Chainsaw Repair

Oh I see - I think I do recall you saying you added that impulse port but I misunderstood.  So from the factory the difference between the 62 and 72cc cases is that they used a larger spacing on the cylinder bolt pattern?

The agree the carb is marginally sized for 62cc.  Yet they sell the saws based on the G5000 in displacements up to 62cc as well - and that has a carb based on the WT series which can't get even that big!

I bet your 72cc runs very well with the larger carb.