Tag: Valves

Ask The Editors: Mojave Timing Blues


Dear ATVC: I have a 1988 Kawasaki Mojave 250. When I set it on timing and try to kick it over, both intake and exhaust valves open when piston is returning to TDC. I’ve got it in a trade so I can’t really tell you the history behind it but all I know is that […] More »

  Comments | By - July 12, 2015

ATV Tech: Illogic in the World of Valves


Sometimes logic has no place in the rough and tumble conditions of a modern ATV engine operating at full tilt. Logic would suggest that as your engine’s valves open and close millions of times, they would slacken up, become loose and sloppy. However, the truth of the matter is that often valve clearances actually become […] More »

  Comments | By - August 28, 2013

ATV Tech: The Mysterious Reed Valve


In this day of four-stroke domination, many riders will never have had the experience of wringing out a high-revving two-stroke quad. This is a shame because two-strokes created a type of power delivery that even the peppiest four has difficulty reproducing. Best of all it managed to do it by weighing less, containing far fewer […] More »

  Comments | By - June 14, 2012

Ask the Editors: My ATV Thinks it’s a Pogo Stick

Dear ATVC: My quad’s rear shock feels really springy- it still seems to be working but the rear of the machine bounces more than I remember over rough terrain. My friend says it means the shock is blown and needs to be rebuilt. I thought a blown shock wouldn’t work at all. Please help. Sadly […] More »

  Comments | By - April 23, 2012