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Talk:Simplex X-L
The instructions for advancing the motor are for the 5-star soundhead. For the 4-star (SH-1000) the flywheel is shrouded and you manually advance the motor by turning a knob. --JesseCrooks (talk) 21:21, 6 May 2020 (PDT)
Add discussion of the evolution of the Simplex XL, Simplex 35, Simplex PR-1014. Pros and cons and differences between models (ex., poor castings on the XLs result in worse oil seepage). Also add discussion of Simplex soundheads. --JesseCrooks (talk) 21:26, 6 May 2020 (PDT)