Changing Coolant In The Cooling System; Servicing The Engine Belts - Toro 30631 Operator's Manual

4. Clean and install the screen.
Changing Coolant in the Cooling
System
Capacity of cooling system is approximately 6 quarts
(5.7 L). The cooling system must be filled with a
50/50 solution of water and permanent ethylene glycol
anti-freeze. Every two years, drain the coolant from
the radiator by opening the drain cock (Fig. 30). After
coolant has drained, flush the entire system and refill
it with a 50/50 solution of water and anti-freeze.
1
Figure 30
1. Drain cock
When filling the radiator, the coolant level must be
above the core and 1 inch (25 mm) below the bottom
of the filler neck. DO NOT OVERFILL. Always
install the radiator cap (Fig. 31) securely.
1
Figure 31
1. Radiator cap
The level of coolant in the expansion tank (Fig. 32)
should be between the marks on the side of the tank.
1. Expansion tank

Servicing the Engine Belts

Check the tension of all belts initially after the first
day of operation and every 100 hours thereafter.
Alternator Belt
1. Unlatch and open the hood.
2. Proper tension will allow
deflection when a force of 10 lbs. is applied on
the belt (Fig. 33) midway between the pulleys.
3. If deflection is not
alternator mounting bolts. Increase or decrease
alternator belt tension and tighten the bolts.
Check belt deflection again to assure tension is
correct.
2
1. Alternator
2. Mounting bolt
28
1
Figure 32
3 ⁄ in. (10 mm)
8
3 ⁄ in. (10 mm), loosen the
8
Figure 33
1