Exmark Lawn Tractor - Manual (Page 34)

- 29 -
4.1.21 Remove engine shrouds and clean cooling fins:
Service Interval: 80 hrs.
a) Stop engine, wait for all moving parts to stop, and remove key.
b) Remove cooling shroud clean-out covers from engine and clean cooling fins.
Also clean dust, dirt, and oil from external surfaces of engine, which can cause
improper cooling.
c) Make sure cooling shroud clean-out covers are reinstalled. Operating the
engine without cooling shroud clean-out covers will cause engine damage due
to overheating.
4.1.22 Check spark plugs:
Service Interval: 160 hrs.
a) Remove spark plugs, check condition and reset gaps, or replace with new
plugs. See Engine Owners Manual.
4.1.23 Change fuel filter:
Service Interval: As Required
a) A fuel filter is installed between the fuel tanks and the engine. Replace
when necessary.
For Kohler EFI Units:
WARNING
POTENTIAL HAZARD
♦ Fuel system components are under high pressure.
WHAT CAN HAPPEN
♦ The use of improper components can result in system
failure, gasoline leakage and possible explosion.
HOW TO AVOID THE HAZARD
♦ Use only approved fuel lines and fuel filters for high
pressure systems.
Note: For Kohler EFI units use only high pressure clamps and SAE R7 or R9
hose available from Exmark or Kohler. Clamps require special pliers P/N 1-
643394 (Oetiker P/N 14100118 or Kohler P/N 2445505) for installation.
Replacement Filters
Exmark P/N 99-9403 (low pressure)
Kohler EFI
Kohler P/N 2405003 (high pressure)
Kohler Air-cooled
(except EFI)
Kohler P/N 2405010
Note: When replacing the fuel filter for the Kohler EFI units, wet the interior
of the new filter with gasoline before installation to prevent the high pressure
pump from tearing the filter.
Note: It is important to reinstall the fuel line hoses and secure with plastic ties
the same as they were originally installed at the factory to keep the fuel line away
from components that could cause fuel line damage.
For Kohler EFI units: Route the fuel line hoses as shown in Figure 5.