Suzuki LT-4WD 1990 Service Manual page 185

6-7 E L E CT R I C A L S Y ST E M
S TA RT E R M OTO R I N S P ECTI O N
CA R B O N B R US H
When t h e b rushes a re wo rn, the motor w i l l be
u n a b l e to prod uce sufficient torque, and the eng i n e
wi l l be d i fficu l t to turn over.
periodica l l y, i nspect the l ength of the brushes, re­
placing them when they a re too sho rt or ch i pp i ng.
Serv i ce L i m it
CO M M UTATO R
I f the co m m u tator su rface is d i rty, sta rti ng per­
fo rmance decreases. Po l ish the com mutato r with
#400 or si m i l a r f i ne emery paper when it is d i rty .
After pol ish i ng it, w i pe the com m u tato r with a
clean d ry cloth .
Measure the com m u tator u nder-cut CD .
Service Li m it
A R MAT U R E CO I L
U s i n g a pocket tester, check the coi l for open and
gro u nd by p l aci ng p robe p i ns on each co m m u tato r
seg ment and roto r core (to test fo r g rou nd ) a nd o n
any two segments at va rious p l aces (to test fo r
open ) , with the brushes l ifted off the com mutato r
su rface.
I f the co i l is fou nd to be open c i rcu ited or g rou nd­
ed , rep lace the a rmatu re .
d efective armatu re wi l l cause the sta rter moto r to
sudden l y fa i l .
09900-25002
To p revent th is,
9 m m (0.4 i n )
0. 2 m m (0. 008 i n )
Conti n u ous use of a
Pocket teste r