I've not had anything directly to do with the Rotec heads... because I've always been able to get the air cooled setup to work ok, which is an answer ...

Hi Greg, The table in the back of the overhaul manual tells me that it's hydraulic, with a "2 ring cam" and hollow pushrod rocker oil feed. I don't re...

Hi Bennisv, 4.5 may cause flooding, but on a 2200 it might be ok - they can be a little more tolerant of higher fuel pressure than the 3300, depending...

Hi Steve, Sounds like you might have found the Gremlin, hope it behaves for you! D.

Hi Steve, According to the manual... "Remove the spring clip and detach the bowl from the carburettor. Measure the distance from the fuel surface to t...

Hi, "Specific upgrades" kind of depends on your aims for the engine. If you're happy to tinker, then there's nothing really mandatory in the way of c...

Hi Steve, That screw isn't the most powerful adjustment in the world. If it's not having an effect then the chances are that it's being overridden by...