Specifications

17

4. Remove the main jet (I4) and e-tube (X2),with a flat head screwdriver.
5. Replace the main jet with the main jet specified for high altitude service. This high
altitude main jet comes in a high altitude carburetor adjustment package with new
carburetor bowl and fuel shut-off solenoid O-rings.
6. Reassemble carburetor in reverse order. Replace carburetor bowl O-ring and solenoid
O-ring if necessary.
 7.Turnonfuelvalveandinspectforfuelleak.

NOTE: Makesuretheenginehasagoodgroundbeforetroubleshooting.

STARTING PROBLEM
PROBLEM POSSIBLE CAUSE SOLUTION
Engine will
not start,
stay running
or only runs
whenchoked
1. On/Off switch in
OFF position
Place On/Off switch in ON position.
2. Low or no fuel Add fuel.
3. Fuel valve in
OFF position
Place fuel valve in ON position.
4. Low oil or no oil Add oil.
5. Chokeinwrong
position
Forcoldstarts,chokemustbeinCLOSEDposition.
Onpullringchokes,pullringallthewayout.
Onleverchokes,moveleverallthewayindirection
of arrow.
If in doubt, remove air cleaner and visually verify
thatchokeplateisclosedandcompletelyblocking
entrance.
6. Checkfuel
condition
Ensure fuel is clean and fresh. If problem continues
refer to Fuel System under Maintenance.
7. Sparkplugwire
(is loose on plug
Ensurethatsparkplugwireistightlyconnectedto
sparkplug
8. Low oil shutdown
(LOS)
Makesureoillevelisuptofullmark,refertoOil
under Maintenance. If problem continues refer to
Inspection/Oil Level Switch under Governor/Low
Oil Shutoff.
9. Checkforspark Perform Ignition Test under Perform Test Checks.
10.Examinespark
plug condition
Perform Spark Plug Condition Check under
Maintenance.
11. Improper valve
clearance
Reset valve clearances (see Maintenance
Standards)
12. Cap not venting After performing Fuel Check, if problem still contin-
ues:
Run engine with gas cap loose or removed to see
if engine still stalls. If it does not stall, gas cap is
not venting. NOTE: California models of generators
and pressure washers have non-venting gas caps
for emissions. Venting air is supplied from carbon
canister.
If gas cap is not venting properly the fuel filter
couldbedirtyorblocked,sedimentcupfullof
debris or fuel valve could be clogged.
PROBLEM POSSIBLE CAUSE SOLUTION
Engine will
not start,
stay running
or only runs
whenchoked
(continued)
13.Gastank/fuel
filter does not
allow flow of gas
because it is dirty
orblocked
Thereare2typesofgastank/fuelfilterdesigns
used:
Onerequiresanin-linefilterlocatedinthefuelline
between the fuel valve and the carburetor. The other
has a tube shaped filter above the fuel valve inside
thegastank.Thisseconddesigndoesnotrequire
an in-line filter.
Tocheckthegastank/fuelfilter,placefuelvalve
leverintheclosed(horizontal)position,removefuel
line from fuel valve and place fuel valve lever in the
on(vertical)positiontocheckflowtoacatchpan.
If there is flow and the engine has only the internal
tankfilter,thefilterisnottheproblem.
If there is no flow, , place fuel valve lever in the
closed(horizontal)position,removefuelvalveto
accesstubefilter,cleanitandreassemble.Tocheck
in line filter disconnect fuel line from carburetor and
placefuelvalveleverintheon(vertical)position
tocheckforfuelflow.Ifnofloworweak,replace
fuel filter. See Service Bulletin SB06109 regarding
filters. NOTE: Air Compressors and Pressure
Washers have a fuel valve in the carburetor. On
these remove drain screw on carburetor bowl to
verify flow.
14. Sediment cup
full of debris (fuel
valve)
Placethefuelvalveleverintheclosed(horizontal)
position, remove fuel line from fuel valve and
placefuelvalveleverintheon(vertical)positionto
checkflowtoacatchpan.Ifnofloworweak,clean
sediment cup, refer to Fuel System to clean the
sediment cup. With sediment cup removed from fuel
valve, place fuel valve lever in the ON position to
verify flow from cup area into a catch pan. This will
confirm fuel valve itself is not clogged.
15. Fuel valve
clogged
Removevalvefromgeneratortankandwithvalve
in the OPEN position use compressed air to blow it
cleanorsoakitinsolvent.Orreplacevalve.
16. Evaporative
system not
venting fresh air
totanktoreplace
gas as being
used. (California
Units)
Ensurenoobstructions,kinksorblockagesarein
evaporative system hose connected to bottom of
gastankandtocharcoalcanisteronlowerframe.
Disconnecthosefromcanisterthatgoestotank.
With gas gap removed, blow through hose. Air
should flow freely. If not find obstruction and correct.
NOTE: On California versions of pressure washers,
evaporativesystemhoseexitsfromtopofgastank.