Service Bulletin

Customer Bulletin

Commercial Products

Rotaries #05-15

Keeping Engine Compartment Clear of Debris

Product: GM5900 December 4, 2009

Affected Units:

Models:

31598

31599

Serial Numbers:

280000101 - UP

Situation:

Depending upon the operating conditions, chaff and debris may accumulate in certain areas in

and around the engine area under the hood of Toro Groundsmaster products. As this debris

accumulates, there is always the possibility that it may come in contact with hot surfaces such

as the exhaust manifold, turbocharger, muffler, etc. Chaff buildup around hydraulic components

can “insulate” them and not allow the component to receive adequate air circulation for cooling.

Buildup of chaff and debris can become soaked with water from rain or machine cleaning and

can corrode or rust metal surfaces in the area under and around the accumulated chaff. If the

wet chaff is sitting on electrical connectors, the moisture can wick its way into connectors and

corrode terminals.

Instructions:

Cleaning chaff and debris from around the engine area is a good maintenance practice that

must be completed on a periodic basis. The frequency of the cleaning will depend upon the

amount of product use and mowing conditions. As the engine oil is checked at the start of each

day, a quick look around the engine compartment and subsequent cleaning (as required) should

be performed.

Safety Awareness:

A collection of chaff and debris in and around the area described may ignite if allowed to

accumulate close to the muffler or exhaust manifold; this could lead to potential personal injury.