Troubteshooting - Generac Power Systems GTV99O Service Manual

SECIION 1: GENERAL INFORMATION
REPLACE SPARK PLUGS:
Replace spark plugs every 100 hours of operation or every
season, whichever occurs first. Replace spark plugs if elec,
trodes are burned away, orthe porcelain is cracked. Setspark
plug gap at.76 mm (.030') for all models. Torquespark plugs
to 20.0 Nm (180 in. ibs_).
Figute 1 -5. Setting Spatk Plug cap
tions are notcarcfully followed, dirtand dun which should be
collected in the cleaner, will be drawn into the engine. These
particles are highlyabrasive
and willcausethe plston rings and
cylinder bore to wear quickly. As the rings and cytlnder bore
become worn, these abrasive particles enter the crankcase
and contaminate the oil, forming an abrasive mixture which
willcause wear on allof the internal moving pads.
The air cleaner on every engine brcught in for a check up
or repair should be examined and seNiced. tf the arr ceaner
shows signs of neglect, show ittothe customef berore oean-
ing. Instruct the customer on proper care, to assure long
engine life.
Note: Repla.e ai .leaner gaskets and mounting gaskets
that afe wom of damaged. to prcvent dirt and dust frcm
entering engine due to imryoper sealing. Replace bent
air cleaner mounting bracket if necessary,
SERVICE DUAL ELEMENTAIR
CLEANERS:
Remove and service foam pre-c eanerevery 25 hours orevery
season, wh ichever occurs firn.setuice canridge every 50 hou6
or ev€ry season, whichever occurs first.
SERVCE CAN STER AIR CLEANERS:
Clean the air filter elemen(s)with compressed air every 50
hours or every season, whichever occurs first. Replace the air
{ilter elementG) every 500 hou6 or if damaged.
Note: The air cleanet assemblies on some equipment
may have been supplied by the equipment manufa.-
turei See the equipment manufadurels owne/s manual
for seNi.e infomation specili. to that prcduct,
TROUBTESHOOTING
lvost compaints concerning englne operation can be clas-
sified as one or a combination ofthe followlngi
2. Hard starting
3. Lack ol power
4. Runs rough
GENERAC
C h
Spark Pluq Type Part No.
Resistor Plug
AIR CLEANER MANTENANCE:
Vrbration
Overheating
High oi consumption
472341
RC t2YC
5 .
6.
1 .
WARNING: NEVER OPERATE ENGINE WITH AIR
CLEANER ASSEMELY OR AIR CLEANER CARTRIDGE
REMOVED. FIRE MAY RESULT.
A properly 5erviced air cleaner protects lnternalpa(s of the
enginefrom dlrtand dun pa.tic es in the air lf aircleaner instruc-
Note: What appears to be an engine malfunction may be
a fault of the powercd equipment Bthet than the engine.
lf equipment is susped, see equipment atlecting engine
Figurc 1-4, Clean lnhke Sqeen & Oil Coolet Fins
SET PLUG GAP AT 0.76 mm
t - 3