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Craftsman riding mower Model 917.276882 26HP Kohler engine. Just changed 1 broken pulley and drivebelt. Tractor will mow with belt engaged, but bogs down to a snail's pace when driving up a hill. Cannot tell if there is a belt or engine issue. Changed oil and cleaned air filter. Not sure if it is a PTO problem but pulley seemed fine.

See Ground Drive Assy: Did you replace idler pulleys with Craftsman OEM belt?

No.

mechanic mark said:

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See Ground Drive Assy: Did you replace idler pulleys with Craftsman OEM belt?

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No.

Whenever the drive belt is replace both v-idlers should be replaced. BTW drv belt is 1/2 x 84-1/2.

If engine rpm don't change a lot going up hill then it is the hydro or belt slippage.

StarTech said:

Whenever the drive belt is replace both v-idlers should be replaced. BTW drv belt is 1/2 x 84-1/2.

If engine rpm don't change a lot going up hill then it is the hydro or belt slippage.

Click to expand...

Do you mean the hydro transaxle?