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Ask Donald Your Own Question
Donald
Donald, Small Engine Technician
Category: Small Engine
Satisfied Customers: 1869
Experience:  I have 25+ years of experience repairing 2 & 4 cycle engines
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Our sx85 mower would not go into reverse so we took the

Customer Question

Our sx85 mower would not go into reverse so we took the transmission out and it will not go back together. Every time we try to tighten the screws that hold the transmission cover on the gears are too right. What are we doing wrong?
JA: What's the make and model of the mower? And can you guesstimate how old it is?
Customer: Sx85 and about 10 years old
JA: Do you plan on doing the work yourself?
Customer: Yes
JA: Anything else we should know to help you best?
Customer: No
Submitted: 6 months ago.
Category: Small Engine
Expert:  Donald replied 6 months ago.

Hello. Thank you for choosing Just Answer. My name is***** will be happy to assist you.

Expert:  Donald replied 6 months ago.

If you are still in need of assistance, I will be happy to work with you.

Expert:  Donald replied 6 months ago.

Double check the alignment of the gears that make up your differential assembly. This is the area of your transmission that is at fault, many times when this problem occurs. Make sure that your washers on your axles are in the correct position.

Expert:  Donald replied 6 months ago.

When your differential assembly is reassembled correctly, your axles should turn freely, if you turn them, one at a time. If you turn one axle forward, the other axle should spin backwards. We can continue from here. Thanks!

Expert:  Donald replied 6 months ago.

Please take a look at the image below. It shows the internal parts of your transmission.

Expert:  Donald replied 6 months ago.

For now, focus on the gears I have highlighted with the red arrows.