As Allen points out below these transmissions are were never intended to be shifted while underway. Rather you pick whatever gear you need for the task before starting in motion. However getting underway in road gear is problematic – especially if you are pulling a wagon or other heavy rolling load. For this it’s MUCH easier on the clutch to get the tractor started in 4th gear, then once under way shift up to 5th. ---- Shifting 4th to 5th takes a bit of practice, but once mastered is easily executed without clashing. Here’s how: Being pick the appropriate spot. You must be on a hard surface - never on soft ground. And you must be either level or heading downhill. (Reason: You gotta able to coast 30 - 40 feet without losing much momentum while executing the following steps…) First get the tractor rolling as fast as it will go in 4th gear. Once underway simultaneously depress the clutch and return the gas lever to idle. As the engine RPM’s fall off, move the gear lever to neutral. The instant the engine RPMs reaches idle, quickly release then depress and hold the clutch pedal (gear lever still in neutral…) Now move the gear lever to 5th. If you’ve done it right you’ll still be rolling and the lever will drop right into it’s notch without a hint of gear clash. Finally release the clutch, reopen the throttle and enjoy the ride. --- Key is to practice a few times – it’s not hard to master. But once you think you’re good at doing a flying road gear shift on an H, try executing a “flying shift into road gear” on a hand-clutched tractor! (It takes an operator with at least 3 arms to execute this one gracefully!)
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