SUBJECT: (a) New test wheel for all 40 h.p. engines;
(b) Modification of test wheel #378088 for use on
RK series engines.
(a). Introduction of the ELECTRAMATIC gearcase on the 1962 - 40 h.p. model RK series engines necessitated a slightly modified hub in the 40 h.p. test wheel to provide clearance between the gearcase head and the wheel's hub. Figure 1 illustrates the new test wheel, part #378566, which supersedes test wheel #378088. It is also used on 40 h.p. engines prior to the RK series. Note that the hub has been recessed (about 1/8 inch) to provide the necessary clearance mentioned above.
The price of test wheel #378566 is $4.75 net, F.O.B. Galesburg, Illinois. Order from:
OUTBOARD MARINE CORPORATION PARTS DEPOT
P.O. Box 470
GALESBURG, ILLINOIS
DO NOT ORDER FROM THE FACTORY OR YOUR PARTS DISTRIBUTOR.
(b). The old style test wheel, part number 378088, can be modified to provide clearance for use on the RK series as well as earlier 40 h.p. engines.
- Measure the outside depth of the wheel's flange at point "A", figure 2.
- Machine 1/8 inch (.1250"), as illustrated, off the measurement obtained.
This modification retains the feature of the bronze hub being flush with the flange. Those who wish may machine 1/8 inch off the bronze hub only and retain the existing dimension of the flange. The flush machining operation is, however, easier and is just as satisfactory.
Service Department
WWD:eb
NOTE: Post on your RD (40 h.p.) & RK indexes.