California
Super Star Member
- Joined
- Jan 22, 2004
- Messages
- 14,935
- Location
- An hour north of San Francisco
- Tractor
- Yanmar YM240 Yanmar YM186D
That's a feature, not a bug!The tractor hesitates after you put it in gear before it starts moving
They are designed that way to accomplish the heavy load of spinning your tiller or shredder up to working rpm before the load of getting the tractor moving is encountered. The pto is a direct gear-to-gear mechanical drive when you engage the clutch, then there is some sort of restrictor valve that is slow to (hydraulically) engage the Powershift's internal clutches as the transmission's internal hydraulic pump comes up to full pressure.
My YM186D works this way, and this gives it pretty near the same usable horsepower as my larger YM240 with gear drive whose pto and wheels start rotating at the same time. I share a 4 ft rotary mower and 54 inch tiller between them. The delay in the Powershift on the little one makes up most of the 5 hp difference when starting mowing uphill for example. This intentional feature is described in the YM186D sales brochure.