fits Magna 750cc and 700cc models produced from 1982-1986."
2.6 US qt SAE 10W-40
All Magna's V-30, V-45, V-65 from 1982 to 1988 are all 6 speed 5 + overdrive, i know because I've owned 4 of them, still have a mint condition 1986 Magna V-45, a true 750cc not the 700cc.
Sorry for my English I will do my best to explain this. The carbs of this Honda Magna have a knob in the middle of the carbs. It is for idle adjust, but is the problem is bigger you have to clean the carbs, check the jets and diaphragms is better if you can use an air compressor or maybe a vacuum sincronizer.
this is a carb unit there should be a nice flow of fuel but pressure is not possible because this has no fuelpump
1986
Look in front of the motor,under muffler pipes,there you will find the starter motor.Take two mounting screws out and remove wire.
If it is like my 1986 VF700C Magna, you have to remove the gas tank to access the fuel filter. First, remove the seat and then remove the attachment bolt at the back of the tank. Then remove both attachment bolts at the front of the tank. You can now raise the tank enough to disconnect the fuel line from the shutoff valve on the tank (Make sure you shut off the fuel first). Now, you should be able to remove the tank. The filter box is situated between the two upper frame tubes. Two Phillips-head screws secure the cover. Remove these screws and remove the cover. You can now lift out the filter. Reverse procedure to install.
the cost of the Honda accord in 1986 is $34995
The 1986 Honda CRX already has a 1.5.