7.5kW
Displacement............................................................................... 420cc
SparkPlugType................................ OhampionN9YOor NHSPLDF7TO
SparkPlug PartNo........................................................... 0G84420101
SparkPlug Gap............................. 0.028-0.031 inch or (0.70-0.80 ram)
GasolineOapacity............................................28.4 L (7.5 U.S. gallons)
OilType.................. SeeOhartin "Before Starting the Generator"Section
OilOapacity.......................................................... 1.0 Liters (1.06 Qts.)
RunTime (50%Load)..............................................................12 Hours
3.4 GENERALRECOMMENDATIONS
Thewarrantyof thegeneratordoes not cover itemsthat havebeen
subjectedto operator abuseor negligence.To receivefull value
from the warranty, the operator must maintain the generator as
instructed inthis manual.
Some adjustmentswilt need to be made periodically to properly
maintainthegenerator.
All adjustmentsin the Maintenancesection of this manual should
be madeat leastonceeachseason.Followthe requirementsinthe
"MaintenanceSchedule".
NOTE:
Once a year replace the spark plug and replace the air filter.
A new spark plug and clean air filter assure properfuel-air
mixtureand helpthe engine run better and last longer.
3.4.1 GENERATORMAINTENANCE
Generatormaintenanceconsists of keepingthe unitcleanand dry.
Operateand storethe unit in a clean dry environmentwhereit will
not be exposedto excessive dust, dirt, moisture or any corrosive
vapors.Coolingair slotsin thegeneratormust not becomeclogged
with snow, leaves,or anyotherforeign material.
Checkthe cleanlinessof the generatorfrequentlyand cleanwhen
dust, dirt, oil, moistureor otherforeign substancesarevisible on
its exteriorsurface.
,&,CAUTION!
,_ Never insert any object or tool through the air
cooling slots, even if the engine is not running.
NOTE:
DONOTusea gardenhoseto cleangenerator. Water canenter
theenginefuel systemand causeproblems,in addition, if water
enters thegenerator throughcoolingair slots,somewaterwill
be retainedin voidsand crevicesof the rotorand stator winding
insulation.Water and dirt buildup on the generator internal
windingswill eventually decreasetheinsulationresistanceof
thesewindings.
3.=/.2 TOCLEANTHEGENERATOR
* Usea damp cloth to wipe exteriorsurfaces clean.
. A soft, bristle brush may be usedto loosen caked on dirt, oil,
etc.
. A vacuumcleanermay be usedto pick up loosedirt anddebris.
. Low pressure air (not to exceed 25 psi) may be used to
blow away dirt. Inspect cooling air slots and openings on the
generator.Theseopeningsmustbekeptcleanandunobstructed.
3.4.3 ENGINEMAINTENANCE
When working on the generator, always
disconnect spark plug wire from spark plug and
keep wire away from spark plug.
3.4.4 CHECKINGOILLEVEL
Seethe "BeforeStarting theGenerator"sectionfor informationon
checkingthe oil level.The oil level should be checkedbeforeeach
use, or at least every eight hours of operation. Keepthe oil level
maintained.
3.4.5 CHANGINGTHEOIL
Changethe oil after every 100 hours. If running this unit under
dirty or dusty conditions, or in extremelyhot weather,changethe
oil moreoften.
,A CAUTION!
,_Hot oil may cause burns. Allow engine to
cool before draining oil. Avoid prolonged
or repeated skin exposure with used oil.
Thoroughly wash exposed areas with soap.
Use thefollowing instructionsto changetheoil after the engine
coolsdown:
1. Cleanareaaroundoil drainplug.
2. Removeoil drain plugfrom engineand oil fill plug to drainoil
completelyinto a suitablecontainer.
3. When oil has completely drained, install oil drain plug and
tightensecurely.
4. Fill engine with recommendedoil. (See "Before Starting the
Generator"for oil recommendations).
5. Wipeup anyspilledoil.
6. Disposeof usedoil at a propercollectioncenter.
3.4.6 REPLACINGTHESPARKPLUG
Use ChampionN9YCspark plug or equivalent.Replacetheplug
every 200 hours.This will help the engine start easier and run
better.
1. Stopthe engineand pull the spark plug wire off of the spark
plug.
2. Cleanthe area aroundthe spark plug and remove it from the
cylinder head.
3. Setthe spark plug's gap to 0.70-0.80 mm (0.028-0.031 in.).
Installthe correctly gappedspark plug into the cylinder head
(Figure14).
Figure 14 - Spark Plug Gap
13