Electric Starting Motors; Starter Removal And Installation; Starting Motor Precautions; Troubleshooting Guide – Starting Difficulties - Kohler CH940-CH1000 Service Manual

Electric Starting Motors

Engines in this series use solenoid shift starters. A Delco-Remy solenoid shift starter is typically used.

Starting Motor Precautions

NOTE: Do not crank engine continuously for more than 10 seconds. Allow a 60 second cool down period between
starting attempts. Failure to follow these guidelines can burn out starter motor.
NOTE: If engine develops suffi cient speed to disengage starter but does not keep running (a false start), engine
rotation must be allowed to come to a complete stop before attempting to restart engine. If starter is engaged
while fl ywheel is rotating, starter pinion and fl ywheel ring gear may clash, resulting in damage to starter.
NOTE: If starter does not crank engine, shut off starter immediately. Do not make further attempts to start engine until
condition is corrected.
NOTE: Do not drop starter or strike starter frame. Doing so can damage starter.

Starter Removal and Installation

Refer to disassembly and reassembly for starter removal and installation procedures.
Operation – Solenoid Shift Starter
When power is applied to starter electric solenoid moves drive pinion out onto drive shaft and into mesh with fl ywheel
ring gear. When pinion reaches end of drive shaft it rotates fl ywheel and cranks engine.
When engine starts and start switch is released starter solenoid is deactivated, drive lever moves back, and drive
pinion moves out of mesh with ring gear into retracted position.
Troubleshooting Guide – Starting Diffi culties
Problem Possible Fault
Starter
Does Not
Energize
Starter Switch
or Solenoid
Brushes
Starter
Energizes
but Turns
Slowly
Transmission
62 690 01 Rev. C
1. Check specifi c gravity of battery. If low, recharge or replace battery as
Battery
necessary.
1. Clean corroded connections and tighten loose connections.
Wiring
2. Replace wires in poor condition and with frayed or broken insulation.
1. By-pass switch or solenoid with a jumper wire. If starter cranks normally,
replace faulty components. Remove and perform individual solenoid test
procedure.
1. Check specifi c gravity of battery. If low, recharge or replace battery as
Battery
necessary.
1. Check for excessively dirty or worn brushes and commutator. Clean
using a coarse cloth (not emery cloth).
2. Replace brushes if excessively or unevenly worn.
1. Make sure clutch or transmission is disengaged or placed in neutral.
This is especially important on equipment with hydrostatic drive.
Transmission must be exactly in neutral to prevent resistance which
or
could keep engine from starting.
Engine
2. Check for seized engine components such as bearings, connecting rod,
and piston.
KohlerEngines.com
Electrical System
Correction
43