Walker H37i - Fuel Filter; Mower Blades

69
Maintenance Instructions REPLACING/REPAIRING
Fuel Filter
DANGER
Gasoline is extremely ammable and can
be highly explosive. To minimize danger:
● Before servicing the fuel system:
1) Disconnect the spark plug leads.
2) Disconnect the negative (-) battery
cable from battery.
● Use only an approved fuel container
for gasoline.
● DO NOT allow open ames or sparks
near the machine while performing
main tenance or refueling; DO NOT
smoke while working with fuel.
● Wipe up spilled gasoline immediately
and completely.
Model H37i is equipped with a 20 micron inline fuel
lter (Briggs & Stratton P/N 845125) between the
fuel tank and the fuel pump (low pressure pump).
Replacement of this lter is recommended every
200 hours of operation or when contamination is
suspected or found in the fuel.
Fuel Pump
InLine
Fuel Filter
Fuel Filter Location
IMPORTANT: Replace the fuel lter only in a clean
area where the fuel line and connections will not be
contaminated by dust and dirt.
1. Expand and slide clamps on either side of the
lter away from lter and pull fuel lines o󰀨 lter.
2. Replace lter, making sure that the arrow on the
lter is aligned with the fuel ow through the
lter.
3. Verify that the fuel lines and clamps are securely
attached, and that no fuel leaks are present.
Mower Blades
Mower blades are removed and remounted as de
scribed in Sharpen Mower Blades instructions (re
fer to CHECKING/SERVICING in this section). Dur
ing the course of sharpening and inspecting mower
blades, if there are any of the following conditions
of wear or dam age, blades should be replaced
for reasons of safe ty and performance of the ma
chine:
● An excessive amount of the at section of the
blade has been ground away (removed) when
the blade is sharpened. Replace the blade
when less than a 3/4 in. (19 mm) at section
remains at the blade tip.
● Examine ends of the blade carefully, especially
the intersection where the at section of the
blade turns up to form the “wing tip” (refer to
CHECKING/SERVICING for Mower Blade
Pro le for Sharpening illustration in Sharpen
Mower Blades instructions). Since sand and
abrasive ma terial can wear metal away in this
area, the blade should be replaced when met-
al thickness has worn to 1/16 in. (1.6 mm) or
less.
DANGER
When blades are operated over sandy
soil, and if blades are allowed to wear, a
“slot” may be worn into the wing tip of
blade. Eventually a piece of the blade
may break o󰀨 creating a serious potential
for injury or damage.
● Check the blades for straightness by marking
blade tip position inside the deck housing and
then ro tating the opposite end of the blade to the
same po sition and comparing. If the di󰀨erence
in blade tip track is more than 1/8 in. (3 mm),
the blade is bent and should be replaced.