Kohler K361 User manual

PHONE: (A REA 414) 547-5558
547-5557
,
lEER I NG
P.O. E,OX 284
EAST ELLIS ST
WAU J< ESHA. WIS. 53186
PRO 'DUCTS
co.
1M
NO TICE
FOR OWNERS 0 (- 24 18 POW ER K .II\lGS
C on gratulati ons! Yo u ow n on e of the first production
mode ls of .a P owe r Ki ng Tract or equi.pped with an
18HP Koh rer- En g ine . V ie a r e sure y ou w ill be pl eased
w i th the per-f er-rn a ne e0 ': yo u r t ractor .,
We ot r-ect .you r- atten tio n to t he se t ting of the id le sp e ed
on trac tors e qu ipped with the 18H P engine. P erformance
is ma xi mi.'zed w hen id le is set at 1700 RPM . Y our; engine
has been set to th is sp eed . F o r best performance,
1"0 ?\ ! ,O t? if} th is sett i.ng u s i. 0 .9 _ 1&50 - 1750 _ .B . r:: ry ~ as a cc _Eip~ble
rang e . You ma y f ind t he idl e speed unusua 1 when compa r ed
to our other m ode ls wi th lesse r horse power . H ow ev e r,
yo u m ay rest assured opt im um performance is secured
by ma in ta ini ng th is set ti ng .

)-
cY0r~ r 't ·'{ ¥) -

K OHL ER ENGINE MODEL K361
,.
Standard equipment on the K361 includes a gear-
drive electric starter, battery ignition, 15 amp
flywheel alternator system, and an instrument panel,
together with an automatic compression release for
easy starting.
ROCKER
ARM
HOUSING
COVER
c>
SPARK PLUG
CONDENSER
OIL LEVEL
DIPSTICK\
18 HP, K361
So, let me begin by introducing our 18 HP, overr.eac
valve engine , the <~61.
The K361 is a large bore, short stroke engine ana has
the same
crankshaft height and mounting patt erns
as the engines in our 10 - 16 HP models.
It's
always exciting when you can add something
new and important to your listof products , but when
you can introduce four new state-of-the-art eng nes
at
one time ,well, that is something quite special.
Designing our new engines for industrial, constuc-
tion, and lawn and garden applications, we began,
as always, by considering what the ultimate
customer wants and needs.
NEW MODELS
Cust omers want to be comfortable when they
operate their equipment. They want durability and
d
ependability in their product. They certainly want
their equipment to be easy to service. Com fort,
durability and ease of service have always been our
quide, and the new additions to the Kohler line rieet
these ideas squarely .
We've been meeting those wants and needs lor a
long time and we find they haven't changed much
over the years.
We're
calling it our Power Play, and that's a pretty
good description of Kohler's introduction of .our
new models to our line of 4-cycle, air cooled
engines.
The primary difference in configuration is this ,ittle
box at the top of the engine which houses our
overhead valve assembly.
As Isaid, Model K361
offers an honest 18 HP in the
space that once provided 10 - 16 HP. You can
imagine the possibilities for powering-up many
applications. Basically, we're providing twin-
cylinder power in a single-cylinder engine .
The K361 is designed to draw air for combustion
from inside the blower housing , making it quieter to
run and allowing installation inside an enclosure .
Of
course ,being of overhead valve design, it has
some special advantages. It's cooler running tr an a
conventional engine. Ease of service?
This engine features the same
convenient service points as the 10 - 16 HP series.
And it has outstanding low-end torque .
Also standard on the K361 are balance geal sto
reduce the vibration to a level comparable with
Kohler's 14 and 16 HP engines. That's a big step in
adding to operator comfort.
So in the K361 we're presenting apackage that gives
you 18 HP in a tiny fraction more space that you
need for 16 HP. We're giving two-cylinder power at a
single-cylinder price . It's a smooth running, quiet,
dependable engine that we at Kohler are quite proud
of.
3

W hat the K422 iso ffering is a ter rifi c package .Aj d to
that the
high cleara nce baffl ing, gear drive elr ctric
start, pr essuri zed spray lubrication and auto rn) tive
type oil pum p and you have an engine that is quite a
value, and onewe 're proud to have in the K
ohl e line.
So t
hat's what we're offe ring as add it ions tr our
alrea
dy exte nsiv e lin e. I'm sure yo u'll agree wi i 1me
that th is is an im pr essive gr oup, a quar tet th a: will
reall y
make an im pr ession on the market.
Best of all, these are Kohler engines .
W
ith Kohl er qual ity
Ko hler durab ility
and Ko hler depe ndabi lity.
\JI~ e tak ealot of pride in our produ ct; we hope yo .J do,
too .
iNSI E THE K361
Th e K361 joins the other engines in the 10 - 16
ho rse power gro up. Th e basi c versio n i nco rpo 'ates
the "quiet", directed air features intr odu ce iby
Kohler Co . in 1973.
The K361 has a
ful l cast iron blo ck like the other
engin es in its group. The only real di ffere nce i1the
b
lock is in the cy li nde r barrel area. Si nce the v lives
are in lhe head. the
cy linder barrel is r ound wit l the
push rod
tube s on the s ide .
K3GJ RW CK WITH PU ST I ROD ru nsa
5
The in tern al co mpo nents of the K361 are litt le
c
hanged from the 14 and 16 horsepower engine s
The main
differen ces int e rnally are in the p isto n and
co nnecting rod to w iths tand highe r falces. The
co n nect ing rod is f or ged alu mi num ins tead of
diecas t. Th e piston will rem ain similar in a ppe ara nc e
to the K341
pis to n with most of the cha nges bein g on
the int ern al ribs.
The powe r and pe rfor man ce of the K361 are
pr ima rily due to the a dd ition you see here, th e
over
head valves. Th e dis p lac e ment of the K361 is
actua
lly the same as the K341 . However, th e
overhead valves imp rove the fuel-air mixing and
bu rni ng cha
rac teristics e no ugh to provide an
add itio nal 2 - horse po wer and improved "lugging"
to
rqu e.
This
clos e -up shot shows the compon ents which
make up the over head valve asse mbly. You will note
the adjust ment provis ion on the push rod end of th e
rocke r arms. The rema inin g components and
syste ms of the K361 are the same as tho se used on
the 14 and 16 h
or sepower engi nes.
INSIDE THE K422
As was stated in the ov erv iew , the K422 has an
alu
minu m cra nkcase . Her e you see the two die cast
pieces which c
omp rise the cra nkcase . By maki ng it
in two separate pieces. we are able to cast in all the
bosses and ribs required
for s tren gt h.
l<'4 22 CRANK CIlSg vi m lN TERNA!. CONPONENT S

