This is a write-up I did on changing the final drive oil on the 1800C but all makes/models are basically the same procedure.
http://www.bareasschoppers.com/driveoil
Last update: 2004-12-18 23:35
Author: Bareass
Draining Final Drive oil notes by BIGLRY
A small note on final drive oil service per service manual. Page 3-18 "Place motorcycle on side stand on a level surface. Remove the oil filler cap and drain bolt, slowly turn the rear wheel and drain the oil" page 3-17 level check "place motorcycle on its side stand on a level surface. Remove the final drive oil filler cap. check that the oil level is to the lower edge of the oil filler hole." I've done mine at 600 miles and saw what I know as normal break in crud. the book says 4.1 oz to fill and on the side stand. That is exactly what mine took. The "level surface" refers to front wheel and rear wheel be on same plane, as not to have more oil in front of case or back of case, to get a true reading. I think if bike is upright that you may over fill, and then you might see some oil coming out the vent on the top of case on a hard run. "Slowly turn the rear wheel" and you will have oil all over your floor unless you have some one to hold catch pan as you walk bike, and it is very awkward to roll bike laid over at side stand angle.LOL I just let mine set on side stand for 1/2hr with drain bolt out before putting back together. one other thing it is a bitch to get oil in as there is a inward facing casing lip and if you try to put in to fast it pours right back out. I used small hose into case with funnel on top little slow but much cleaner BIGLRY Out
Last update: 2004-10-29 10:27
Author: BIGLRY
Is there an advantage to switch to synthetic final drive oil, and if so, what would be the recommended brand and weight? Author; Tapper
Synthetic gear oil will hold up longer in the final drive, and run cooler, and your gears will wear less in the process.
There are a number of good oils for this. A lot of folks use Mobil 1 75w-90, some use the Amsoil. Both will give good service.
Stay with a 75w-90, that's the right weight.
Last update: 2005-01-15 08:19
Author: Tapper
http://www.bareasschoppers.com/driveoil
Last update: 2004-12-18 23:35
Author: Bareass
Draining Final Drive oil notes by BIGLRY
A small note on final drive oil service per service manual. Page 3-18 "Place motorcycle on side stand on a level surface. Remove the oil filler cap and drain bolt, slowly turn the rear wheel and drain the oil" page 3-17 level check "place motorcycle on its side stand on a level surface. Remove the final drive oil filler cap. check that the oil level is to the lower edge of the oil filler hole." I've done mine at 600 miles and saw what I know as normal break in crud. the book says 4.1 oz to fill and on the side stand. That is exactly what mine took. The "level surface" refers to front wheel and rear wheel be on same plane, as not to have more oil in front of case or back of case, to get a true reading. I think if bike is upright that you may over fill, and then you might see some oil coming out the vent on the top of case on a hard run. "Slowly turn the rear wheel" and you will have oil all over your floor unless you have some one to hold catch pan as you walk bike, and it is very awkward to roll bike laid over at side stand angle.LOL I just let mine set on side stand for 1/2hr with drain bolt out before putting back together. one other thing it is a bitch to get oil in as there is a inward facing casing lip and if you try to put in to fast it pours right back out. I used small hose into case with funnel on top little slow but much cleaner BIGLRY Out
Last update: 2004-10-29 10:27
Author: BIGLRY
Is there an advantage to switch to synthetic final drive oil, and if so, what would be the recommended brand and weight? Author; Tapper
Synthetic gear oil will hold up longer in the final drive, and run cooler, and your gears will wear less in the process.
There are a number of good oils for this. A lot of folks use Mobil 1 75w-90, some use the Amsoil. Both will give good service.
Stay with a 75w-90, that's the right weight.
Last update: 2005-01-15 08:19
Author: Tapper