2004 620 Mule
 

Rear cylinders don't seem to be getting any fuel. Plenty of spark & compression. Valves are adjusted to specs (.025) Runs on front cylinder only. anyone have any suggestions?

New plugs (NGK)
new fuel filter
adjusted valves (.025)
checked spark with spark tester (very good)
oil changed / oil filter
only been running ethanol free gas
1200 hours