Qty
Par t
Descr iption
No .
1 235278
Retainer
1
235 476 Bushing
1
237022
Washe r, thru st
1A-237031 Gear, governor
123
7455
Shaft, gov. cross
147 079
01
Linkage, choke
1 A-237653
Leve r, gov.
1 47 091
01
Spring gov ernor
1 2
32555
Sprin9, ad j. screw
1232556 Screw, adj .
147 126 09 Bracket , con
tro l
1 47 237 02 C
lamp
2
275690
Washer
147 090 07 Lever, choke
1 47 090 08
Le ver , thrott le
147 112 02 Spacer
IGN IT ION GRO UP
1 X-489-7
Rod, breaker
1X-728-1 C
lip, cable
1220174
Gaske t, breather
1 232535
Cove r, breaker
1
234323
Pl at e, coil
1 23504 1-S Plug, spark
1
236602 Co nn ect or
1 2
38057
Lead, hi gh te nsion
1
275 182 Clip
1 2
37878 Stator
1
47 150 01 Breaker
147 154 01 Clip
1
230722
Condenser
1 231281
Co il
148 155 02
Conn e ctor
141 403 01 Regulator -
rect if ier
1220297
Grom met
OI L PAN GRO UP
X-75-6 Plug, pipe 3/4
235057 Gasket, pan
235115 Base, oi1 pan
PIS TON AND ROD GRO UP
45 067 16
Rod, conn.-asse m. Std.
45 067 18
Rod, conn.-assem. .010 U.S.
45 074 06 Piston - ass
embl y
45 074 07 (Includes pin &retainers)
Piston - a
ssembl y (.003)
45 074 08 (Includes pin &
retainers )
Pisto n - assemb ly (.010)
45 074 09 (Inc ludes pin &retain
ers)
Piston - assembly (. 020)
45 074 10 (Includes pin &reta
iner s)
Piston - assembly (. 030)
2 235004 (Includes pin &
ret aine rs)
Retai ner ,
pisto n pin
145 lOB 01 Ring
set - Std. &.003
45 108 02 (Service )
Rin g set -.0lD (Service)
45 108 03 Ring
set -.020 (Service)
45 108 04 Ring
set -.030 (Service)
45 522 28 Short block
45 004 05 Gasket Set
45 755 06
(w it hou t seals)
Overhaul
Ga sket Set
K361QS PARTS LIST, SPEC 23104A
ENGINEERING
PRODUCTS, INC.
..--- ......-------,.---- ------ ......,
Qty
Par t
Descrip tion
Qty
Part
De sc ription
No ..
No .
AIR INTAKE GROUP
12 35025
Ga sket
1
235026
Cover, camshaft
1
X-2 76-7 n
ut , wi ng AR 23
5070
Gasket
147 0 41 02 Gasket 1
X-271-30
Seal , front oi1
1 47 082 03
Cov er, air
cleaner 1 235125-S Shaft , governor
147 083 03 Ele
men t1
235376
Bea ri ng, ba 11
1 47 032 03 Seal 1235757 Gasket, bearing plate
1 47 094 08 Base. a
ir cleaner 223
6559
Shaft
147 134 02
Tube
145 156 02 P
late, bearing
3 X-67-65 Screw,
H.C .1B
lOCK cyl inder (Use
45 522 28 Short Block)
BAFFLES AN D SHROU D GR O UP
245 316 01 Guide, valve
1 45 027 01 Housing, blower
CRA NKSHAFT GROU P
145 061 05 Baffle, side a
ir
1 45 D63 06
Ba ff le, cylinder 2
A-236507
Gear
145
l~ ~ fJ2
Ba ff le, head 145 014
OB
Crankshaft
147
755 01 Kit , spacer
BREATHER AND VEN T GROUP
2 X-269-34
Retai ner
1
231032
Sea l, b reather
CY LINDER HEAD GRO UP
1
235047
Reed, breather
1
235048
Ga sket, valve cover 1 X-352-
27
Stud
1 235631
Plate, breather 1 X-400-111 Spacer
1270146 B
aff le, breather 1
236742
Strap, l if ti ng
1275144 Gasket 5270721 Screw, H.C.
1 2
75220
Stud, valve cover 1 45 052 02 Gasket, head
1 47 050
01
Fil ter , breather 145
318 02 Head, cyl inder
1 47 096 01 Cover, valve 2 X-269-39 Cl tp , ri
ng
1 47 326 01
Hose , brea ther
7
270889
Hasher
CAI~S HAF T GRO UP DIPSTICK
GROUP
4X-269· 17 Ring,
retai ning p lai n 1
237064 Gasket
145 010 02
Camshaft
147 038 03 Dipstick
147 O
B9 01 Spri ng, actuating 147 lBO03 Tube, oil fi
11
2 45 019 01
Tappet
145 041 09 Gasket, rocker arm hsg.
ELECTRI C START GROUP
1 45 0 41 OB
Gasket, rocker arm hsg.
1 45 096 07
Cover , rocker arm hsg. 2
234948
Screw, H.C.
2 45 123 07 Tube, push rod 3/8 - 16 x 1-11/32
4 45 153 01 O-Ring push rod tube 145 098 06 St
arter
2 45 4 11 03 Rod, push 1 237367 Ki t , brush &spring
AR
2 75066
Spacer, cams haft .005
AR 275067
Spa cer, camsh aft .010 EXH AUST GRO UP
2 235011 Re ta iner, spr ing
4240013 Key 145 054 07
El bow
2 45 020 01 Spring, valve 1 45 123 10 Tube, exhau
st
1 45 016 01
Va 1ve, exhaust
145 017 01
Val ve, intake FL
YW HE EL GROUP
2230020 Rotator, valve
1 45 081 03
Hous ing, rocker arm 1X-25- 8B Was her, f lyw heel
145 144 13 Shaft , rocker a
rm
1
X- 119-14 Nut, fl yw heel
245 086 02 Screw, valve adj . 1 X-286-15
Key
2 45 186 01
Arm, rocker 1 47 025 14 Fl
yw heel - assemb ly
1 236285 Gear, ring
C
ARBURE TOR GROU P1 47 144
01
Shaft , front dri ve
1X-391-1 El
bow, hose FU
EL PUM P GROUP
2X-
770-1 Screw, sl t d. hd.
2271030 Ga
sket
2 X-426-9 C
lamp , hose
145 053 29 Carb
uretor - assembly 1X-697-1 Li ne, fuel
145 054 06 Elbow, carburetor 147 041 04 Gasket, fuel
pump
145 126 13 Bra
cket, carbo elb ow
1 47 559 03
Pump, fuel
122
1519 K it , re pair
(Includes gasket)
2 X-391-1
Con ne ctor
C RAN KC A SE GR OUP
1X-230-
11 Plug, expansi on
GO V ERNOR GROUP
1X-379-9 Sea1, rea r oi l 1
X-400 -80 Spacer
1234866 Bearing 1
231355
Pin, governor stop
SPL- 120 8. 5M 11-77 K PRINTED IN U.S
.A.

