My fuel filter had a copper crush washer inside it. I noticed that a new fuel filter I also have came with a small black rubber o-ring. Is either washer acceptable on my OM617 or should I stick to the type that was previously installed?

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Douglas
New York

There were two different style bolts, one uses a washer on top the other doesn't. They both have "O" rings on the shaft. You're going to need a new washer on top. I use a composite gasket from the hardware store, a #30 cap thread gasket.

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83 SD

84 CD

I'm a novice here, so could you spell out the sequence of parts (bolt, copper washer, rubber o-ring) to install? I'm not understanding. Thanks very much.

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Douglas
New York

When you remove the spin on filter, pull up on that bolt to remove. You'll see the washer of course and you'll see the "O" ring/s on the shaft.
It'll be self evident.

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83 SD

84 CD

I've done that. I saw the copper washer, but I didn't see the o-ring, though the new filter I purchased had one taped to the box. This is a silly question, but does the small rubber o-ring go beneath copper washer?

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Douglas
New York

No it does not.
Good for you on getting a filter with that washer, measure it and record for future use.
The "O" ring goes on the bolt, there is a channel machined into it. The same as the channels in the oil canister lid stem.
If your old rubber "O" ring is pliable you can reuse it.

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83 SD

84 CD

Okay, now I see. Thank you for spelling that out for me.

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Douglas
New York