Do you want specifically a Helm brand manual, or just any reference?
Autozone.com has online service manuals that are similar to a Chilton or Haynes book.
Your local library may give you online access to the EBSCO
Auto Repair Reference Center.
There's also just borrowing the book from the library.
Those $10 nameless CDs on eBay seem fishy to me and I don't want to gamble $10 to find out.
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