TRAC Daelim Hawk Olympic Clipper Service Manual page 66

ENGi. N E. LAC KS;
. .
;, :
.
Lightly
1,
accelerate engine
increases
Engine speed
I
Check ignition timing
2.
Correct'
Test cylinder compression
3.
Normal
for
Check carburetor clogging
4.
Not clogged
5 .
Remove spark plug
Not fouled or discolored
6.
Check if engine overheats
I
Not overheated
I
Try a
7. pi
r d acceleration or
run at high speed
Engine does not knock
1 1 - 2
. . POW.ER
.
' � : · : . : \ . . : ... : : · . '
:
. · ·
·
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sp_e.ed
'J:: n gi �
�'
increase sufficie�t�y
Too low
Too High
Clogged
Fould or
Overheated
Engine knocks
Probable Cause
o e not
9. 5, (
----�- --�
(2)
{3) cl�gg�d
_
(4)
(2)
( 1 )
(2)
(3)
(4)
( 1)
( 1}
. , : ,
. . '
·
· . · .·
l) Cl(jgged:air cleaner
·
•
,
Re�tricted, fuel,,flo':';
p . • . � .
c
·
f�el ta�k � reather
_
Clogged muffler
Faulty CDI unit
Faulty pul � e .generat9r
om
W
cylinder o r piston rings
cylinder head
Blown gasket
cy1inder
in
Flaws or cylinder
head
faulty
or deteriorated reed valve
Carbon build-up in combust ion
chamber
Carburetor not serviced frequent·
ly enough
l
P
ug not serviced frequently
enough
Use of plug with improper heat
(2)
range
Worn cylinder or piston
(1)
air
Fuel mLxture too lean
(2)
Use of improper grade of fuel
(3)
(4)
Excessive carbon build-up in
combustion chamber
(5)
Ign ition timing too advanced
Excessive carbon build-up in
(1)
combustion chamber
Use of improper grade
(2)
Clutch slipping
(3)
air
Fuel mixture too lean
(4)
·
ciff�el
. .