cong atulations!
Powering your equipment is a dependab le Ko hler single cylinder, 4 cycle, air-coo led engine of durahlc
cast-iron cons truc tion. The services requ ired to keep your engine dependable are minimal but it is im-
portant tll at the required services be performed at the p rescribed intervals . P lease take a fB' moment s
to read through
this manual, then carefu lly fol low all service recommenda tions to keep your engine in top
condition and to insure along, trouble-free service l ife.
generals ec·fications
This manual covers the Kohler s ingle cy li nder mode l K36 lQ ai r -coo led engines. Some general specif i-
catio ns ar e l i sted below- -refer to the appropria te service section in t his manual for specific de tai ls.
Specifica tion
K361 Specification
K36 l
Bore 3.75" Lube Oil Capaci
ty
95 .2mm
(U .S. Quarts) 2
Stroke 3.25" (Litres)
1.9
8 2.6mm Spark Plug Gap
Displacement (Standard Plug) .035
(Cubic Inches) 35.89
(Resistor Plug) .025
(C ubic Centimeters) 588.1 B reaker Point Gap
.020"
.50
8mm
Weight -App roximate (Pounds) 124
(Kilograms) 55.8
CONDENSER
OIL LEVEL
DIPSTICK
BATTERY
I ~IT I 1 ~ 0 ~ N ---"'"
COIL -
E LECTR ~C
STAAT
~OR
OILDRAIN ~
CYL INDER HEAD
DRY TYPE
~ AI R C LEANER
BREAKER
POINTS
~ STANDARD CAPACITY
OIL PAN (2 qt.)
•
FIGURE 1 - POWER T AKE OFF SIDE V IEW OF TYP ICAL SINGLE CYLINDER OVERHEAD VALVE ENGINE
2

