Engine Cooling System; Alternator Belt - Toro Reelmaster 4000-D 03706 Operator's Manual

2. Move throttle to FAST position.
3. Turn key in key switch to START position and watch
fuel flow around connector. Engine will crank. Turn key
to OFF position when solid flow is observed.
4. Tighten pipe connector securely.
5. Repeat steps on remaining nozzles.

Engine Cooling System

Removing Debris
Remove debris from oil cooler, radiator and rear screen
daily, clean more frequently in dirty conditions.
1. Turn engine off, release front engine cover latches and
raise engine cover. Clean engine area thoroughly of all
debris.
2. Remove knobs securing rear screen to frame and
remove screen (Fig. 34).
1
Figure 34
1. Rear screen
3. Lift up on oil cooler handles and pivot rearward in
mounting slot. Clean both sides of oil cooler, radiator
and rear engine area thoroughly with compressed air.
4. Pivot oil cooler back into position and install rear
screen.
5. Lower engine cover and secure latches.
2
2. Knob
31
1
3
Figure 35
1. Oil cooler
2. Radiator
Maintaining Cooling System
Capacity of the system is 3.7 gal. (14 L). Always protect
cooling system with a 50/50 solution of water and ethylene
glycol anti–freeze. DO NOT USE WATER ONLY IN
COOLING SYSTEM.
• After every 100 operating hours, tighten hose
connections. Replace any deteriorated hoses.
• After every 800 operating hours, drain and flush the
cooling system. Add anti–freeze (refer to Check
Cooling System.

Alternator Belt

Condition and Tension
Check condition and tension of belt (Fig. 36) after every
100 operating hours.
• Proper tension will allow 3/8 in. (10 mm) deflection
when a force of 10 lbs. is applied on the belt midway
between the pulleys.
• If deflection is not 3/8 in. (10 mm), loosen alternator
mounting bolts. Increase or decrease alternator belt
tension and tighten bolts. Check deflection of belt
again to assure tension is correct.
2
3. Inline fuel filter