old man 53 Posted December 29, 2019 Report Share Posted December 29, 2019 Hi I am new to this, Last time I rode a trails bike was 1972, I found a nice old Aprilia 311 in good shape. Just a few questions to start, What fuel mix should I run in the bike? Is there anyplace in the Us that has any parts? I started it on a 50 to 1 mix seemed to run ritch, but everything seemed fine. There is also a engine compression adjustment device on the front of the engine, I have never seen one? Thanks for the help, Mark Quote Link to comment Share on other sites More sharing options...
b40rt Posted December 29, 2019 Report Share Posted December 29, 2019 Rotax engine, 50:1 semi synthetic. They do collect oil and need cleaned out. Interested to see a picture of the compression device. Quote Link to comment Share on other sites More sharing options...
section swept Posted December 29, 2019 Report Share Posted December 29, 2019 17 hours ago, old man 53 said: Hi I am new to this, Last time I rode a trails bike was 1972, I found a nice old Aprilia 311 in good shape. Just a few questions to start, What fuel mix should I run in the bike? Is there anyplace in the Us that has any parts? I started it on a 50 to 1 mix seemed to run ritch, but everything seemed fine. There is also a engine compression adjustment device on the front of the engine, I have never seen one? Thanks for the help, Mark Do you mean decompressor? Quote Link to comment Share on other sites More sharing options...
old man 53 Posted December 30, 2019 Author Report Share Posted December 30, 2019 Yes, I think that's what it says, nob to raise and lower compression, How should I use it. thanks Mark Quote Link to comment Share on other sites More sharing options...
b40rt Posted December 30, 2019 Report Share Posted December 30, 2019 10 hours ago, old man 53 said: it says, nob to raise and lower compression, How should I use it. thanks Mark Think your on the wrong forum ....... 1 Quote Link to comment Share on other sites More sharing options...
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