13 Maintenance 13.8 Drive belts / drive chains 67089 87669 13.8.15 Adjusting belt (R13) R13 Y 1 Z 4 3 2 Observe the general warnings at the beginning of the "Maintenance" chapter. 30057 99 Adjust the spring-loaded cylinder (3): Loosen lock nut (1). Adjust spring guide tube (2) so that spring (3) is slightly coil-bound. Then turn the spring guide tube 2 mm back. The spring must then have a length (Z) of approx. 87 mm. Adjusting the belt guide: Adjust the guide so that there is 13 mm clearance (Y) between the back of the belt and the belt guide along its full length. Carry out a test run and check belt tension. 334 00 0293 210 2 - BA DOMINATOR 150/140/130 - 12/09