11.FINAL REDUCTION/ TRANSMISSION SYSTEM MXU 500 IRS Primary Drive Shaft Remove the primary drive shaft. Spring Remove the bolt/washer, then remove the stopper lever and spring. Stopper Lever Bolt/Washer INSPECTION Guide bar Measure the guide bar runout. Out of specification Replace. Service Limit: Less than 0.03 mm (0.0012 in) Do not attempt to straighten a bent guide bar. 11-19