Toro Power Throw 622 Operator's Manual page 24

OR WHITE GAS BECAUSE ENGINE
FUEL SYSTEM DAMAGE COULD
RESULT.
Toro also recommends that Toro
Stabilizer/Conditioner be used regularly in all Toro
gasoline powered products during operation and
storage seasons. Toro Stabilizer/Conditioner cleans
the engine during operation and prevents gum–like
varnish deposits from forming in the engine during
periods of storage.
Note: A fuel stabilizer/conditioner is most
effective when mixed with fresh
gasoline.
DO NOT USE FUEL ADDITIVES OTHER
THAN THOSE MANUFACTURED FOR FUEL
STABILIZATION DURING STORAGE SUCH
GB–15
All manuals and user guides at all-guides.com
AS TORO'S STABILIZER/CONDITIONER OR
A SIMILAR PRODUCT. TORO'S
STABILIZER/CONDITIONER IS A
PETROLEUM DISTILLATE BASED
CONDITIONER/STABILIZER. TORO DOES
NOT RECOMMEND STABILIZERS WITH AN
ALCOHOL BASE SUCH AS ETHANOL,
METHANOL OR ISOPROPYL. ADDITIVES
SHOULD NOT BE USED TO TRY TO
ENHANCE THE POWER OR PERFORMANCE
OF MACHINE.
1. Clean area around the fuel tank cap (Fig. 13).
Remove cap from fuel tank. Using unleaded,
regular gasoline, fill tank to within 1/4" to 1/2"
(6 to 13 mm) from the top of the tank, not into
the filler neck. This space is for expansion of
fuel. Do not fill tank full. Reinstall fuel tank cap.