Cleaning The Cooling Systems; Greasing And Lubrication - Toro 74177 Operator's Manual

Cleaning the Cooling Systems

Cleaning the Engine Screen
Before each use, check and clean the engine screen.
Remove any buildup of grass, dirt, or other debris from the
engine air intake (Fig. 42).
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Ó Ó Ó Ó
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Figure 42
1. Engine screen
Cleaning the Engine Fins
Every 100 hours clean engine cylinder and cylinder head
cooling fins. Also clean around carburetor, governor levers
and linkage. This will make sure adequate cooling to
hydraulic pumps, motors and engine and will reduce the
possibility of overheating and mechanical damage.
1. Remove the panels from the engine shroud.
2. Clean the engine cooling fins.
3. Install the panels onto the engine shroud.
1
2
Figure 43
1. Panel
2. Engine shroud

Greasing and Lubrication

Lubricate the machine when shown on the Check Service
Reference Aid decal (Fig. 44). Grease more frequently
when operating conditions are extremely dusty or sandy.
Grease with No. 2 general purpose lithium base or
molybdenum base grease.
1
m–3801
3
m–5616
m–3801
3. Screws
33
How to Grease
1. Disengage the power take off (PTO), stop the engine,
and remove the key.
2. Clean the grease fittings with a rag. Make sure to scrape
any paint off of the front of the fitting(s).
3. Connect a grease gun to the fitting. Pump grease into
the fittings until grease begins to ooze out of the
bearings.
4. Wipe up any excess grease.
Where to Add Grease
Lubricate the grease fittings as shown on the Check
Service Reference Aid decal (Fig. 44).
Figure 44
Greasing the Front Caster Pivots
Lubricate the front caster pivots once a year.
1. Remove the dust cap and adjust the caster pivots. Keep
dust cap off until greasing is done. Refer to Adjusting
the Caster Pivot Bearing, page 39.
2. Remove the hex plug. Thread a grease zerk into hole.
3. Pump grease into zerk until it oozes out around top
bearing.
4. Remove grease zerk in hole. Reinstall hex plug and cap.