Question about Craftsman 17.5 hp 42 in. Deck Lawn Tractor - CA Model

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No power when drive is engaged

The engine starts and seems to run fine. Service has been regular and fluid levels are fine. Air filter is clean. When transmission is engaged, there is no forward progress for a few minutes until it seems oil heats up. When going forward or reverse, progress is slow and there is absolutely no power. The blades engage appropriately and seem to have power to drive them; just the transmission doesn't want to work.

Ken

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Hi
Check your drive belt and the tensioner pulley that holds tension on the drive belt. Its possible for the tensioner pulley to be sticking and not putting enough pressure on the drive belt causing it to slip.
Grab hold of that tensioner pully and make sure it moves in and out freely against the drive belt.



Posted on Dec 31, 2008

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Why won't the mower move forward or backward even though the engine is running and the blade will engage?


First off, riding mowers do not "go into gear"; nor can they be shifted into or out of gear...nor, as a matter of fact are they "automatic" or do they have "automatic" transmissions. Instead, the so-called hydrostatic "transmission" is nothing more than the sense one gets--encouraged by mfr/seller misdirection (or product ignorance)--that a mower works just like a car...rather than being powered by nothing more than a belt that turns a wee little hydraulic motor, the speed and direction of which is controlled by the foot pedal controlling volume of fluid coursing though it to hydraulically drive the drive wheels.

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Reason 1 (the more likely) is that the manual-mower-push switch on the motor has been engaged to permit the mower to be pushed without the vehicle (drive wheels) being blocked...because the engine is not running, so the fluid cannot flow with the turning of the drive wheels (unless the switch is engaged).

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Now, to disable the manual push mode that allows the drive wheels to rotate for manual pushing, look under the mower at the drive motor. It will be at the end of the belt loop or shaft being driven at the PTO beneath the engine. Now, find some kind of protruding lever big enough to grasp. If it seems "up" push it down; if "down" push it up...just make it go the other way to release. Now, start up and drive the mower normally. But wait! Before you mow, read the below.

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