Need help sizing a rotary cutter

[Ranchofla]

I just top mine off too. Changing oil is for engines and precision pumps that suffer from particulate matter in the oil. I've always thought you could keep a mower gearbox happy with any oily substance from fine oil all the way to bacon grease if necessary. I keep mine topped off with 90w but I cannot imagine actually changing it.

Since I bought my rotary cutter used and had no idea how the previous owner ran it or abused it I changed mine once and used a suction pump to pull it out (did not get under it to find a drain plug). Then refilled with 90 weight and have not had an issue, will probably do the same for the finish mower this year as it gets used more.

Rancho

 

[IndyIan]

You change the oil in your mower gearbox??

Well I figured I'd give it a fighting chance, and I forgot to ask if the dealer filled it with something reasonable. With cheap Chinese junk I always read that you should change the fluids to make sure it's got the right stuff in there. It's like a quart and the change helped rustproof the deck....

 

[Apsterbobed]

Just an update for anyone interested. Sold my finish mower on Saturday, picked up a 6' Woods BB72X Wednesday, and mowed 3 to 4 acres today. So far I am very pleased with the cutter. I set it for a 3" cut and went straight to the tallest thickest grass we had and it chewed it right up, the same spot would have bogged the finish mower down easily. Also I ran the finish mower at its highest caster setting, about 5". It's still early but so far I am happy with the cutter and glad I didn't go with the 5' cutter. It seems to be well matched to my tractor as far as weight and size.

 

[C4Ranch]

Looks good. Glad it's workin for u!

 

[IslandTractor]

Just an update for anyone interested. Sold my finish mower on Saturday, picked up a 6' Woods BB72X Wednesday, and mowed 3 to 4 acres today. So far I am very pleased with the cutter. I set it for a 3" cut and went straight to the tallest thickest grass we had and it chewed it right up, the same spot would have bogged the finish mower down easily. Also I ran the finish mower at its highest caster setting, about 5". It's still early but so far I am happy with the cutter and glad I didn't go with the 5' cutter. It seems to be well matched to my tractor as far as weight and size.

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I have the BB60x version on my DK40se. I use it only for thick brush and it does a great job with brush that would strain my flail. Only reason I didn't get the 72 was that I found the barely used 60 on CL. If buying new I'd definitely get the 72.