In uk.d-i-y Tim+ wrote:

You may well find repair uneconomic.
Benefits of having 4T engine instead of 2T (anti-pollution measure).

Where would these valve guides be in a two-stroke engine? Power to weight
ratio probably rules out four-stroke engines for strimmers although I'd be
happy to be proved wrong.

I have a relatively cheap Ryobi 4 stroke strimmer, same weight as the
2 stroke it replaced and *much* better in many ways. In particular
it's dead asy to start whether cold, warm or hot. The only complaint
I have is that the 'dipstick' really isn't very clever.

--
Chris Green
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