Installation Instructions

9 ELECTRICAL SYSTEM B1700·B2100·B2400 WSM,11770
SERVICING SPECIFICATIONS
STARTER MOTOR
Item Factory Specification Allowable Limit
Mica
Undercut
0.5t01.0mm 0.2mm
0.020 to 0.039 in.
0.0079 in.
ALTERNATOR
Slip Ring
O.D.
14.4 mm 12.8 mm
0.567 in.
0.504 in.
Brush
Length
10.5 mm 8.4mm
0.413 in.
0.331 in.
CHECKING, DISASSEMBLING AND SERVICING
A CAUTION
.. To avoid accidental short circuit, be sure to attach the positive cable to the positive terminal before the
ground cable
is attached to the negative terminal.
III IMPORTANT
CD If the tractor is to be operated for a short time without battery (using a slave battery for starting), use
additional current (lights) while engine is running and insulate terminal of battery. If this advice is
disregarded, damage to alternator or dynamo and regulator may result.
III NOTE
CD In this section, when measuring resistance, voltage and amperage, leads of ohmmeter, voltmeter and
ammeter are represented by - marks in figure.
[1] BATTERY
CHECKING
,--F_ac_to_ry_s_pe_c_. I_Le_s_s t_h_an_0_.1_V _
Battery Voltage
1. Stop the engine and turn the main switch off.
2. Connect the COM (-) lead of the voltmeter to the battery's
negative
terminal post and the (+) lead to the positive
terminal post, and measure the battery voltage.
3. If the battery voltage is less than the factory specifications,
check the battery condition.
(See the next page.)
More than 12 V
Factory
spec. Battery voltage
Battery Terminal Connection
1. Turn the main switch on, and turn on the head light.
2. Measure the voltage with a voltmeter across the battery's
positive
terminal post and the cable terminal, and the
voltage across the battery's negative terminal post and the
chassis.
3. If the measurement exceeds the factory specifications, clean
the battery terminal
posts and cable clamps, and tighten
them firmly.
0309F091
9-S4