Timing fixtures

[regnibe]

Hi,
Can someone tell me what motors these timing fixtures are for?
Approximate diameters are indicated.
Some legible numbers are stamped on:

1. .656
2. .843 (304668)
3. .843
4. .906 (386636)
5. .968 (304688)
6. 1.093 (309173)

Appreciate your help!
J. Regnibe

[RICHARD A. WHITE]

I have the tapered plug gages, but those being OEM tools they have no taper
#1 is for the 3-4 hp, that is easy.

Your #6 is either for the 28-40hp 1962 and up OR, it may be for the 1976 35 hp and 40 hp from 1974-1976 depending on where the "T" and "B" are stamped in relation to the key way

I have taken over for Frank Robb who started making reproductions of these exact tools. He went the extra mile by making ALL of his with the correct tapered bore so they fit better on the crankshaft. I continue that tradition.

The others are more difficult

http://www.richardsoutboardtools.com
classicomctools@gmail.com

[ed-sam]

My Special Tools Instruction sheet lists this
pn 383603 3 & 4 hp engines
pn 383602 all 5 thru 20 (except 1974 and later 9.9 an 15) & 1969 and later 25 hp
pn 386636 all 9.9 & 15 1974 and later
pn 383601 all 22 thru 40 thru 1961
pn 378966 all 28, 33, & 40 hp 1962 thru 73
pn 386635 all 40 hp 1974 and later
print date 2/78
now you know.
Ed

[RICHARD A. WHITE]

Thanks Ed, but I notice the numbers on his are the original numbers and your numbers are later.
I gather that they superseded from his numbers to yours?

I see he has
308773
304X88
38063X…

man that is going to be cornfusing…lol

http://www.richardsoutboardtools.com
classicomctools@gmail.com

[garry-in-michigan]

Having problems with my Walagata account – other wise I would post the Test prop numbers as of 1962 . . . 🙄

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