Service Bulletin

Page 3 of 6
Customer Bulletin
Commercial Products
General #05-02
Fuel Filter Life and Diesel Fuel Contamination
Product: All diesel powered Toro products July 15, 2007
Affected Units: Models:
ALL
Serial Numbers:
ALL
Situation:
Premature clogging of the filter is usually the first indication of problems with fuel quality or
cleanliness. However, fuel quality and cleanliness is rarely considered when diagnosing a
problem. Once a fuel filter problem occurs, technicians assume there is a machine related
failure.
The fuel filter has done its job if the filter clogs.
The purpose of the filter is to stop contaminants
from being introduced into sensitive precision fuel system components.
Fuel contamination is an everyday hazard. Many factors are involved, such as biological
contamination, water / condensation and debris ingress. To ensure fuel system longevity, Toro
fuel systems filter fuel to the highest standard recommended by the engine manufacturer.
Clogged filters can lead to the perception of lesser performance when in reality the filter
performs as designed.
Given all the factors discussed, maintenance technicians and supervisors are often looking for a
way to extend filter life.
Information:
The following articles have been attached for additional information and reference:
Technical Service Bulletin 95-1R1
, Filter Manufacturers Council
General 03-05
, Toro Service Bulletin
Although Service Bulletin General 03-05
refers to a biodiesel conversion, the kits described in
the bulletin have the added advantage of larger filters and stronger fuel pumps. Installation of
this kit can help extend fuel filter service intervals over the original filtration system. Kits should
only be installed on recommended machines. The addition of available kits is considered a
maintenance accessory and is at the option and expense of the owner.