I have a Toro Z5035 with the Kawasaki 24hp motor FR691V. I have had it for 12 years. Ever since I purchased it it goes through spells where it will not turn over. I can hook my truck to it to jump it or completely charge the battery. It just will not turn over. I've had it serviced twice for this problem but it always starts happening again. I've pulled 1 of the plugs out & it'll turn over with no problem. Has anyone else had this problem with this motor? Any solutions would be appreciated