Kohler K482 Service Manual page 35

3 . C a r e f u l l y guide m a g n e t o g e a r i n t o e n g a g e m e n t with c a m g e a r - - m a k e s u r e m a r k r e m a i n s
c e n t e r e d a n d m a g n e t o g e a r r e m a i n s s t a t i o n a r y when i n s t a l l i n g .
h o u s i n g with two c a p s c r e w s .
4 . T o c h e c k f o r p r o p e r t i m i n g , r o t a t e engine by hand u n t i l a loud c l i c k is h e a r d - - a t t h i s
i n s t a n t the DC m a r k on flywheel should be j u s t p a s t the c e n t e r of the t i m i n g s i g h t hole on
e n g i n e .
F o r p r e c i s i o n t i m i n g of the ignition s y s t e m u s e t i m i n g l i g h t .
i n s t r u c t i o n s .
N e v e r c o n n e c t b a t t e r y t o m a g n e t o a s this will d a m a g e windings.
a s follows:
1. S t a r t e n g i n e and r u n a t 1200 R P M .
A i m t i m i n g l i g h t into s i g h t hole on engine.
2.
a s l i g h t f l a s h e s .
p o s i t i o n of m a g n e t o u n t i l S P m a r k is c e n t e r e d - - o n L P G f u e l e d e n g i n e s it i s p e r m i s s i b l e to
i n c r e a s e a d v a n c e s l i g h t l y - - o n t h e s e e n g i n e s the S P m a r k c a n b e s e t s l i g h t l y t o the l e f t of
c e n t e r ( f a c i n g f r o n t of e n g i n e ) when the light f l a s h e s .
s e c u r e m a g n e t o flange c a p s c r e w s .
SHIELDED MAGNRTO (FAIRBANKS-MORSE FM-XE1-2B44)
T h e s h i e l d e d t y p e of m a g n e t o c a n b e identified b y the l a r g e m e t a l end c a p a n d s c r e w type t e r m i -
n a l s . T h e s e m a g n e t o s a r e p r e l u h r i c a t e d d u r i n g a s s e m b l y a n d n o r m a l l y r e q u i r e no f u r t h e r l u b r i c a t i o n .
A f t e r e a c h 5 0 0 h o u r s of o p e r a t i o n , the e n d c a p should b e r e m o v e d and the condition of the contact
points and c a r b o n b r u s h should b e checked.
c o a r s e cloth. If s l i g h t l y p i t t e d , d r e s s with s m a l l t u n g s t e n f i l e o r a fine stone.
points m u s t h e r e p l a c e d .
The c a r b o n b r u s h in the end car, should b e u n d e r s l i e h t o r e s s u r e and should move f r e e l v in i t s
h o l d e r . R e p l a c e b r u s h if unevenly o r e x c e s s i v e l y worn.
b r e a k e r c o n t a c t s :
1. To r e m o v e b r e a k e r a r m , r e m o v e b r e a k e r a r m t e r m i n a l s c r e w (which r e l e a s e s c o i l , con-
d e n s e r a n d g r o u n d l e a d s and b r e a k e r a r m s p r i n g ) then r e m o v e s n a p r i n g on f u l c r u m pin
a n d l i f t b r e a k e r a r m off pin.
2. To r e m o v e c o n t a c t s u p p o r t b r a c k e t , r e m o v e two locking s c r e w s (including l o c k and p l a t e
w a s h e r s ) t h e n r e m o v e b r a c k e t f r o m b e a r i n g s u p p o r t .
3 . R e v e r s e p r o c e d u r e t o r e p l a c e c o n t a c t s u p p o r t a n d b r e a k e r a r m .
a f t e r r e p l a c e m e n t .
T o a d j u s t c o n t a c t point gap u s e the following p r o c e d u r e :
L o o s e n the two locking s c r e w s on c o n t a c t s u p p o r t .
1.
2. I n s e r t s c r e w d r i v e r b l a d e i n h o r i z o n t a l s l o t on s u p p o r t then s h i f t s u p p o r t (pivot blade
b e t w e e n two s m a l l b o s s e s ) u n t i l p r o p e r c l e a r a n c e of , 0 1 5 " ( m a x i m u m opening) is m e a s u r e d
b e t w e e n c o n t a c t s .
s u p p o r t h a s b e e n s e c u r e d .
Magnetos a r e t i m e d t o the engine i n the f a c t o r y and r e t i m i n g should not be n e c e s s a r y u n l e s s m a g -
neto h a s b e e n r e m o v e d f o r reconditioning.
a r d type m a g n e t o t o the engine.
1. U n c o v e r t i m i n g s i g h t hole on blower housing of e n g i n e .
m a r k on f l y w h e e l i s c e n t e r e d in s i g h t hole.
2. T u r n m a g n e t o g e a r i n c l o c k w i s e d i r e c t i o n (when f a c i n g g e a r e n d ) until i m p u l s e coupling
t r i p s - - l o u d c l i c k will b e h e a r d .
wise d i r e c t i o n ) o n g e a r until i t d r a g s lightly and r e m a i n s in s t a t i o n a r y position.
3 .
P l a c e new g a s k e t on flange t h e n while holding g e a r in t i m i n g position a t t a i n e d i n Step 2 ,
c a r e f u l l y guide m a g n e t o g e a r i n t o e n g a g e m e n t with c a m g e a r .
4.
A f t e r s e c u r i n g m a g n e t o to h o u s i n g , t e s t b y t u r n i n g f l y w h e e l in c l o c k w i s e d i r e c t i o n until
i m p u l s e coupling t r i p s (loud c l i c k ) - - D C m a r k o n f l y w h e e l should b e j u s t p a s t c e n t e r m a r k
in s i g h t h o l e .
T o a d j u s t , l o o s e n two c a p s c r e w s o n m a g n e t o mounting f l a n g e and s h i f t
If the points a r e d i r t y , c l e a n with l a c q u e r t h i n n e r and
D i s c a r d old b r e a k e r a r m .
L o c k s u p p o r t i n p l a c e with two c a p s c r e w s then r e c h e c k c l e a r a n c e a f t e r
Use the following p r o c e d u r e f o r i n i t i a l t i m i n g of the s t a n d -
A f t e r coupling t r i p s , b a c k up s l i g h t l y ( t u r n i n c o u n t e r c l o c k -
S e c u r e m a g n e t o t o g e a r
C a r e f u l l y follow l i g h t m a n u f a c t u r e r ' s
S P m a r k should b e c e n t e r e d i n s i g h t hole j u s t
When p r o p e r t i m i n g i s a t t a i n e d ,
U s e the following p r o c e d u r e t o r e p l a c e
T u r n engine o v e r b y hand until DC
T i m e m a g n e t o ignition
Badly p i t t e d c o n t a c t
Gap m u s t be a d j u s t e d