I have a 2004 Yamaha Blaster and I pulled the drain plug too change the oil. It has a reserve box under the seat, how do you drain that oil or does it not get drained. And if not if its low in that box do I add the yamalube oil in there, thanks.

Run the bike to get it to normal operating temperature. Put an thin oil pan on the ground under the center of the engine. Look for the little rubber hose coming from the bottom of the bike with a plastic plug in it and held in the hose with a clamp. Loosen the clamp and save to reuse if it is the screw type. Then pull the plug out and open up the oil fill cap on right side by the seat.

Use heavy duty SAE 80W-90 gear oil

Engine oil does work but the oil will not last as long nor will it protect the bearing's/gear's as well as gear oil. Thick dif oil can work to.
Also the gear box is should be sealed.

You might pop a seal , tear a gasket, or fill your air box with oil fowling a perfectly good air filter. Place a clean pan under the drain plug and without completely removing the plug bleed out enough oil to get the correct level in the bike. Then, save the oil for topping up or your next change.

Oil drain plug is located near the bottom of the engine, left side toward the front. The oil filter element is located on the right side of the engine under the cover toward the front. Changing the oil filter usually requires removal of the front exhaust pipe. There is an aftermarket filter relocation kit that replaces the filter element with a spin on filter that mounts on the front of the bike.

UNDER SEAT
The battery is located in the battery box
below the seat.

Open the seat
Remove the screw then remove the
battery cover
Disconnect the negative terminal
lead from the battery first then
disconnect the positive ( ) terminal
lead
Pull the battery ( ) out of the battery
box.

http://www.silverwing.org/

IT LOSEING WATER IF SO THE HEAD GASKET GONE M

Crawl under the car and remove the front and rear splash covers under the engine. The forward panel is held by 6 studs (2 shared with the rear panel) and this has to come off first. The rear panel is held by another 4 studs, and the sump drain plug is concealed by this panel.

hi mate on the carb there are 2 screw one for mixture and one for idle you need to unscrew the mixture screw 1/2 of turns and see if this improves

Drain the transmission oil and drain the carberator and air box and youll be good to go.

i think the oil filter is at the front behind a round finned cover, if you find the drain plug it should be right above it, it shoud tell you how much oil it takes right next to the filler