That is where I would start, too. pull it and pull it apart. clean, blow it out with air. ck connections. check motor windings continuity. service rotating assembly. ck bearings. drop oil on any metal to metal sliding/movement. I also like to put a battery charger on anything to start up next day that has been sitting for a week or longer. actually, operate yesterday, charge in am! to use next day. a topped off battery, showing full charge can make the difference in both quick start ups and improved starter performance.