HT25 - TRACTOR 37 If engine does not turn, check start interlock display. See CONTROLS . If engine turns but does not start within 10 seconds, allow starter to cool before trying to start again. 6. After engine is started, run engine at half-throttle or less for five minutes before operating tractor. Improper control function could cause death or serious injury. If control does not work as described in instructions, stop machine and have it serviced. During warm up, check that all controls work properly. 5. Turn key. Indicators will light. p STARTUP sf1020