] Iam going to answer the question-why is my Subaru 33.5cc making a clanging noise at only 1600 miles ? its because the clutch spring was stretched and clutch pads worn out. I called Dave Staton and he said you have to get up to speed pedaling first and not start from a dead stop-not warranteed tho--iam 210 lbs .Just thot id post in case you guys didnt know this.