GOVERt\lOR
ARt\1
DR Yl YP E
AIR
CLEANER
BLOWER
~ __ ------ HOUSING
FIGURE 2 - AIR I NT AKE SIDE V IEW OF TYPICAL S ING LE CYLINDER OVER HEAD V ALVE ENG INE
fuel specifications
Usc c le an f res h RE GULAR gra de of no n-l eaded gasol ine. The non-leaded (or low lea d) fu els of fer the
advantage of reducing the
amo unt of deposi t s which bu ild up in the co mb us ti on c ham ber . Do not add oi l t o
the gasol i ne. Use n
am e brand gasol ine purchased fro m popu lar s tat ions t o prevent use of s ta le gasol ine
or f
uel n ot adjusted to seasonal changes. Gasoline b ecome s sta le wi th age and tends to form gum deposi ts
which clog the f uel system especia l ly s ma l l passages in th e carbu ret or . On gravi ty feed syste ms , turn
the
fuel va lve off whenever the eng ine i s to be out of servic e for any leng th of tim e-- thi s wi ll prevent
seepage of gasol ine in
to th e engine. Keep the vent h ol e in the gas f il le r cap open--i f it bec omes plugged
flow of
fuel will be imp ai red.
safety precautions
Power mower s, garden tra ct ors , snowblowers, and o ther ma chi nes powered by air-coo le d engines have
bec
om e so co mmo np lace th at we may forget th e po te n tia ldangers involved in serv ic ing and opera tio n of
such eq
uip ment. In the i nte rest of safe ty, so me ge nera l pr ecaut ions a re pres e nte d bel ow as saf et y re-
m
inders . Re membe r th at the be st safeguard again st accide nts is the use of good co mmo n sense!
•
WARNIN G- - LE THAL E XHA UST GAS! An engine d is charges car bon mon o xi de when operat ing , wh ich causes dea th
if inh aled for even a short period of t ime--ope ra te o nly where deadly exhaust gases can be s afely dis-
sipa ted.
• WARN ING - -DANGERO US FUEL S! Use ex tre me c auti on wh en s tor ing, han dling and using fuel s- -t hey are highly
vo
la tile and expl osive in vapor s ta te . Store on ly in approved con tainers in we ll ve nti l ated area away
from spar k or flame produ cin g eq uip ment. Neve r add fu el to tank wh ile engine i s running -- stop engine
and
al lo w it t o cool thoroug hly t o prevent fu el f rom ign it ing on con tac t w ith hot part s or i gnit ion
spark. Don' t store gasol ine ins ide occup ied buildin g.
•
WARNING- -MOV ING, H OT PARTS! Imprude nt operat ion of powe r e quipme nt creates haz ar ds to l ife and l imb--
nev
er opera te wi th safety guards r em oved, keep hands , feet , c lo thing away frommo vin g and h ot parts .
Remem ber tha t an eng in e ge ts h ot w hi le running, and exhaust system comp onents get extreme ly ho t. Know
how to ma ke emergency stops --don' t al low inexperienced persons to operat e your equipment. Always dis -
connect
or remove spark plug to prevent un inte nti onal s tart ing w hi le working on equ ipme nt . Never tam-
per w ith governor set t ing t o gai n more p owe r- -the governor es ta bl is hes s afe op er ati ng l imit s. Overspeed
n
ot on ly sho rt ens engine lif e but can be extremely hazardous. Keep peop le safely away f rom the oper atin g
a
re a and be especi all y wa tc hful for c hi ldren . Stop the engine whenever you leave the equipment--do n't
al low it to id le una tt ended.
•
WARN ING - -GENERAL P RE CAUTI ONS! Hand le star t ing ba tte ries careful ly --they a re fill ed w ith a cid which can
e
at thru clot hi ng, burn skin , and cause bl indness. Keep in mind t hat a b atte ry g ives of f hi ghLy flam-
ma ble hydrogen gas whi le being charged--charge on ly in we l l vent i la te d are a. While e lec trica l energy
produced
in an engine igni t ion system may n ot be st rong enough to ca use i njury , rea ct ion to shock pro-
duced could cause you
to p ull away and in to c ont a ct w it h h ot or mov ing par ts --keep aw ay fr om igni ti on
system whi
le operat ing. Never oper at e wi thout adequ at e mu ff ler or with fau lt y exha ust sys te m- -exposure
t o excess ive n
oi se is not only t iring but can lead to imp ai rment of he arin g.
3

•• •
oper tlng Instructions
prestart checklist
• Ch eck oi l lev el b ef ore each star t -up and br ing l e vel up to, but not over , Full m ar k. (Caut ion: Do
not run eng in e when o il is b elo w th e Low m ark on th e di p stick )
• Check Cool ing Air
int ake screens and coo li ng fins and cl ean as necessary t o insure unob stru ct ed
flo w of cool ing air .
•
Ch eck Air Cleaner to make sure c ompone n ts are t igh t and properly in st al led to prevent entrance of
unfiltered ai r.
• Re p le ni sh Fu el in tan k with cl ean , fr esh supply of Regular Grade, no n-l eaded or le aded gasol ine.
•
Che ck oil lev el in dr iv en equi Fmen t to make sur e adequa te lubric ation is av ail a bl e.
•
Ch eck saf et y guards to mak e sur e al l are in place and secure.
starting procedure
For the e xact s ta rt in gprocedure for your engine, re fer to the equ ipm ent manufacturer ' s inst ruct ions .
The follow
in g procedure ap pli es t o most appl ic a ti ons .
• DIS
EN GA GE DRIVE de clutch or shift in neutral.
• SET HAND B RA KE on units so equipped.
•
TURN FUEL ON at fuel shut -o ff v al ve if so equipped.
ST
EP 1. C lo se thr ottl e to th e idl e positi on.
ST EP 2. On en gin es wi th man ual choke cont rol cl ose choke va lve wi th cold engine -- if rest artin g Ha rm engine ,
littl e or no choking req ui re d.
STEP 3. Tum igni ti on swi tc h on if unit so equipped or move key and h old in S tar t posit ion unti l engine
st
ar t s- -r e leas ed key wi l l automat ica l ly r etu rn to run po sition. With push button st a rt ing, press
and hold s
wit ch until engine s ta rts. (see preca uti ons under "St ar tin g Mo t or") .
S
TEP 4. R eturn Choke gradually to open posi ti on as en gi ne wa rms up.
stopping procedure
1. Tum ignit ion s wit ch o ff or , on eng in es so equipped, press and h ol d stop butto nunt iI e, gine
co me s to a complete halt .
service schedule
DAI LY EVERY
E VERY
EVER Y
.:: .. tH.Y *
SER VI CE
AT
nrr ER VAL S INDICATED
(PRE-START) 25 HOURS 50 HO
URS
100 H OORS
~ ...
CLEA NAIR
INT AKE
S CREEN -------------------X
C1--lECK OIL LE
VEL -- ------- -- ------- --- ------x
REP LE NISH FUEL
S UP P LY
------ -- ----- --
--- --X
SER V ICE
AIR C
LEAN ER
----------------
-- - -- --- - -----
-- -- --- ------
-----X
C LEAN
E XTE RNAL S URF ACE S OF
UN IT ---- --- ----------- -
-- -- -- ------
---- -X
C HANG E
UJB E OIL - ----------
---- -- --- -- --- -- --- ----
-- ---X
SE RV I CE
FUEL
FILT ER ---- - -- -- --- - -- - --- -- ----- -- ---
---- --_ ... ... - ---
---- ---- ---- -
----- -X
SE RV ICE OR REP LACE SP ARK
PLUGS
-- -- -
-- --- ----- --- -- --- - -- -- --- -- ---- -- -------- -
-- --X
RE P LACE
E LEME Nf -D
RY AIR
CL EANE R--- -
--- -- - - - - - - - -
-- ---- --- -----------------
--- --X
GiE CK
AND
SE RV ICE BREAKER PO INT S* ---- -- ------- - --- ---
-- -- -- -- -- --- ----- -- --
----------- - ---- ---x
G -lEC K I GN ITION TI MI N G*
--_ ... -- -- ---- -- --- --- --- - - - - - - - -
-- - -- -- - - -
-- - ---- ------ -- -----
-- --- -- - - ---X
GiECK VAL VE
-T
APPET
C LEAAANCE* -----
--- -----------------------------
-- --- ----
==== ==== === == ~===== ~
SERVI CE
CY L IND ER
HEADS * -- ----------- -
-- --- _ ... _- - - - --
----- -- --- --
--- --- -- -----
*H ave t hese s
eX'V ices
(500 ho UX»
done only by qua
lifie deng
in espeoial.i.e
-z .
NO TE:
Int e X'V als st at ed are for' good, clean operat i ng ao rul ition son
ly - -s e X'Vice
i t em sm ore
. ~ e- :: A. ~ :: Z y
(even dai ly) i f extremely dust y
Or'
di rt yaorulitionsweva il
.
4

