My B414 has an engine problem. I was moving logs around in the yard.
After working for about 10 minutes after re-fueling, the engine began to race. I pulled the fuel stop and throttled down, but the engine continued to run. I finally put the tractor in neutral and lifted the hood to access the injector pump. I confirmed that the linkages from the throttle and the fuel stop were still connected.
At this point the engine finally stopped. I checked the fuel control linkages more closely, and then tried to restart. No joy. The engine at first seemed to be seized. The starter could not budge the engine.
I discovered that I could use a wrench on the front pulley on the crankshaft to tun the crankshaft back, but only 180 degrees, and no further. The starter was then able to move the engine, but only 180 degreees, no more.
I removed the rocker cover to observe the valve train as the crankshaft turns. There is no noticable movement of the rockers at all.
From the parts breakdowns on the engine the linkage between the camshaft and the crankshaft is neither timing chain, nor timing belt, but gear drive.
I expect that the no-start problem is that the timing gear train to the camshaft is broken. As a result of this, the crankshaft can only turn until a piston meets an open valve.
Does anyone have experience with this?
After working for about 10 minutes after re-fueling, the engine began to race. I pulled the fuel stop and throttled down, but the engine continued to run. I finally put the tractor in neutral and lifted the hood to access the injector pump. I confirmed that the linkages from the throttle and the fuel stop were still connected.
At this point the engine finally stopped. I checked the fuel control linkages more closely, and then tried to restart. No joy. The engine at first seemed to be seized. The starter could not budge the engine.
I discovered that I could use a wrench on the front pulley on the crankshaft to tun the crankshaft back, but only 180 degrees, and no further. The starter was then able to move the engine, but only 180 degreees, no more.
I removed the rocker cover to observe the valve train as the crankshaft turns. There is no noticable movement of the rockers at all.
From the parts breakdowns on the engine the linkage between the camshaft and the crankshaft is neither timing chain, nor timing belt, but gear drive.
I expect that the no-start problem is that the timing gear train to the camshaft is broken. As a result of this, the crankshaft can only turn until a piston meets an open valve.
Does anyone have experience with this?