Johnson service bulletin archive / Dealer Letter #141

1966 Johnson 100 HP V4ML-12 15-Inch Transom Conversion Kit Warranty Warning

Johnson Motors warned dealers against aftermarket kits intended to adapt the 100 HP V4ML-12 outboard to 15-inch transoms. Factory evaluation identified possible shaft-alignment, Electramatic wiring, cooling, sealing and gearcase problems. Johnson stated that modifying a motor immediately voided its warranty.

Original Johnson Motors red Dealer Letter letterhead

May 2, 1966

Dealer Letter #141

Gentlemen:

We have received some inquires concerning 100 h.p. modification kits designed to make the V4ML-12 Johnson motor usable on boats with 15 inch transoms.

There are some of these modification kits on the market which have been rather widely advertised.

So we can answer inquires regarding these kits we have obtained samples and have requested Engineering to evaluate them. A study of their report indicates that the use of such kits would quite possibly cause trouble with shaft alignment, Electramatic wiring, power head cooling, sealing and possible loss of the gearcase.

This Dealer Letter is sent to you to advise you that the warranty on any motor so modified is immediately voided.

Protect your customers and yourself and use only factory approved parts and accessories.

Cordially

Original factory signature block

LWE:eb