Craftsman C950-52546-0 Operator's Manual page 14

* Below 40°F (4°C) the use of SAE 30 will result in hard starting.
** Above 80°F (27°C) the use of 10W-30 may cause increased oil con-
sumption. Check oil level more frequently.
Fuel Recommendations
Fuel must meet these requirements:
• Clean, fresh, unleaded gasoline.
• A minimum of 87 octane / 87 AKI (91 RON). For high
altitude use, see below.
• Gasoline with up to 10% ethanol (gasohol) is acceptable.
NOTICE: Do not use unapproved gasolines, such as E15
and E85. Do not mix oil in gasoline or modify the engine to
run on alternate fuels. Use of unapproved fuels will cause
damage to engine components, which will not be covered
under warranty.
To protect the fuel system from gum formation, mix a fuel
stabilizer into the fuel. See Storage. All fuel is not the
same. If starting or performance problems occur, change
fuel providers or change brands. This engine is certified to
operate on gasoline. The emissions control system for this
engine is EM (Engine Modifications).
High Altitude
At altitudes over 5,000 feet (1524 meters), a minimum
85 octane / 85 AKI (89 RON) gasoline is acceptable. For
carbureted engines, high altitude adjustment is required
to remain emissions compliant. Operation without this
adjustment will cause decreased performance, increased
fuel consumption, and increased emissions. Contact
a Briggs & Stratton Authorized Service Dealer for high
altitude adjustment information.
Operation of the engine at altitudes below 2,500 feet
(762 meters) with the high altitude adjustment is not
recommended. For Electronic Fuel Injection (EFI) engines,
no high altitude adjustment is necessary.
14
Adding Fuel
WARNING
Fuel and its vapors are extremely flammable and
explosive.
Fire or explosion can cause severe burns or death.
When Adding Fuel
• Turn engine off and let engine cool at least 2 minutes
before removing the fuel cap.
• Fill fuel tank outdoors or in well-ventilated area.
• Do not overfill fuel tank. To allow for expansion of the
fuel, do not fill above the bottom of the fuel tank neck.
• Keep fuel away from sparks, open flames, pilot lights,
heat, and other ignition sources.
• Check fuel lines, tank, cap, and fittings frequently for
cracks or leaks. Replace if necessary.
• If fuel spills, wait until it evaporates before starting
engine.
Start the Engine
Be sure that engine oil is at FULL mark on the oil fill cap/
dipstick. The snowthrower engine is equipped with an A.C.
electric starter and recoil starter. Before starting the engine,
be certain that you have read the following information.
If engine floods, set the choke to the OPEN/RUN position
and crank until the engine starts.
WARNING: The electric starter is equipped with a
three−wire power cord and plug designed to operate on
AC house hold current. The power cord must be properly
grounded at all times to avoid the possibility of electric
shock which can cause injury to the operator. Follow all
instructions carefully as set forth:
Make sure your house has a three−wire grounded
system.
If you are not sure, ask a licensed electrician. If your
house does not have a three−wire grounded system, do
not use this electric starter under any condition.
If your house has a three−wire grounded system but
a three-hole receptacle is not available to connect the
electric starter, have a three−hole receptacle installed by
a licensed electrician.
WARNING: To connect power cord, always
connect the power cord first to the switch box
located on the engine and then plug the other end
into a three−hole grounded receptacle.
WARNING: To disconnect the power cord, always
unplug the end connected to the three-hole
grounded receptacle first.