Service Bulletin

Customer Service Bulletin

Commercial Business Group

Workman

2100/2110 Date: 01/09/2007

Model/Serial Range: Model Number: Serial Numbers:

07253 200000001-250099999

07253TC 200000001-250099999

07277 220000001-270000699

07277TC 220000001-270000699

Subject: Engine Oil Level Increases

The vehicles listed above, used in short duty cycle operating conditions such as

frequent engine start/stop cycles, not allowing the engine to fully warm up, or prolonged

idling, may experience an increased level of engine oil due to unburned fuel collecting in

the crankcase.

If the engine oil level increases between oil change intervals, review the Causes and

Effects checklist, which was provided by the vendor and attached to this bulletin. It is

important to understand that many factors can cause oil dilution. If the oil dilution issue

is not corrected after you review and check the possible solutions on the list, an

alternative HSE (High Speed Enrichment) carburetor is available to aid in reducing or

eliminating the effects of the oil dilution issue.

Please contact your authorized Toro Commercial Distributor for further information

regarding this bulletin.

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Customer Service Bulletin Commercial Business Group Workman® 2100/2110 Model/Serial Range: Model Number: 07253 07253TC 07277 07277TC Subject: Date: 01/09/2007 Serial Numbers: 200000001-250099999 200000001-250099999 220000001-270000699 220000001-270000699 Engine Oil Level Increases The vehicles listed above, used in short duty cycle operating conditions such as frequent engine start/stop cycles, not allowing the engine to fully warm up, or prolonged idling, may experience an increased level of engine oil
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OIL DILUTION CAUSES AND EFFECTS Provided by Briggs & Stratton January 9, 2007 Oil level increase in crankcase possibilities: 1) Oil level was incorrect to start with. Too much oil was added. a. Oil level in crankcase is too high due to overfill or fuel in oil. The v-twin valley breather is very sensitive to oil level. The breather system can be overrun with excessive oil when overfilled as little as ¼" over the full mark on the dipstick.