YS624 gear case lubrication? - Snowblower Forum : Snow Blower Forums
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post #1 of 12 Old 12-15-2014, 06:55 AM Thread Starter
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YS624 gear case lubrication?

Hi guys,

New to this forum so here is an introduction;

Got a "Ricky" with a busted engine for free a couple of years ago. The connecting rod had snapped off (seized bearing) and went through the crankcase. The crancase was welded and pretty much evrything inside was replaced including crankshaft, piston, connecting rod, camshaft and all bearings. This now works for my father.

A couple of weeks ago I bought my father-in-law's YS624. He passed away a couple of years ago and my mother-in-law don't use it so I bought it from her.

The YS624 is in very good condition, just doing some routine maintenance to have it ready when we get some snow.

Anybody have a clue about the gear case lubrication? The shop manual says to lube "Inner surfaces of gear case". How?

By the way, if my memory serves me right he bought it new about 10 years ago. When were the last YS624 made? It's steel tank, 4-speed, chute rotation handle upright and 12V electric starter. Sold new locally in Sweden, but all decals are bilingual French/German? Serial # is 7KA-250197

/big_swede

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post #2 of 12 Old 12-16-2014, 06:31 AM
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I have no experience with Yamaha snow blowers but I highly recommend you buy a service manual, it would cover what you mentioned and much more. Good Luck

Snow Removal Apparatus I own:
Ariens ST1530DLE, and good ole arm powered scrapper.
The 15 HP is a new Ducar engine sold
by Princess Auto in Canada.
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post #3 of 12 Old 12-17-2014, 04:14 AM Thread Starter
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No, sad to say the service manual does not explain this. The picture in my post is from the service manual, it just says to lube "Inner surfaces...".

What I did: There is a 6 mm (1/4 inch) hole at the bottom of the gear case wher I can see the large cog wheel. I inserted the tiny nozzle of a tube of grease and while moving the tracks (thus turning the cog wheel) I squeezed in some grease. I guess it's better than nothing..

But I would like to know what Yamaha intended?

/big_swede
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post #4 of 12 Old 12-17-2014, 04:37 AM
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use 80/90 weight gear oil.

Long LIVE THE POWERSHIFT!! MAY IT NEVER RUST IN PEACE!!
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post #5 of 12 Old 12-17-2014, 06:30 AM Thread Starter
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In the worm gear for the auger you use oil, yes.

But the gear case, the enclosed cogwheels underneath that transfers power to the tracks you cant use oil, partly beacuse there is no fill hole, partly because there is a hole at the lowest point, as mentioned in my previous post.

/big_swede
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post #6 of 12 Old 12-17-2014, 06:33 AM
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IN the auger gear box use gear oil.

Long LIVE THE POWERSHIFT!! MAY IT NEVER RUST IN PEACE!!
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post #7 of 12 Old 12-17-2014, 06:40 AM
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more than likely the transmission is sealed from the factory. and does not require checking.

Long LIVE THE POWERSHIFT!! MAY IT NEVER RUST IN PEACE!!
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post #8 of 12 Old 12-17-2014, 08:08 AM
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I had mine for 30 years and never touched the drive gear assembly. Serviced the rest though. I'd be more worried about the axle bearings, they take a beating, also check auger and impeller bearings for excessive play. In my old Yamaha the japanese bearings didn't last very long, once I changed them to high specification sealed bearings life was great. I think the salt at the end of the driveway destroys them prematurely because they're not sealed bearings.


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Last edited by Coby7; 12-17-2014 at 08:13 AM.
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post #9 of 12 Old 12-17-2014, 12:54 PM
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Trans Gear Case Grease Type

Quote:
Originally Posted by big_swede View Post
Hi guys,

New to this forum so here is an introduction;

Got a "Ricky" with a busted engine for free a couple of years ago. The connecting rod had snapped off (seized bearing) and went through the crankcase. The crancase was welded and pretty much evrything inside was replaced including crankshaft, piston, connecting rod, camshaft and all bearings. This now works for my father.

A couple of weeks ago I bought my father-in-law's YS624. He passed away a couple of years ago and my mother-in-law don't use it so I bought it from her.

The YS624 is in very good condition, just doing some routine maintenance to have it ready when we get some snow.

Anybody have a clue about the gear case lubrication? The shop manual says to lube "Inner surfaces of gear case". How?

By the way, if my memory serves me right he bought it new about 10 years ago. When were the last YS624 made? It's steel tank, 4-speed, chute rotation handle upright and 12V electric starter. Sold new locally in Sweden, but all decals are bilingual French/German? Serial # is 7KA-250197



/big_swede



The info I found for amy YS624W is 1st it calls for a lightweight lithium-soap base
grease. But I also found that it states to use YamaLube which is available from Amazon & it states on the container that it's a Mjulti Purpose Grease (MLTPR-GR-00) is the Part #. Also mine has a steel tank no electric start & was masse around 1987/88. You might also try the Yamaha snowblower Forum (Nabble).


DANM
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post #10 of 12 Old 12-17-2014, 12:55 PM
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Yamaha Trans Gear Case Grease Type

The info I found for my YS624W is 1st it calls for a lightweight lithium-soap base
grease. But I also found that it states to use YamaLube which is available from Amazon & it states on the container that it's a Mjulti Purpose Grease (MLTPR-GR-00) is the Part #. Also mine has a steel tank no electric start & was masse around 1987/88. You might also try the Yamaha snowblower Forum (Nabble).


DANM
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