Honeywell hw400 User Manual

Page of 56
CONSUMER MAINTENANCE SCHEDULE
7-2
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 Honeywell Portable Electrical Generator Service Manual
FUEL RECOMMENDATIONS
Before each use, check the fuel tank gage. If the fuel level 
is low, refill the tank with recommended fuel. NEVER 
OVERFILL.
General Fuel Information
Check the fuel gage located on the top of the generator 
near the fuel tank and refill the tank if fuel level is low. 
Refuel carefully to avoid spilling fuel. Do not fill above the 
shoulder of fuel strainer. Use unleaded gasoline with a 
pump octane rating of 87 or higher.
NEVER use stale or contaminated gasoline. Avoid getting 
dirt or water in the fuel tank. Always keep the fuel strainer 
in place while refueling.
Oxygenated Fuels
At certain times of the year, some U.S. locations may have 
only oxygenated fuel available. Oxygenated fuel is 
blended with alcohol or ether additives to increase octane 
quality, enhance combustion, and reduce exhaust emis-
sions.
Some areas of the United States use oxygenated fuels to 
help meet clean air standards.
Before using an oxygenated fuel, ensure pump octane rat-
ing is 87 or higher.
Some states (and provinces in Canada) require this infor-
mation to be posted on the fuel pump. If you notice unde-
sirable operating symptoms, switch to a conventional 
unleaded gasoline.
Fuel and fuel vapors are extremely flammable and 
explosive under certain conditions. 
• Refuel generator only outdoors, in a well-ventilated 
area.
• NEVER fill fuel tank while engine is running. Turn gen-
erator OFF and allow to cool before filling with fuel.
• NEVER smoke or allow flames or sparks near genera-
tor or where gasoline is stored.
• NEVER overfill fuel tank (no fuel should be in filler 
neck). After refueling, tighten the fuel cap securely. 
• Be careful not to spill fuel when refueling. Spilled fuel 
or fuel vapor may ignite. If any fuel is spilled, the area 
must be dry before starting the engine.
• Avoid repeated or prolonged contact with skin or 
breathing of vapor.
DANGER
NOTICE
Oxygenated fuels can damage paint and plastic. Be careful 
not to spill fuel when filling fuel tank. Damage caused by 
spilled fuel is not covered under warranty.
TABLE 7-2. Oxygenated Fuel Types
Ethanol 
(ethyl or grain alcohol)
Gasoline containing more 
than 10% ethanol by volume 
may cause starting or perfor-
mance problems. Gasoline 
containing ethanol may be 
marketed under the name 
"Gasohol".
Methanol 
(methyl or wood 
alcohol)
Gasoline containing metha-
nol must contain co-solvents 
and corrosion inhibitors to 
protect fuel system. Gasoline 
containing more than 5% 
methanol by volume may 
cause starting and/or perfor-
mance problems and may 
damage metal, rubber and 
plastic parts of fuel system.
MTBE 
(methyl tertiary butyl 
ether)
Gasoline containing up to 
15% MTBE by volume can 
be used.
NOTICE
To avoid damage to the engine, NEVER use stale or contam-
inated gasoline or oil/gasoline mixture. Avoid getting dirt or 
water in the fuel tank.
Use fresh gasoline with a pump octane rating of 87 or 
higher.
NOTICE
Running the engine with persistent spark knock or pinging 
can cause engine damage. Warranty does not cover parts 
damaged by misuse.