Home › Forum › Ask A Member › ’83 ERude E5RHCTA 4.5 hp carb tune-up literature › Re: ’83 ERude E5RHCTA 4.5 hp carb tune-up literature
June 22, 2015 at 11:02 pm
#18715
Good information, thankyou. You are finding sheared flywheel keys because the flywheels have not been torqued properly during past repairs. Under torqueing, or slamming the nut down with a zip gun will cause a sheared key.
Once the key has been sheared, the tapers usually get galled or distorted, causing future key problems even if the nut get properly torqued. You can use light valve grinding compound to check/lap the tapers, just be sure to remove the mag plate and cover the upper seal. If the tapers won’t lap in properly, the flywheel taper may have been distorted from over tightening/zip gun.