Fuel Filter; Blade Overload Shear Bolts - Walker B27i Operator's Manual

Maintenance Instructions
Replacing and Repairing

Fuel Filter

Gasoline is extremely flammable 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 flames or sparks
near the machine while performing
maintenance or refueling;
smoke while working with fuel.
● Wipe up spilled gasoline immediately
and completely.
Model B27i is equipped with an inline fuel filter
between the fuel tank and the fuel pump (low pres-
sure fuel pump). Visually inspect the filter periodi-
cally, and replace the filter every 400 hours. Use
Walker P/N 5020-3 or Kohler P/N 24-050-13, 9-12
microns for replacement filter.
In-Line
Fuel Filter
Fuel Pump and Fuel Filter Locations
IMPORTANT: Replace the fuel filter 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
filter away from filter and pull fuel lines off filter.
62
DANGER
DO NOT
Fuel Pump
2. Replace filter, making sure that the arrow on
the filter is aligned with the fuel flow through
the filter.
3. Verify that the fuel lines and clamps are se-
curely attached, and that no fuel leaks are
present.

Blade Overload Shear Bolts

NOTE: Blade shear bolts are not used on belt
driven decks.
On gear driven decks, each cutting blade is keyed
to the blade hub by two (2) shear bolts (10-24 x
5/8 in. stainless steel machine screws). These
bolts are designed to shear and protect the blade
drive gearbox from damage if the blade encounters
a shock load.
Cutting Blade
Shear Bolts
Cutting Blade Shear Bolts
NOTE: Tightening the 5/8-18 blade mounting
nut to 60 lb·ft (81 N·m) is also important for prop-
er shock load protection. It is important to not
overtighten the mounting nut since this defeats
(overrides) the function of the shear bolts.
If these bolts shear, remove the blade and install
new bolts. Refer to Sharpen Mower Blades on
page 56 which describes the blade removal and
installation procedure.
After reinstalling the blade, check blade timing (on
gear driven decks) by moving blades through one
(1) complete revolution. Make sure blade tips
pass clear of each other. If timing is incorrect,
contact your Walker dealer.
B27i