lubrication
The llnportance of checking and changing o il at the prescribed intervals cannot overemphasized
particularl y under the oper ating cond itions usually encountered with mo st ai r -cool ed eng ine app lications .
To obtain maximum serv ice l if e, perform these services on time.
Oil Change: The oil must be changed every 2S operating ho urs und er normal conditions or more fre-
quently under dirt y, dusty condit ions . On a new engine , change oi l after the first S hours and then
at 2S hour int erva ls . Dra in oi l whi le hot f OT it fl ows more free ly thu s car ry ing away mOTe impuri ti e s.
Aft er comp leting drain ing old o il, reinstall d rain plug then remov e oil fi l ler cap and add 2 quart
(1.9 li t res) of oil to begin with--check the oi l lev el on the dipst ick before 'adding more--br ing the
level up in the s af e range b ut do not exceed the full mark. Select oil we ight and type according t o out -
side temperature.
O il Type: Use high qualit y dete rgent type oil wi th API Service Class SC, CC, SD or SE . Oil w eight
(S AE -vl scosi ty) is se le c ted according to th e anticipa ted amb i ent temperatures as sh own bel ow:
Abov e 30°F (1°C): Use SAE -30 whenever avai lab le or S AE lOW -30 or S AE 10W -40 as al te rn at es.
30° to OOF (1° to -17°C) : Use SAE -lO whe never avai l ab le or SAE SW-30 or SAE lOW-40 as al te rn ates .
Below O° F(-17°C): Use SAE 5W -20 or SAE 5W -30.
air cleaner service
The engine is equipped wi th a dry type ai r cleane r. Make sure t he a ir c leaner cover includes an ai r
cleaner sea l. Wi thout th is seal the c arburetor may be exposed t o dirt and th e ai r cl ean er cover ma y vi -
brate when eng in e is runn in g. Every 50 hours re mo ve element and servi ce by tapping elem ent li gh tl y
against flat surface to di slodge loose surf ace di r t--do not cl ean in any liqu id or b lo wout with com-
pressed a ir as this wi ll ruin filter mat er i al in the el emen t . Rep lace (with genu in e Kohler replace ment
element onl y) aft er each 100 hour s. Service el~nent more frequ ent ly und er dusty, dirty cond it ions .
COVER
~ \
~ BAS E
\
DRY ELEMENT
FIGURE 3 - D RY TYPE AIR CLEANER
5

