June 9, 1961
Bulletin No. SB-851
Accessories
SUBJECT: Radio interference suppression kits;
35, 40, 50 & 75 h.p. magneto equipped engines.
In response to the many inquiries about radio interference suppression kits, we're
happy to announce that these are now available for the subject engines.
These kits have been in development for approximately two (2) years and have been
sufficiently field tested to verify their effectiveness.
The part numbers of the kits, and engine usage, are as follows:
ENGINES KIT NO. DESCRIPTION
35 & 40 h.p. 378484 Magneto radio suppression kit
50 & 75 h.p. 378486 Magneto radio suppression kit
35, 40, 50 & 75 h.p. 378487 D.C. Generator radio suppression kit
Note that kits 378484 and 378486 are for suppressing only magneto ignition noises.
Thus, on engines which are operated without generators, only one (1) kit is
required. Kit 378487 suppresses generator noises and is used in addition to magneto
suppression kits only on those engines having d.c. generators installed.
Installation instructions are included in each kit. Be sure to study these prior
to proceeding with the installation.
The kits are available from your parts distributor at the following list prices
which are subject to the standard accessory discounts. Prices are subject to change
without notice.
KIT NO. UNIT PRICE
378484 $ 10.00
378486 29.50
378487 17.75
A suppression kit for the alternator equipped engine is not yet available, and
will be announced in a later bulletin as soon as it becomes available.
JOHNSON MOTORS
W. W. DeWees
Service Department
WWD:eb
NOTE: Post on your RD (35 & 40 h.p.) V-50 & V-75 indexes.