Fuel System Troubleshooting; Engine Ignition Timing Specifications - Kohler Decision-Maker 1 Manual

Some models use an optional gas strainer with a
reusable filter element which requires cleaning at the
specified interval. See Figure 9-12 and use the
following procedure to clean the gas strainer.
1. Close the fuel supply valve, if not already closed.
2. Use a wrench and remove the pipe plug.
3. Remove the filter and clean in solvent and air dry.
Inspect the screen for damage and replace if
damage is noted.
4. Reinstall the filter element and pipe plug.
3
1. Gas strainer inlet
2. Pipe plug
3. Filter element (stainless steel mesh)
Figure 9-12 Gas Strainer Filter Element

9.7 Fuel System Troubleshooting

There are several
performance. The following lists components that
require inspection, adjustment,
replacement. Use this list as a guideline for
troubleshooting.
Most problems with gas fuels involve either fuel
pressure or fuel regulator
troubleshooting consists of verifying fuel pressures and
checking each fuel system component.
Check the following items:
D
Check primary fuel regulator outlet pressure (gas
models). This is the line pressure.
D
Check fuel shutoff inlet pressure (gas models).
170 Section 9 Gas Fuel Systems
1
items which affect
and/or possible
function.
D
Check secondary fuel regulator inlet pressure (gas
models).
D
Check fuel inlet pressure at the gas mixer.
D
Check for dirt buildup on the LP liquid withdrawal
vaporizer fins.
blockage preventing heat absorption by the vaporizer
(LP liquid withdrawal models).
D
Perform fuel system maintenance if necessary. See
Section 9.6, Fuel System Maintenance.
9.8 Engine Ignition Timing
Specifications
(10- -100 kW Ford-Powered Models)
Adapted from Service Bulletin SB-575.
2
This section summarizes engine ignition timing
specifications for most Ford-powered generator sets
including discontinued generator set models and fuel
system options.
Engine ignition timing information for all fuels and fuel
292485-A
combinations is generally not listed in the engine
operation and service manuals.
Figure 9-13 provides the engine and/or generator set
manufacturer's ignition timing recommendations for
optimum engine performance at sea level.
Before adjusting the engine ignition timing on distributor
ignition systems, be sure the fuel meets the engine
engine
manufacturer's specifications indicated in the engine
operation manual. If engine knocking or detonation
occurs, reduce engine ignition timing at 1--2 degree
increments until the engine knocking stops and the
engine operates smoothly.
Most distributorless ignition systems are factory-set and
Basic
not adjustable.
ignition timing specifications and Figure 9-14 to confirm
the factory lead connection configurations.
Check for generator set air flow
See Figure 9-13 for distributorless
TP-6356 4/12