Toro Z Master 75990 Operator's Manual page 18

Using Fuel Stabilizer/Conditioner
Use a fuel stabilizer/conditioner in the machine to
keep the fuel fresh during storage of 90 days or less.
If you are storing the machine for longer, drain the fuel
tank; refer to Servicing the Fuel Tank (page
Important:
Do not use fuel additives containing
methanol or ethanol.
Add the correct amount of fuel stabilizer/conditioner to
the fuel, and follow the directions of the manufacturer.
Note:
Fuel stabilizer/conditioner is most effective
when mixed with fresh gasoline. To minimize the
chance of varnish deposits in the fuel system, use fuel
stabilizer at all times.
Filling the Fuel Tank
1. Park the machine on a level surface.
2. Engage the parking brake.
3. Shut off the engine and remove the key.
45).
4. Clean around the fuel-tank cap and remove it.
Add regular unleaded gasoline to the fuel tank
until the level is 6 to 13 mm (1/4 to 1/2 inch)
below the bottom of the filler neck. This space in
the tank allows the gasoline to expand. Do not
fill the fuel tank completely full; refer to
7).
18
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Figure 7
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