General Resources
bikelinks.com/directory/Technical/
bikelinks.com/directory/Technical/Troubleshooting/
bikelinks.com/directory/Technical/Motorcycle-Maintenance/
Troubleshooting Twostrokes
1) Engine won't start, or difficult to start
Check fuel (quantity, condition, type) Check spark Check compression
- Twostroke Resources
members.tripod.com/Howtuz/smengines.htmlultralightnews.com/enginetroublshooting/start.htm
bikelinks.com/directory/Technical/Two-Strokes/
2-Stroke Articles & Info - macdizzy.com
Stuck Rings
Here is a method I've invented to remove gummed up piston rings on old pistons. This works most of the time for me and I was using it with a can of GT 85 plus a blow torch during the week on an old piston with unobtainium piston rings... All were saved!!
OK firstly inject penetrating oil into the ring gap of the offending piston with gummed up rings.
Next play a blow torch onto the crown lightly and hey presto, the oil boils and pushes the rings out. Works most of the time.
Regards,
Andy
Two-stroke compression
1. In most two strokes 120 + (PSI) is good, tho there are some weird motors that run less.
2. 6.5 - 7.5 to one is pretty typical swept compression (only counting above the exhaust port). 8.5 - 10.5 would be typical uncorrected ratios.
More information: arboristsite.com
Norton Technical Tips
OHV Valves and Guides
Cylinder Head Joint
Flat Tank Gearbox
AMC Clutch
Alloy Head Threads
British Threads
Petrol Tank Painting
Powder Coating
Inter Cam Box Repairs
Rigid and Garden Gate Frame Breakages
Girder Fork Repairs
Wheel Building
Norton OHC Manual
Norton Numbering System
Beadblasting
