D1146/D1146TI/DE08TIS MAINTENANCE MANUAL Causes according to operating conditions 1. Overload 2. Freqent use of low geae position at high speed 3. Freqent use of high geae position at low speed 4. Clutch slip 5. Too low tire inflation pressure 26 Printed in Jan. 2001 PS-MMA0415-E1A