Cooling System Service; Ignition System Service - Kohler K361 Owner's Manual

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cooling system service
Check air intake sc reen before each start-up and m ake sure it is clean and unobstructed. If grass
cl i ppings , leaves , dirt etc. start bui l dul g up on intake s cr een w hile operating , stop engine and· cl ear
to prevent overheating . Cooling air is drawn int o t he blower housing by f ins on the f l ywheel and is
circulated past cooling fins on block and heads and i s then discharged toward the power take-off end of
the engule .
Do
not oper at e with mi s s i ng cooling shroud s as these direct cooling air--removal would re­
sult in improper air circulation and possible engine damage due t o over heati ng. Clean external surfaces
of your engine occasionally as accumulat ion of dus t , oi l can cont r ibu te to impr oper cooling.
Ignition system service
Engine misfire or generally poor operation is often caused by spark plugs in poor condition or with
incorrect spark gap se tting. Always clean area around spark plugs before removing to pre vent dirt from
getting into engine . Carefully note spark plug condi tion as this is often a good indicator of t he igni ­
tion trouble. Plugs fail f or various reasons . The por cel ain insulator may crack or become coated with
oil, carbon or other deposits. This can cause the hi gh vol t age ign i tion impulse to pass from the center
electrode to ground without jumpUlg the spark gap .
As an
engine operates, th e electrodes are gradually
burned or worn away. In t ime , the gap becomes so wide t hat the available ignition voltage cannot jump
the gap and the engine mis ses .
Operation is also greatly affected by breaker poi nt condition and adjustmen t of point gap. I f points
are burned or badly oxidized, l i ttle or no current will pass and as a result the engine may not operate
at all , or if i t does run, it is likely to miss particularly at full t hr ot t l e .
SPARK PLUGS: Ever y 100 hours remove plugs, check condition and reset gap or replace plug if needed.
Good operating conditions are indi ca t ed i f plug has light coating of gray or tan deposit. A dead white,
blistered coating could indicate overheating. A black (carbon) coating may indicate an "overrich" fuel
mixture caused by clogged air cleaner or improper carburetor adjustment.
Do
not sandblast, wi r e bru sh ,
scrape or otherwise service plug in poor condition--bes t results are obtained with new plug .
SPARK PLUG
SIZE
TYPE
GAP
TI
Q-ITEN
TO R Q UE
14mm III 0
. 035
18 - 22
f t . Ibs .
RHIO
.025
H EAVY
GAUGE
#4
O R
#6
GA.
B R E AKER
POI NTS
-.;;:­ 12 V O LT
BATTERY
+
CONDENSER
0 1 - - - - - - - - - '
CO IL
STA R TER
Af.'METER
,..-------, SPA RK
PLU G
REG U LATOR
FUSE
&
HOLDER
FIGURE 4 - WIRING DlAG RAM FOR 15 A M P ALTERNATOR - BATIERY IGN ITI N SYSTEM
6