cooling system service
Che ck air intake scr een b efor e each start -up and make sure it is clean and unobstructed. If grass
clipp ings, leaves, dirt etc. start building up on intake screen while operatin g, st op engine and clear
to prevent ov erheating . Cooling air is drawn into the blower hou sing by fins on the flywhe el and is
circul ated past coolin g fins on block and heads and i s then dis charged toward th e pow er t ake-off end of
the engine. Do n
ot ope rat e with missing cool ing shrouds as th ese dir e ct coolin g air--r emoval would re-
sul t
in improper air circulation and po ssibl e engine dama ge due to overhe ating. Clean external surfaces
of your engine occa sionally as acc um ul at ion of dust, oil can contribute to improper cool ing .
• •• •
Ignition system service
Eng in e misfire or generally poor operation is oft en caused by spark plu gs in poor condition or with
incorre ct spark gap s etting. Always clean area ar ound spark plugs before r emo ving to prev ent dirt from
getting into engine. Carefull y n ote spark plu g condi t ion as this is often a good indicator of the igni -
tion tr ouble. Plugs fail for va riou s reas ons. The porc elain insul ator may c ra ck or become coated with
oi l , carbon or other depos it s. This can ca use the high volta ge ignition impulse to pass from the center
el e ctrod e t o ground without jumping the spark gap. As an engine operat es, the ele c trodes are gradually
burned or worn away. In time, the gap bec omes so wide that the av ailabl e ignition vo lta ge cannot jump
the gap and th e engine misse s.
Oper ati on is al so grea tl y aff e cted by breaker point condi tion and ad j l~ tme n t of point gap. If point s
are burned or badly o
xidiz ed, l i t t le or no current will pass and as a result the eng in e ma y not op erate
at all, or if it does run, it is lik el y to miss particul arly at full thr ottle.
SP ARK PLUGS: Every 100 hours remove plugs, check c ondition and reset gap or replace plug if needed.
Go od o peratin g conditi ons are indicat ed if plug has li ght coat ing of gray or tan de posit. Adead whit e,
bli ster ed coa ti ng could indicat e ov erheating. A bl ack (carbon) coatin g may indic ate an "overricW' fuel
mixture caused by clogged air c le aner or improp er carburetor adjustment. Do not sandb la st , wire brush,
sc
ra pe or oth erwise s ervice plug in poor condit ion--best re sult s ar e obtained with n ew plug.
SPARK PLUG
SIZE
14mm
TYPE
III0
nno
GAP
.035
.025
TI GI-ITEN TO UE
18 - 22 ft. lbs.
HEAVY
GAUGE
#4 OR #6 GA.
BREAKER
POINTS
12 VOLT
BATTERY
+
CONDENSER
COIL
STARTER
Of---------'
Ar-IMETER
,....-----, SPARK
PLUG
AC
REGULATOR
FUSE & HOLDER
FI GURE 4 - WIR ING DIA GRAM FOR 15 AMP ALTERNATOR - BATIERY IGNITI ON S YS TEM
6

BREAKER POINTS: Points are illld er th e rec tangul ar cover on th e c arbur et or si de of engi ne . Use th efollow in g
procedure t o adjust br e aker point gap:
1. Remove br eaker poin t cov er.
2. Turn eng in e over illlt il br eak er p oints are full open--measu re gap w ith fee ler gauge. Op enin g
sh ould be .020". Adjust by lo osening gap adjust in g s cr ew th en ins ert screwdr ive r blade in
adjust in gnotch to sh if t mo veabl e plat e until .020" op enin g i s att aine d. R eti ghten gap ad-
just ing screw.
3. Ga p s etting ca~ vary (. 017 - .0 23). To ach iev e s moo thest running see timing l i ght in stru cti ons
b el ow.
Alwa ys r epl ace ba dly burned or pitt ed br eak er po int s. A ce rtalll am ount of bui ld up or met al tran sfer
o ccur s illlder normal opera ti ng c onditi ons; h ow ever, if thi s oc cur s too fre qu entl y and beco me s exces sive ,
th e condens er may be at fault . Slightl y pitted po int s can be dre ssed do wn wi th a point file, al though
th i s should be done on ly as a tempor ary fi x s in ce point s may t end t o arc more re adil y af te r f ilin g. Re-
pl ace point s at fir st opportilllity af te r filing. If p oint s a re oxid ize d, rub a p ie ce of coa rse cl oth be-
tween the surfaces. Dirt y or o il y poin ts can be cl eaned with a cloth but mak e sure no p article s of lint
a re l eft between surfaces.
TIMI N G: Engines are equipped with a timin g sight ho le in either the be ari ng plat e or in t he bl ow er housing.
Two timlllg marks ar e st am ped on the fl ywhe el --t he T mark ind ic at es Top Dead Center (TDC ) whi le t he S or
SP ma rk llldicat es t he Sp ar k or Spark Run p oint which i s 200b efore TDC.
Tw o methods can be used f or timing--th etiming li ght m eth od is th e more pre ci se way of a chi ev ing
exa ct timing. The timin g li ght can be used with magn eto igniti on sy ste ms ; howe v er, a st o ra ge b att ery ma y
have to be used p er timin g light manufactur er Is instructions.
MET HOD 1 - S TA TIC TIM ING : Re mo ve br eak er point cov er and remove spark plug le ad to pr ev ent illlintention al
st ar ti ng. Rot ate eng me by hand in direction of normal rotation (cloc kw ise wh en v ie we d from blow er hou sing
end) . Point s should just b egin to break as the Smark app ear s in th e c enter of th e timi ng Si ght hol e.
Continue r ot ating eng in e unt il po in ts reach m aximum open in g. M eas ure gap wi th fe el er gauge--gap shou ld
be .020" full y open. If necess ary, loosen point gap adjustment s cr ew and readjust gap t o .020" full open.
Maximum gap se tt ing can va ry a few thousandths (.017 - .023) to a chiev e smoothe st running. Sec ur e ly ti ghten
adjust ing screw af te rtiming.
METH OD 2 - TIMING LIQIT: Several diff er ent types of timing li ghts ar e avail able--follow manu fa ctur er's
llistru ctions for type used. The fo ll ow ing timing procedure can be used wi th ~ timin g li ght s:
A. R emo ve high tension lead at spark plug--wrap one end of a short pie ce of fine wire around spark plug
t erminal. Reconnect lead to t erminal--fr ee end of wir e must p rotrude from under b oot. Ql ote: Step
A for timin g lights with alli g at or clips --s ome li ght s have sharp prongs on spa rk lead --on the se sim-
pl y push prong thru boot until it con ta ct s metal connec to r .)
B. Co nnect one timin g light lead to th e wir e th at has just been wrapped ar olIDd spark plug t ermin al.
C. Conne ct second timin g lignr-fe ad to h ot ( lIDg rounded) side of batt ery-- see timin g li ght ins t ruct ions
for bat te ry s ize , wi ring, etC:--
D. Conn ect third timing light lead to ground.
E. Ro t a te eng in e by hand until S mark v is ib le --cha lk S lin e for easy re ading.
F. S ta rt engine , run at 1200 - 1800 RP M, aim timin g li ght int o s ig ht hol e--li ght should fla sh just as
S mark is centered in sight hole or even with cent er mark on bear ing pl ate or blow er housing.
G. If timing is o ff --remove breaker p oint cover , loo se n gap adju stin g s cr ew, sh ift break er plat e until
S mark is exa ctl y c ent er ed. Reti ght en adjust lllg s cre w bef ore re pl acin g br eaker poi nt cove r.
alternator system
On e le ct r ic st art models the 15 amp al t e rna to r sy st em provides elect ric al energy to charge t he b atter y.
A sol id state rectifi er-regul ator is mounted ex te rna l ly on th e engine or on th e equipment powered by the
eng ine . The system a lso includ es an alternat or-st ator and perm anent ma gnet ring ins id e th e fl ywh e el.
These sys te ms ar e v irtu ally s ervice fr ee --the on ly requ ir ed se rv ice is an oc casiona l check t o make su re
th at all el ect r ical connect io ns are ti ght and th at wir es a re n ot fra yed or c ra cked. Check th e prec autions
to the sys te m on your engine to a void dama gin g chargin g sys te m components .
P RE CA lIT IONS- -15 AMP SY S TEM
1. Bat tery polarit y must be cor rec t . Nega t iv e ground sy st em s ar e used with Koh le r Engin es.
2. Pre vent al t ernator l eads (A C) from touching or short ing. This could perman entl y damage th e stator.
3. Disconnect leads at r ectifier--r egul ator bef ore e lec tr ic w elding is done on equi pm ent in comm on
gro lID d with eng in e.
4. Do not ope ra te for any len gth of t~ne wi thout a b att e ry in th e sys te m.
7

