Group Ii. Electrical System; Troubleshooting Guide - Bolens QS Series Service Manual

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GROUP II: ElECTRICAl SYSTEM
QS, QT
&
1900 SERIES
Page 2-1 REV. 12/78
TROUBLE SHOOTING GUIDE
PROBLEM PROBABLE CAUSE REMEDY
Starter Motor does not
1. Attachment drive engaged. 1. Disengage PTO.
energize and solenoid
does not click.
2.
Brake pedal not depressed.
2.
Depress brake pedal.
3.
Corroded or loose electrical solenoid
3.
Clean and tighten Red/White
connections. wire at solenoid.
4. Inoperative switches· Attachment 4. Check and replace if neces·
drive, brake and key switch. sary. (Refer to switch test·
ing.)
5.
Inoperative key switch.
5.
Check and replace if neces·
sary. (Refer to solenoid
testing.)
6.
Defective key switch.
6.
Check and replace if neces·
sary. (Refer to ignition
switch test.)
Starter Motor does not
1. Discharged battery. 1 . Charge battery.
energize but solenoid
clicks.
2.
Corroded or loose electrical connections
2.
Check solenoid or starter.
on solenoid, or starter.
3.
Inoperative solenoid.
3.
Check and replace if neces·
sary.
Engine cranks slowly. 1. Weak or discharged battery. 1. Check battery, charge or
replace if necessary.
2.
Corroded or loose electrical connections
2.
Clean and tighten.
at battery.
Battery discharges 1. Low water level. 1. Check and refill.
rapidly.
2.
Inoperative battery.
2.
Check and replace if neces·
sary.
Battery will not 1. Corroded or loose battery cables. 1. Clean and tighten.
charge.
2.
Inoperative battery.
2.
Replace battery.
3.
Inoperative diode or rectifier/regu Ia tor. 3. Check diode and replace if
necessary. Check rectifier/
regulator by substitutions.
(Refer to diode test.)