Trouble Shooting - Kohler K482 Service Manual

TROUBLE SHOOTING

CONDITION
Hard S t a r t i n g o r Loss o f Power
A.
B. O v e r h e a t i n g
C. B a c k f i r i n g
D. Occasional " S k i p " a t H i g h Speed
E .
O p e r a t i n g E r r a t i c a l l y
F. Engine W i l l N o t I d l e
POSSIBLE CAUSE
1 . F a u l t y I g n i t i o n .
Loose o r grounded h i g h t e n s i o n
a .
p o i n t l e a d s .
b. Improper b r e a k e r p o i n t gap and t i m i n g .
c. D e f e c t i v e b r e a k e r p o i n t s .
d . F a u l t y spark p l u g o r i m p r o p e r gap.
e. F a u l t y condenser o r c o i l .
2. F a u l t y Fuel System.
a . Gasoline n o t g e t t i n g t o c a r b u r e t o r .
1 . D i r t o r gum i n f u e l l i n e .
2. Fuel pump f a u l t y .
Dirt
b . i n c a r b u r e t o r .
c . C a r b u r e t o r improper1 y a d j u s t e d .
1. I n s u f f i c i e n t a v a i l a b l e c o o l a i r .
2. D i r t y a i r i n t a k e screen, shroud o r c o o l i n g f i n s .
3. Improper f u e l .
4. Fuel m i x t u r e t o o l e a n .
5 . Improper i g n i t i o n t i m i n g .
6 . Engine overloaded.
7 . T i g h t t a p p e t c l e a r a n c e .
.
1 Fuel m i x t u r e t o o l e a n .
2 . Improper t i m i n g .
3.
V a l v e " s t i c k i n g " .
1. Spark p l u g gap t o o w i d e .
lmproper c a r b u r e t o r s e t t i n g o r l a c k o f f u e l .
2.
3. Wrong t y p e spark p l u g .
4. Improper t i m i n g .
1. Clogged f u e l l i n e .
2.
Water i n f u e l .
3 .
F a u l t y choke c o n t r o l
4. Improper f u e l m i x t u r e .
5 . Loose i g n i t i o n c o n n e c t i o n s .
6 . A i r l e a k s i n m a n i f o l d o r c a r b u r e t o r connections.
7 . Vent i n gas cap plugged.
8. Fuel pump f a u l t y .
1 . Improper c a r b u r e t o r i d l i n g a d j u s t m e n t .
2. C a r b u r e t o r clogged.
Spark p l u g gap s e t t o o c l o s e .
3 .
4. L e a k i n g c a r b u r e t o r o r m a n i f o l d gaskets.
or b r e a k e r
Use recommended spark p l u g .
.