BATlER Y: Us e 12 v olt n egati ve battery (-t erminal ground) with amp hour r ating of at le ast 32 for be st
re sults. Wh en b att ery is in good condi t ion, each cell con tr ibutes approxim atel y 1.95 to 2.08 volt s. If
the char ge i s low and l ess than 0.05 volt di fference is noted between the cell s having the highest and
low
est re adin gs, the b att ery should be re char ged. If the differ ence is more than .0S volts, thi scould
indic at e a cra cked p late or oth er dam age which could call for repla cement of the batt ery.
A regul ator ma y be blamed for an und er charged or re p eatedly dischar ged batt ery when the fault is
ac
tuall y self-discharge caused by a build-up of corros ive acid across the top of th e batte ry. Even a
light coat in g of thi s gra yish-whit esubstance can co mp le te a cir cuit to drain and exh aust the energy in
the battery--this can be espe ci all y bad wh en moi sture is pres ent .Service as indicated in the following.
To maint
ain a batt ery in top condition, check and perform the f oll owing service s at freq uent int er-
vals:
1. Regula rl y check le v el of el e ctrol yt e-- add wat er as nece ssa ry to maint ain l evel above plates
-- do not overfi ll as this can cause poor perfonnance or early failur e due to loss of el ectro l yt e.
2. Keep
te rmin al s and top of battery cl ean. Wash with baking soda and rins e wi th cl ear wat er. Do
not
allo w soda so lution to e nte r c ells as thi s w ill dest roy the electrolyt e.
starting motor
Prec autions: In the event of a "f als e start" (engine g ets up su ffi cient speed to disengage star ter but
fail s to continue runnin g), the engine mu st be complet el y st opped before another starting att empt is
made. If th e fl~~heel is st i ll rotating ,the dri ve pinion mld ring gear will clash and be damag ed.
Limit crmlking (co
nt inuous) to a per i od of 30 seconds to prevent ov erh e ating of the starter. If crmlked
for 30 second s, start er should n ot be operat ed ag ain for 60 seconds to allow time for coolin g.
S
ta rt ing mo to rs do not require se rvice at any spe cifi c intervals. They are pre -lubric ated during
manufacture and
bru shes norm all y require attention only after ext ensiv e use--see troubl e an al y sis b elo w.
Conn ecti ons to s ta rt ing motor should be checked occasional ly t o ma ke sure th ey are tight and that leads
a
re in good condi ti on. The following pre cautions should be observed on electric st art mod els to prevent
st ar te r dama ge and /or deple t ion of battery energy.
Troub
le Nlalysis : If start er f ail s to energize, first check w ir in g, starting switch or solenoid and
condition of batt e ry. Clean or replace b adl y corroded or dirty cont acts--r eplace wires if frayed or
cracked. Bypass start switch or solenoid with
jump er wire--if start er cranks n orm all y, replac e defect ive
switch or solenoid.
If star te r turns too slowly and batt ery is in good condition, check for dirt; -
brushes or co mm uta tor . Furth er trouble anal ysis will require special te st equipment a vailable only at
authorized rep air stations.
Alignm ent : Al i gnm ent of start er pinion to ring gear is e stabli shed by the machined surface of s ta~ t e T
mounting flange on the side of th e c ylind er bl ock and through spe ci al mounting b olts. To prevent ills -
alignment and ge ar dama ge, mak e sur e the pr oper shoulder b olts are used and that the y ar e securely
ti ghtened at all times.
carburetor adi stmen 5
Carbur etors are cali brat ed in the fac tory and the main fuel system cannot be reset . If bla ck ex aaus t
s moke is noted, check th e air clean er- -an "ov errich" mixture is usu all y caused by a p oorl y se rvi ced,
Clogged
air c le aner ele ment.
If idle read ju stment b ecome s nece ssary, stop th e eng in e, then turn the IDLE fu el ad jus t in g scr ew ,
all the way in until i t bottoms lightl y--don't force it closed as th is will damage the need le valve.
For pr
elimin ary s etting, turn the IDLE 1-1 /4 turn out . For final adjustments, st art engine and all ow it
to warm. The IDLE fu el can then be set by turnin g the adjustment in until the en gin e slows down, Now
t
urn th e screw out--th e engine will regain speed at fir st and then it will sl ow dOhn--note the position s
of s cr ew at both se tt i ngs, then set it about half way between the two.
'governor adiustments
The governor function s to maintain engine speed under changing load conditions and al so act s as a
speed
limiti ng dev ice . Go vernors are set in th e fact ory and furth er adju stm ents should not be required
unless
linka ge works loose or becomes disconn ect ed. Readjustment should be mad e if the engine surges with
changing load or if speed drops considerab
ly l~h en a normal load is applied. Readjustment should be made
by a qual i f ied p
er son only.
8

