Johnson Service Bulletin #504 (1955) - RD-17 Pilot Shaft and Housing Assembly

Issued October 11, 1955, this factory bulletin replaces the original RD-17 pilot shaft and housing components with assembly #376591. It identifies the superseded parts, lists the replacement assembly's individual components, and explains that the new construction makes the assembly more substantial.

Johnson Service Bulletin letterhead
SERVICE BULLETIN #504 - MODEL RDOctober 11, 1955
Subject:   #376591 Pilot Shaft - Lower Housing and
          Screw Assembly Model RD-17 Series
Original Johnson factory drawings of pilot shaft, housing port and housing star

Please refer to page 16 of the RD-17 and RDL-17 (Page 18 RDE-17 and RDEL-17) Parts Catalog - items 86 (#303906) pilot shaft, 52 (#303914) housing port and 64 (#303915) housing star have been declared obsolete for the RD-17 series and superseded by assembly #376591.

If either of the above parts are required in detail for service repair, order assembly #376591 at $5.00 each list. #376591 assembly consists of -

1#304445Pilot Tube
1#304446Housing - Port
1#304447Housing - Star
2#304452Screws
2#302285Lock Washers

(Note - Once #376591 assembly has been installed on the RD-17 series, above parts may be ordered in detail as listed.)

Reason for change in construction - to make the assembly more substantial.

Please note - mark your parts catalogs for the future reference.

Very truly yours,
JOHNSON MOTORS
Arvid Olson
Arvid Olson
Manager - Service Promotion
sew
Superior Service Spells Satisfaction

Parts supersession

For Johnson RD-17 series, pilot shaft #303906, housing port #303914, and housing star #303915 were superseded by assembly #376591. The bulletin references the RD-17 and RDL-17 parts catalog page 16, and RDE-17 and RDEL-17 page 18.

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