Garden Tractor Forums banner
1 - 1 of 1 Posts

DR. Bolens
19,083 Posts
Over the years many garden tractor manufactures used these Delco Remy starter generators & Regulators so I figured I would do a little write up on taking care of your Regulator and Starter to prolong its life and keep your machine running trouble free.

There were two common types of starters. A "stubby" one and a longer starter which was most common. There were also different versions of bearings used. Some had all ball bearings and others had a bearing near the pully end and a bronze bushing on the other end.

Automotive tire Motor vehicle Rim Bicycle part Automotive wheel system

Long starter w/ bushing above
Approx 7'' end to end on the main base with slotted screw

Automotive tire Motor vehicle Bumper Automotive fuel system Automotive exterior

Stubby version w/ dual ball bearing above
Approx 6'' end to end on the main base with slotted screw
Basic Operation:

Starter/Generator- Pretty simple this is the unit that when activated by the solenoid turns your engine over to start once the engine is running the generator aids in keeping your battery fully charged.
Basic components include Brushes,armature,field coils

Motor vehicle Product Automotive tire Tool Font

Voltage Regulator- This regulates the amount of current/voltage that the starter/generator puts out.

This is critical to ensure your battery does not overcharge or undercharge. The insides consist of windings,temperature strip & contact sets that are spring loaded (Almost like a points and condenser)

When the starter is running the contacts repeatedly open and close in sequence depending on the voltage needed back to the battery
These can be adjusted and serviced if overcharging is encountered(See the wisconsin repair manual for proper procedures, a few different styles were used)

Motor vehicle Organism Font Parallel Art

Do's and Donts:

*Always use a good battery! Do not use a battery that is dead or jump start a dead battery. These Starter/Generators are designed as a maintainer charger only and are not meant to bring a dead battery back to life on a regular basis! Many people end up ruining their starters because of this!

* It is normal for these to be hot to the touch , being a sealed unit these have an operating temperature of about 300 to 350 degrees!

*Let the parts warm up before making a reading/Adjustment! The delco service manual states starter and regular need at least 15 minutes to get to operating temperature.

* Check voltage output frequently especially on models without a ammeter, On a voltage meter you should get a reading between 12.2 to 13.9 volts MAX, anything over 14 volts on a constant basis leads to over charging and makes your generator run hotter making parts wear out faster.

A simple cleaning and adjustment of your regulator can often correct many issues you may experience with charging.

* Do not crank longer than 30 seconds at a time, this also will severely damage your starter over time.

* If you have the bushing starter keep it oiled! These have a felt wick that was soaked in oil from the factory and when serviced by a shop.
a few drops every now and then is fine do not over oil.

*All extra accessories such as lighting must be attached to the "L" terminal of the regulator

* Keep all contacts clean

*Keep the battery clean

For more detailed information on the principles of operation of the Regulators see this link below which is a 1 page sheet on the Basic Principles of Operation of the Delco Remy Regulators

To help Identify what terminals are what here is a picture I found of a NOS regulator with instructions
Product Rectangle Font Material property Handwriting

Hopefully this helps clear things up. If you are uncomfortable doing the repairs yourself look for a local electrical shop they often can bench test both regular and starters to determine what is faulty if you are not sure.

Delco Also does a decent job of stocking parts for these and most parts are readily available!

  • Alc, IamSherwood, tom631 and 20 others have said thanks
1 - 1 of 1 Posts