l-8  OIL  SPECIFICATIONS 
Use high  quality  detergent  oil  of API  (American  Petroleum 
Institute)  service  class  SF.  Select  viscosity  based  on  the 
air  temperature  at the  time  of operation  as shown  below: 
RECOMMENDED  SAE  VISCOSITY  GRADES 
! 
I 
I 
I 
I 
I  1  I 
'F -50  6 
T  1  r  I  I 
20 
32  40  60  80  100 
t 
I  I 
T 
I 
I  I 
I 
c-30  -20  -10 
0  10  20  30  40 
TEMPERATURE  RANGE  EXPECTED  BEFORE  NEXT  OIL  CHANGE 
l 
Straight  30  weight  oil  is  preferred.  If  multi-viscosity  is 
used,  be  aware  of the  resulting  increase  in oil  consump- 
tion  and  combustion  deposits  when  used  in temperatures 
above  32’  F (0” C). 
I 
Using  other  than  service  class  SF  oil,  or  extending  oil 
change  intervals  longer  than  recommended  could  cause 
engine  damage  which  is  not  covered  by  the  engine 
warranty. 
On a new  engine,  change  the  oil after  the  first five  hours  of 
operation,  and thereafter  on  K181QS and  K341 QS change 
oil  every  25  hours.  On  KT17,  K582QS  and  L654,  change 
oil every  50  hours. 
I-9.  FUEL  SPECIFICATIONS 
For  best  results,  use  only  clean,  fresh,  regular  grade 
unleaded  gasoline  with  a pump  sticker  octane  rating  of 87 
or  higher  in  the  U.S.A.  In countries  using  the  Research 
MODEL 
CAPACITY 
35kW 
1 Quart  (0.95  Iitres) 
4.5kW  (Single) 
2  Quarts  (1.89  litres) 
4.5kW  (KT17 
Series  I) 
3.8  Quarts  (3.6  litres) 
4.5kW  (KT17 
Series  II) 
1.5  Quarts  (1.4  litres) 
5.5kW 
4  Quarts  (3.78  litres)  (Additional 
l/2  quart  (0.47  litres)  when  filter 
is  replaced) 
7kW 
4  Quarts  (3.78  litres)  (Additional 
l/2  quart  (0.47  litres)  when  filter 
is  replaced) 
7.5kW 
5  U.S.  Quarts  (4.73  Iitres) 
Unleaded  is recommended  since  it  leaves  less  combus- 
tion  chamber  deposits.  Regular  grade  leaded  gasoline 
may  also  be  used;  however,  be aware  that  the  combustion 
chamber  and  cylinder  head  will  require  more  frequent 
service. 
Use fresh  gasoline  to  ensure  it is blended  for  the  season, 
and  to’  reduce  the  possibility  of  gum  deposits  forming 
which  could  clog  the  fuel  system.  Do  not  use  gasoline  left 
over  from  the  previous  season. 
Gasohol  containing  no  more  than  10%  ethanol  can  be 
used  if unleaded  gasoline  is unavailable.  Never  use  gas- 
ohol  containing  more  than  10%  ethanol  or  gasoline  con- 
Table  1-5.  Oil  Capacity 
rating  method,  it should  be  90  octane  minimum. 
taining  methanol.  Do  not  add  oil  to  the  gasoline. 
RADIATOR  FILL 
\ 
SPARK 
PLUGS 
CRANKCASE 
A 
BREATHER 
\  /I\\ 
(HIDDEN) 
I 
CIjRBURETOR 
VALVE 
TAPPET, 
COVER 
BELTTENSION 
ADJUSTMENT 
GOVERNOR 
ADJUSTMEN 
OIL  PRE 
GAUGE 
/ 
/ 
OIL 
FILL/CHECK 
MOUNTING 
I  / 
OIL  PRESSURE 
ADJUSTMENT 
\ 
\ 
CONTROLLER 
\ 
GROUN 
FUEL 
OIL 
FUEL 
DRAIN 
STRAF 
TRAY 
SOLENOID 
PUMP 
C 
REMO’ 
CONTR 
:ONNEC 
TE 
OL 
TOR 
Figure  1-5.  Service  Side  View  of  Kohler  7500  Watt  RV  Generator  Set 
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l-5