Hi and welcome to FixYa. I am Kelly.
Go to this site:
I note your looking for the Super Tomahawk. If you can come up with a model number I think I can find your parts manual for sure. (or at least an on-line parts list.) Also.... If you can come up with an engine number like OH120 or L90 off of the engine I can find you a manual for the engine also.
This is the list of Manuals available there:
1983 W-W Grinder Inc. Manual and Parts List Super Tomahawk 5-8-2G/C and Tomahawk 5-8-2G/M Chipper/Shredder (40 Pages)
1989 Troy-Bilt Owner/Operator Manual Junior Tomahawk Chipper/Shredder (24 Pages)
1989 Troy-Bilt Technical Manual 4HP, 5HP, & 8HP Models Tomahawk Chipper/Shredder (12 Pages)
1991 Troy-Bilt Owner/Operator Manual Junior Tomahawk Chipper/Shredder (24 Pages)
1991 Troy-Bilt Knife Kit number 1772231 (1 Page)
1992 Troy-Bilt 5HP Model Service Kit (Part Nos. 1901153 and 1901804) For Chipper/Vac (1 Page)
1992 Troy-Bilt Owner/Operator Manual 47260, 47261, 47271, 47272 Chipper/Vac (60 Pages)
1993 Troy-Bilt Sales Brochure Chipper/Vac (4 Pages)
1993 Troy-Bilt Owner/Operator Manual 47265, 47266, 47267, 47276 Tomahawk Chipper/Shredder (44 Pages)
1993 Troy-Bilt Parts Catalog 47265, 47266, 47267, 47276 Tomahawk Chipper/Shredder (16 Pages)
1994 Troy-Bilt PTO Chipper/Shredder Owners Dog Clutch Kit 1902404 (1 Page)
Hopefully your model is one of the above.
Here is link to the Parts manuals:
There are 90 parts manuals there.
Again with a good model and engine number I can probably come up with your exact manuals.
Thanks for chosing FixYa,