You will need to clean the carbs most likely. A great source for the various rubber parts can be found here: http://www.cycleorings.com I used a cheap-o (70.00) Harbor Freight ultrasonic cleaner for mine. Worked quite well. Great place for parts if you are going to put some $$$ in the bike: http://www.z1enterprises.com There are many, many OEM parts still available from Suzuki, so don't get caught on fleabay and spend too much $$$$. http://www.suzukipartsnation.com/oemparts/#/c/suzuki_motorcycle/parts This guy is awesome and has a vast amount of info: http://members.dslextreme.com/users/bikecliff/ Check the battery Check the ONE SINGLE glass fuse :) Check the points Clean the carbs I have a '78 GS750C that I just love. Fun, fun bike.