After rebuilding half of this engine(84 70hp seahorse),found yesterday that the timer base is sticking or not moving freely!! when u throttle down or move the throttle lever ,the timing base does not move with it ...thats why my engine has been cutting out when u put her in foward under a load...or reverse.... My question to u guys is ......Can i clean the base or get it to move like it should ,without taking the flywheel off... I will be ordering the tool 378103 to take the flywheel off,but........................IM IMPATIENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!