New Holland LS120 Repair Manual page 39

SECTION 10 - ENGINE
9. Turn the ignition switch "ON" and attempt to start
the installed engine. Never crank the engine for
more than 30 seconds.
A
CAUTION
A
Overcranking the engine can cause starter
damage. Allow the starter to cool for five minutes
if engaged for 30 seconds.
1
o.
Allow the starter to cool for at least five minutes
before another attempt.
10-8
11 . Once the engine starts, disconnect the negative
cable from chassis ground. Then disconnect the
positive cable from the positive (
+)
terminal of the
installed battery. Do not allow cable ends to
touch.
12. Disconnect the negative (-) cable from the
booster battery. Disconnect the positive ( +) cable
from the booster battery.