My 671RR runs well in reverse but in forward it hesitates and runs jerky. I took it apart and everything looks OK, wheels turn freely, e-unit looks OK. What should I be looking for? Can anyone help me on this, I'd like to get it running in time for Christmas day. Thanks.
Bruce
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I got it running just a simple squirt of tuner on the e-unit and it loosened it up and away she went. Merry Christmas everyone.
My 671RR runs well in reverse but in forward it hesitates and runs jerky. I took it apart and everything looks OK, wheels turn freely, e-unit looks OK. What should I be looking for? Can anyone help me on this, I'd like to get it running in time for Christmas day. Thanks.
Bruce
Bruce,
Your venerable 671rr is probably in need of some basic servicing. The brushes may need to be replaced and/or the springs need to be replaced. While you have the engine apart it would also be a good idea to clean and shine up the commutator with an eraser and some solvent. Also clean out the notches in the commutator with a tooth pick, straight pin or a thin sewing needle. In most cases for a post war engine running better in one direction than another the above steps should do the trick. If not then I would take a look at the e unit and at the very least give the E unit plunger a bath in solvent. Hope this helps.
OKHIKER, thanks for the reply, I did give the plunger a shot of tuner and that seemed to do it. I had cleaned it up and relubed it not that long ago so I was sort of stumped and panicked as I wanted to run it on Christmas Day. Its chugging along just fine now. I guess it just needs to be run every once in awhile and not sit on the shelf.
Bruce
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