. MAINTENANCE MAINTENANCE PROCEDURE CLEAN INSIDE OF COOLING SYSTEM WARNING Stop the machine on level ground when cleaning or changing the coolant. Use a permanent type of antifreeze. If, for some reason, it is impossible to use permanent type antifreeze, use an antifreeze containing ethylene glycol. Super Coolant (AF-ACL) has an anti-corrosion effect as well as an antifreeze effect. The ratio of antifreeze to water depends on the ambient temperature, but to obtain the corrosion resistance effect, a minimum ratio of 30% by volume is necessary. When deciding the ratio of antifreeze to water, check the lowest temperature in the past, and decide from the mixing rate table given below.
It is actually better to estimate a temperature about 10 ° C (18 ° F) lower when deciding the mixing rate. Mixing rate of water and antifreeze 4 - 24 Immediately after the engine is s topped, the coolant is at a high t emperature and the radiator is under high interna l pressure. If the cap is r emoved to drain the coolant in this condition, th ere is a hazard of burns. Wait fo r the temperatur e to go down , then turn the cap slowly to release th e pressu re before removing it. Cleaning is c arried ou t with the e ngine running. When standing up or leaving the o perator's s eat, set the lock lever t o the LOCK position.
For d etails o f starting the engine , see"BEFORE STARTING E NGIN E (PAGE 3-63)" a nd "STARTING ENGINE ( PAGE 3 -79)" in the OPERATION section. uching the fan if the undercover is left removed. e machine when the engine is running. Ther e is danger of to uching the fan if the undercover is left remo Neve r enter behind th e machine when th e engine is r unning Clean t he inside of th e cooling s ystem, change the coolant an d replace the c orrosion resistor according t o the table below.
Kind of coolant Cleaning inside of cooling system and changing coolant Replacing corrosion resistor Permanent type antifreeze (All season type) Every year (autumn) or every 2000 hours, whichever comes first Every 1000 hours and when cleaning the inside of the cooling system and when changing coolant Non permanent type antifreeze containing ethylene glycol (winter, one season type) Every 6 months (spring, autumn) (Drain antifreeze in spring, add antifreeze in autumn) When not using antifreeze Every 6 months or every 1000 hours, whichever come first Min.
atmospheric temperature °C Above -10 -15 -20 -25 -30 °F Above 14 5 -4 -13 -22 Amount of antifreeze Liters 7.4 8.7 9.7 10.8 11.7 US gal 1.96 2.30 2.56 2.85 3.09 Amount of water Liters 15.0 13.7 12.7 11.6 10.7 US gal 3.96 3.62 3.36 3.07 2.83 Volume ratio % 30 36 41 46 50