Marv 966 #1 Posted October 2, 2011 K series engines: Some starters have ten tooth pinion gears. Some have thirteen teeth. I have a K321 engine and need to replace the starter. I mated a 10 tooth starter to the engine and manually meshed the pinion to the flywheel. The mesh was very good. I did the same with a 13 tooth and it meshed well too.. My question, does it really matter how many teeth the starter has? Share this post Link to post Share on other sites
rmaynard 15,927 #2 Posted October 3, 2011 I have three K-241S engines. One has a 13 tooth starter, the other two have 10 tooth. Both work fine. The only difference is that the 13 tooth starter turns the engine over faster. Share this post Link to post Share on other sites
Kelly 1,030 #3 Posted October 3, 2011 They will all interchange as Bob said, but I have had to shim the 13 tooth starter on a few to make them not whine when cranking, I used a modified chevy starter shim. Share this post Link to post Share on other sites
Marv 966 #4 Posted October 19, 2011 Bob and Kelly, Thank you for the info. I have been confused by this for quite a while. Share this post Link to post Share on other sites
