My Snapper will not roll...engine is off. - MyTractorForum.com - The Friendliest Tractor Forum and Best Place for Tractor Information
 
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post #1 of 13 Old 02-17-2017, 01:56 PM Thread Starter
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My Snapper will not roll...engine is off.

I got a RER Snapper, the engine is off yet it will not roll. The drive disc is touching nothing, yet you can spin the disc through the engine hole with your hand and the mower will move in either direction. When you try to roll it forward or backward it's like its locked in gear. I can jack up the rear of the mower and spin the wheels and one turns opposite the other as it should. I'm puzzled!
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post #2 of 13 Old 02-17-2017, 03:16 PM
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Re: My Snapper will not roll...engine is off.

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Originally Posted by tasinga View Post
I got a RER Snapper, the engine is off yet it will not roll. The drive disc is touching nothing, yet you can spin the disc through the engine hole with your hand and the mower will move in either direction. When you try to roll it forward or backward it's like its locked in gear. I can jack up the rear of the mower and spin the wheels and one turns opposite the other as it should. I'm puzzled!
It is definitely locked in gear, Are you able to move the shifter?

John 3:16

You must be the change you wish to see in the world - Mahatma Gandhi

Be sure you put your feet in the right place..... THEN STAND FIRM - Abraham Lincoln
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post #3 of 13 Old 02-17-2017, 03:24 PM Thread Starter
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Re: My Snapper will not roll...engine is off.

Yes, shifter works fine, chain case slides back and forth just like it should.
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post #4 of 13 Old 02-17-2017, 03:39 PM
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Re: My Snapper will not roll...engine is off.

do those have a parking brake on them could be like half way on/set

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post #5 of 13 Old 02-17-2017, 03:39 PM
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Re: My Snapper will not roll...engine is off.

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Yes, shifter works fine, chain case slides back and forth just like it should.
Could possible be broken inside the tranny?

John 3:16

You must be the change you wish to see in the world - Mahatma Gandhi

Be sure you put your feet in the right place..... THEN STAND FIRM - Abraham Lincoln
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post #6 of 13 Old 02-17-2017, 04:40 PM
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Re: My Snapper will not roll...engine is off.

The only thing I can think of is that the brake is applying a little force on the hub of the wheel disc. You may be able to spin it easily by hand but since the transmission set up is geared down so much that it will take quite a bit of force to get the disc to spin from the wheels. Think of it this way. A lot of the old muscle cars with manual transmissions couldn't be push started in first gear because most of them had roughly 4 to 1 gear ratio in the rear end. Most of the cars with that steep of gears just ended up having the rear wheels skidding as soon as you let off the clutch. They would act as if you were holding the emergency brake. But the vehicles with economy in mind can easily be push started in first gear because most of them have a 2.50 to one gear ratio which is easier to overcome than a 4 to 1 gear ratio. You have to remember that you have a machine that travels roughly 5-6 mph at most with the engine spinning at 3600 rpm's. So if there's any pressure holding the disc back, chances are you won't be able to roll the mower.
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post #7 of 13 Old 02-17-2017, 05:21 PM Thread Starter
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Re: My Snapper will not roll...engine is off.

It's a series 3 two pedal machine if that helps anyone. Since the differential works could it be in the chain case?
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post #8 of 13 Old 02-17-2017, 10:43 PM
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Re: My Snapper will not roll...engine is off.

Adjustment between rubber tired driven wheel and metal drive wheel may be too close. It is common with older Snappers that the "Yoke" gets deep notches worn in it and when the mower is pushed forward, the chain case and driven wheel jump up and rub, lock, against the drive wheel even though it is in neutral and driven wheel can be turned by hand. However, they can usually be pushed backwards OK. Watch what happens to chain case when you, or someone pushes the mower forward.

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post #9 of 13 Old 02-17-2017, 11:53 PM
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Re: My Snapper will not roll...engine is off.

It appears that the series 1,2 &3 have a "roll" position on the shift quadrant to the rear of the :neutral/park" position.Has it been operating normally before? might need the shift quadrant might need adjustment.

Last edited by propwash; 02-18-2017 at 12:13 AM.
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post #10 of 13 Old 02-18-2017, 07:52 AM Thread Starter
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Re: My Snapper will not roll...engine is off.

The engine is off so there is no metal disc to rub. The yoke looks almost new and the chain case has been slid over far enough to miss the part of the yoke that locks the drive disc in park. Again, I am puzzled. I think the first thing I'll do is check into the chain case.
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post #11 of 13 Old 02-18-2017, 09:01 AM
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Re: My Snapper will not roll...engine is off.

Engage the clutch then move shifter to the roll position. Once shifter is in the location release the clutch and jiggle the shifter forward & reverse just a little in the roll position; you should be able to feel when you hit the sweet spot as there would be no resistance and it should roll. Just a thought.
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post #12 of 13 Old 02-18-2017, 04:06 PM Thread Starter
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Re: My Snapper will not roll...engine is off.

Remember...the engine is off, as long as the drive disc is not hitting the yoke stop, it matters not where the shiffter or drive disc is located. With that said, I found the problem today. It was the chain case. Both of the ball bearings on the small end were bad, almost locked down. I replaced both and now she rolls. Why it spun off the tires and by hand was odd, must have been a torque thing. Thanks to everyone who responded to my question.
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post #13 of 13 Old 02-18-2017, 07:07 PM
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Re: My Snapper will not roll...engine is off.

My mistake, I took it as engine not running.

Walt Conner
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