PowerLand PD3G4400E Owner's Manual page 18

Never use stale or contaminated gasoline or oil/gasoline mixture. Avoid getting dirt or water in
the fuel tank.
Occasionally you may hear a light "knock" or "pinging" (metallic rapping noise) while operating
under heavy loads. This is no cause for concern. If knock or pinging occurs at a steady engine
speed, under normal load, change to a lower octane rating.
If knock or pinging persists, see an authorized generator dealer.
NOTICE: Running the engine with persistent spark knock or pinging may cause engine
damage. Running the engine with persistent spark knock or pinging is misuse, and the
Distributor's Limited Warranty does not cover parts damaged by misuse.
Oxygenated Fuels
Some conventional gasoline fuels are being blended with alcohol or an ether compound. This
gasoline fuel is collectively referred to as oxygenated fuels. To meet clean air standards, some
areas of the United States and Canada use oxygenated fuels to help reduce emissions.
If you use an oxygenated fuel, be sure it is unleaded and meets the minimum octane rating
requirement.
Before using an oxygenated fuel, try to confirm the fuel's contents.
Some states/provinces require this information to be posted on the pump.
The following are the EPA approved percentages of oxygenates
ETHANOL—(ethyl or grain alcohol) 10% by volume.
You may use gasoline containing up to 10% ethanol by volume. Gasoline
containing ethanol may be marketed under the name Gasohol.
MTBE — (methyl tertiary butyl ether) 15% by volume
You may use gasoline containing up to 15% MTBE by volume.
METHANOL — (methyl or wood alcohol) 5% by volume
You may use gasoline containing up to 5% methanol by volume as long as it also
contains co solvents and corrosion inhibitors to protect the fuel system. Gasoline
containing more than 5% methanol by volume may cause starting and/or
performance problems. It may also damage metal, rubber, and plastic parts of your
fuel system.
If you notice any undesirable operating symptoms, try another service station or switch to
another brand of gasoline.
Fuel system damage or performance problems resulting from the use of an oxygenated fuel
containing more than the percentages of oxygenated mentioned above are not covered under
warranty.
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