Checking The Engine-Oil Level; Breaking In A New Machine - Toro 74933 Operator's Manual

4
3
2
1
Figure 7
1. LPG fuel hose connection
fitting
2. Tank valve
7. Unlatch the cylinder brackets and remove the tank.
WARNING
Fuel system components are under high
pressure. The use of damaged or improper
components can cause system failure, fuel
leakage, and possible explosion, which may
result in serious injury or death.
• Do not attempt to repair or modify the
valves, fittings, or other tank components.
• Only use the Toro approved LPG tank,
fittings, and hoses that were designed for
your mower.
8. Inspect the filled tank valve and fitting openings for
dirt, debris, or damage.
9. Inspect the tank hose connection fitting for damaged
or missing o-rings.
10. Ensure that the replacement tank type and size match
the tank specification decal.
11. Align the center hole over the mounting pin that points
straight up on the mower as shown in
G021497
3. Fuel gauge
4. Safety pressure relief
valve
Figure 8.
G021393
1. Cylinder brackets
2. Mounting pin
Important: The valves and gauges may not
function properly if the LPG tank is not installed
correctly.
12. Latch the cylinder brackets and ensure that the tank is
securely fastened to the mower.
13. Carefully connect the fuel hose. Ensure the hose is
not kinked.
14. Slowly open the fuel valve to equalize the pressure in
the tank.
Note: If the fuel valve is opened too quickly, the
pressure relief valve is equipped with a back pressure
check valve that will shut off the fuel supply. If this
happens, close the fuel valve completely and wait 5
seconds.
15. Check for leaks as described in
System (page 41).

Checking the Engine-Oil Level

Before you start the engine and use the machine, check
the oil level in the engine crankcase; refer to
Engine-Oil Level (page

Breaking in a New Machine

New engines take time to develop full power. Mower decks
and drive systems have higher friction when new, placing
additional load on the engine. Allow 40 to 50 hours of
break-in time for new machines to develop full power and
best performance.
17
Figure 8
3. Center hole
Inspecting the LPG
Checking the
37).