yes, you can read my stator rewire write up on how to neatly remove the cover that the stator/starter gear is hidden behind. You'll want to park the bike over an oil pan because it will drip half a pint of oil while you work, even if you park it level.
If you don't have it go buy gasket seal rtv silicone now. Before you start, slime your hands in dish detergent (it dries, amazingly, but oil won't attach to it) and set it and a paper cup of sugar by the sink. Sugar doesn't melt that easily and will tear the grease right off your hands in seconds as the detergent dissolves and lifts off the oil.
1. park over oil pan. Lay foil over your pipes under the stator to prevent it smoking when you start back up.
2. loosen clutch adjuster nut on handlebars until very slack.
3. loosen allen bolts holding two covers in place and stick them in the same arrangement through the lid of a pizza box so they are organized and go back in fast. Zip tie the clutch cable cover out of the way.
4. loosen the screws over the starter cover.
5. Unbolt the starter/detach the electrical cable.
6. carefully remove the gear from the shaft and try not to lose the circlip on the starter shaft. if it falls in your oil fetch it out with a magnet.
7. You'll need to lift the starter up from the butt end first, slide it out of the shaft hole at a slight rear upward angle. As you do, there comes a point where you have to rotate the starter to get around the carbs. Just rotate it as you lift it out. It's easy once you've done it.
8. Drop in the new starter in the reverse order of step 7, making sure circlip is in place, gear goes on well, and you are confident you bolted it back down inside/reconnected the electric lead.
9. Either trace a gasket to fit the stator cover and seal it with a generous amount of gasket seal on either side or seal the cover and bike side of the case with black rtv, finger tighten, and 30 minutes later wrench it down. Either way there's still a few drops of oil dripping out.
10. add a half a pint of new oil and clean out your oil pan.
Make sure the battery can put out enough amps. Volts are how many dollars the battery has, amps are how generous its going to be with that money. You want it to be generous (put out high amps) for a very short time at startup with an electric start. So it has to have a good amp rating. A bike mechanic usually will test the amp load of your bike for free. If the battery is old it will hold volts but be stingy with them. That won't work.
Good luck!