Help with 95 Polaris 250 trail boss

[Vtiller1900]

I have some problems starting my Trail Boss. There is spark at the plug, gas flows through the carb but it will not fire. I have replaced the plug. Any ideas???

[CHOPPERTHEDOG]

Check your compression.

[Vtiller1900]

Thanks Chopper. Any idea what the compression should be. I thought about this but it seems to be OK. The only real way to check I guess would be with a compression tester?