Owners manual for a 79 sportster - 1979 Harley Davidson XLH 1000 Sportster

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Wish to get the user manual to this set? Visit this site to download it in PDF. Philips 43PP8421 79 user manual English Pdf file 946 Kb Owner User manual
Gopakumar Gopalan Google

Try this, I do not know if they would have anything that far back but at least it will be a start in your search.
HD service manuals at http://www.downloadninjas.info/service-manuals/harley-davidson-sportster-xl-xlh-service-repair-manual-for-1986-2003-models/

Follow the steps in the manual if you have a manual and if you don't have one I recommend that you get one.

No, the '79 model XLH did not have an oil filter.

Good Luck
Steve

Depends on which spark plugs you're running and the year model of your Sportster. Please provide this information and I can help you.
Usually, a '79 XLH running H-D #4 plugs the gap is 0.060". Later models run 0.038" to 0.043".

http://www.daslas.com/sportster/Wiring.pdf