July 12, 1963

SUBJECT:  "DIAGNOSIS AND TROUBLE SHOOTING".

Those dealers attending our service clinics in various parts of the country this past spring each received a copy of the enclosed "Diagnosis and Trouble Shooting" booklet. Reports now indicate that those who received this booklet and who have taken the time to use it as reference when diagnosing engine problems, have found it quite helpful.

In view of this it was decided that all Dealers should have a copy of "Diagnosis and Trouble Shooting", particularly those who were not in attendance at the Service Clinic. Of course, to be of any value whatsoever, "Diagnosis and Trouble Shooting" must find its way to the service shop and into the hands of the shop mechanic. Here and only here will it serve its purpose.

You will notice that nothing has been mentioned about how to eliminate or remedy any of the problems listed in the booklet. This is not its purpose. Its purpose is only to direct ones attention to areas (check points) that may cause some of the various 26 engine reactions listed within. Often times numerous check points are overlooked during diagnosis simply because the mechanic has not thought of all possible causes to the particular problem. In a sense then, "Diagnosis and Trouble Shooting" is a good reminder of things to check when seeking the answer to a particular engine problem.

The actual repair procedure for any engine malfunction listed in "Diagnosis and Trouble Shooting" should be well understood by an experienced outboard mechanic. It's possible, however, that the exact procedure for fixing one of the listed problems may not be readily understood by some and, in this case, additional reference to either the General or V4 Service Manual may be required.

Keep in mind that this booklet is designed for use in CORRECTIVE MAINTENANCE. We trust you'll put it to good use and we look forward to seeing you at one or more of our Service Clinics.

Dates and locations of the 1964 Service Clinics will be announced in the fall. Watch for this announcement in your mail.

Very truly yours,

JOHNSON MOTORSJack Penland
Service Promotion