trou Ie shooting
Wh en trou bl es occur, don't overlook s u ~ le causes which might se em too obvious to be considered. A
star
tin g problem could, for ex amp le , be at tr ib ute d simp ly to an emp ty fuel tank . The chart bel ow l ists
some co mmo n causes of engine troubles--usc t hi s as a guide t o locat e cau si ng fac to rs.
RJEL RELA T ED CA USES I GNI TION CA USE 5
on fE R CA USES
PR OBL EM
NO I MP ROPER RJEL MIX.
NO PCDR
IMP ROPER I MP ROPER PCDR
VALVE
CARBON
mVERNOR ENG INE
RJEL
FUE L
WRONG SPARK IGNITION COO LING L UB RI CATI ON C Q\lP RE SSION
PROBLEMS
BU I LD ·UP FAUL TY
OVE RLOAD ED
WILL NOT
XXXX
S
TAR T
HARD
X X XXX X
STAR TING
---
STO PS XX X X
SUD DE NL Y
LACKS
X X XX X XXX
PO
WE R
OP
ERATE S X XXX
ERRATICALL"
KNOCKS XXXX X
OR PINGS
"SKIPS" OR XX
MI SFI RE S
BACK FI RES XXX
OVERHEA TS X XXXX
storage procedure
If engine is to be out of serv ice for a conside ra ble len gth of time durin g an o ff season pe ri od, for
ex
amp le, the fol lowing procedure is rec omme nded to prepare the en gi ne for st orage.
1. Drain oi l
fr om cr ankcase w hile engine is st i l l h ot and f lu sh with c le an, li ght o il . Re fi ll
c ran kcase.
2. Dr
ain fuel t ank and carbure tor , or use a fu el st a bili zer in the gasol ine to prevent gum deposi ts
from develo
pin g in the carbu ret or and fuel lin es.
3. Cle an e xt e rio r su rface s of eng ine .
4. Spread a
li ght film of oil over any exposed m eta lSurfaces of engine that are subj e ct to cor -
ro
si on.
s. Pour tab lespoon of oi l int ospark pl ug hole, crank eng in e slow ly by hand (2 - 3 revol uti ons)
and
repla ce spark plugs .
6. S
tore in cl ean, dry place.
parts ordering instructions
In any cor re spondence regarding your engine or whe n order ing rep la ceme nt pa rt s fr om your ne ar est
Ko hl er Deal er, please repo rt th e MODEL, S ERIAL and SPEC IFIC ATI ON n umb ers as found on the nam ep la t e of
your engine. If a lett er follows the sp ecification n umb e r, make sure th at th is is al so reported. This
information t
el l s the De al er wh at engine ver sion is involved and all ow s him to quick ly locate the r ight
par t n umb er and supp ly the correct p art for your par tic u la r engine . Check the yel low pages of your t ele-
phone
direct ory under the heading: ENG INE S --gas o line for th enearest Koh l er Engine Se rv ice Ce nt er . Other
than s
ome rou tin e servic e it em s s hown on the ill u st ra ti on s, Kohl er par t numb ers are n ot l i sted in th is
manua l due to var ia ti ons found in the n umerou stypes of engine applicat ions . Do not att empt to replace
major
it ems or any items tha t ca ll for spe cia l timi ng or a djus tme nt procedures-- have this work done on ly
by a qua lif ied engine speci alist .
9

operating hour-service log
The following is provided to h el p you keep an acc umu lative record of ope rat ing hours on your engine
and
the dates req uired serv ices were perfo rmed. En ter hours to the ne ar est quart er hour .
DATE OPERATING HOURS SERVICE RECORD
RUN HOURS RUN ACCUMULATIVE DATE SERVICE DATE OPERATING HOURS SERVICE RECORD
RUN HOURS RUN ACCUMULATIVE DATE SERVICE
I
'10

11

TP-123S! 729 ULl
IG 'HLER
K OHLER CO. K OHLER , W IS CO NS IN 53044
PRINTED IN U.S.A.