Walker H37i - Important Tips for Care of the Briggs & Stratton Engine; Fuel System; Starting;Stopping; Cooling System

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Maintenance Instructions BRIGGS & STRATTON TIPS
IMPORTANT TIPS FOR CARE OF THE
BRIGGS & STRATTON ENGINE
Fuel System
● Fuel must be clean—free from water, dirt, and
or ganic material.
● Change fuel lter on a regular basis and when
contamination is suspected or found in the fuel.
● The fuel injection pump module is a sealed unit
and is not serviceable; opening the fuel pump
module will void the warranty. Additionally, the
fuel pump module and the fuel lines between it
and the injectors are pressurized. For service
of the pressurized fuel injection system includ
ing the fuel pump module, fuel lines, and fuel
injectors, contact your Walker dealer or autho
rized Briggs & Stratton service dealer.
Starting/Stopping
● Start engine with the throttle advanced o󰀨 idle
to a midpoint (1/4 to 1/2) throttle setting. This
will aid starting, especially in cold weather.
● Keep the battery fully charged.
● Match crankcase oil viscosity to the ambient
tem perature, allowing the engine to crank faster
and start easier.
● Allow engine to run at idle for a few seconds
before stopping engine to avoid runon or back
ring.
Cooling System
CAUTION
DO NOT use water or a pressure washer to
clean the cooling system on an air-cooled
engine; mud may form under the cooling
shroud on the cylinder head and cooling
fan resulting in engine overheating.
● Keep engine air intake screen and cylinder head
ns free of grass clippings, cha󰀨, and dirt. In
spect intake screen and cooling ns for cleanli
ness and no damage.
● Check performance of the cooling system by
starting the engine, holding a hand adjacent to
the cylinder head, and feeling the cooling air
ow.
DANGER
Make sure to keep hands clear of exhaust
pipe, mu󰀪er, and moving parts when
checking airow.
● Operate the engine at full speed when mowing.
This allows the engine to produce full horse
power and move more cooling air through the
engine cool ing ns.
Air Cleaner System
● Use only Briggs & Stratton air cleaner elements.
Aftermarket elements may not seal in the air
cleaner housing, allowing dirt to enter the en
gine. Also, aftermarket lters often skimp on the
ltration media and require more frequent
replacement (see following instructions).
● DO NOT overservice or frequently “disturb”
the air lter. A dirty air lter actually cleans bet
ter than a new one. Changing and cleaning the
air lter too often can ac tually reduce lter e󰀩
ciency and increase the oppor tunity for traces of
dust to enter the engine.
● When the air lter element is removed or re
placed, make sure all dust is cleaned out of the
air cleaner housing. Use a damp cloth and
wipe the interior of the canister clean, including
both the inside and outside surfaces of the outlet
tube (a lit tle dirt left here will be sucked into the
engine and reduce engine life). When the lter
is reinstalled, make sure the element is held
tight and straight in the canister for proper
seating and sealing.
● Periodically check the air intake hose for cuts,
nicks, etc., and the hose clamps for tightness.
Oil
● Use only multiviscosity oils as specied with the
viscosity matching ambient temperatures for the
engine operating conditions. This will aid start-
ing in cold weather and assure proper lubrica
tion in hot weather.
● Use only Briggs & Stratton oil lters. Aftermar-
ket lters may not seal properly and/or have
the incorrect pressure relief valve for proper lu
brication.