Amazing

[Phototone]

It's amazing what new reed, and new oil seals will do to perk-up a Duraforce engine. Starts on first pull every time now.

 

[Two-Stroke]

It's true of any two-cycle engine. The crankcase must be well sealed or the fuel/air mixture won't be transported efficiently to the combustion chamber.

This is elementary for anybody who has worked on these for a while... The piston's down stroke compresses fuel/air that's in the crankcase and, at the right moment, the fuel/air rushes up into the combustion chamber.

 

[impalass]

It's amazing what new reed, and new oil seals will do to perk-up a Duraforce engine. Starts on first pull every time now.

You can start a cold lawn boy engine with the bottom seal missing but it will not start when hot.