Kohler 6VSG Service Manual

58 Section 4 Troubleshooting TP-6844 1/13
Cranks but
does not
start
No fuel Verify that manual fuel valve is
open.
Check fuel supply tank (LPG).
Open (turn on) manual fuel valve.
Contact fuel supplier to add fuel to
fuel supply tank (LPG).
—
Insufficient fuel
pressure
Check fuel pressure to the
generator set. Verify adequate
fuel pressure and pipe size for the
generator set plus all other gas
appliances.
Contact fuel supplier to replace
fuel supply lines with larger pipe
and replace gas meter if fuel
pressure is insufficient.
Section 5.8.2
Fuel
regulator/valve
Check regulator/valve operation. Check regulator/valve operation. Section 5.8
Section 4
Weak battery Check the battery voltage. Recharge or replace battery. O/M
Check battery charger
connections and power
connection to the generator set.
Tighten loose connections. W/D Section 7
Spark plugs or
spark plug
connections
Check spark plug wires and
connections.
Check spark plugs.
Tighten connections. Replace
spark plug wires if damaged.
Replace or clean and re-gap spark
plugs.
O/M
Loose connection
or open circuit
Check for loose or open
connection at the fuel valve (lead
70A) and at the engine spark
control module (leads IGN and
70B). Check controller/engine
wiring continuity.
Tighten connections. Replace
wiring if damaged.
Section 7
Air cleaner clogged Check for a dirty air cleaner
element.
Replace air cleaner element.
Check and replace air cleaner
element at the intervals shown in
the Service Schedule.
O/M
Incorrect controller
settings
Check the genset model setting. Enter the correct genset model
number setting. Engine model is
selected automatically based on
genset model.
Section 3.3
Ignition system
spark control or
ignition coil
Test according to instructions in
the engine service manual.
Adjust or replace components as
indicated in engine service
manual.
Engine S/M
No engine rotation
sensed (check for
an overcrank or
locked rotor fault
shutdown)
Check the cranking circuit. Troubleshoot engine and
alternator.
Engine S/M
Problem Possible Cause Test Corrective Action Reference
W/D = Wiring Diagram(s) (Section 7) Engine S/M = Engine Service Manual
I/M = Generator Set Installation Manual O/M = Generator Set Operation Manual
S/S = Generator Set Specification Sheet

Kohler 6VSG Specifications

General

Brand	Kohler
Model	6VSG
Category	Portable Generator
Language	English