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A mechanism for bypassing the flow of hydraulic fluid in a hydrostatic transmission comprised of a hydraulic pump and a hydraulic motor in fluid communication through a center section. The mechanism includes a bypass actuator rod that is moved from a first position to a second position to thereby mo

A mechanism for bypassing the flow of hydraulic fluid in a hydrostatic transmission comprised of a hydraulic pump and a hydraulic motor in fluid communication through a center section. The mechanism includes a bypass actuator rod that is moved from a first position to a second position to thereby move a plate into the hydraulic motor to lift the hydraulic motor off of the center section. The bypass actuator rod may has a generally flat surface and an opposite arcuate surface wherein the generally flat surface of the bypass actuator is positioned adjacent to the plate in the first position and the arcuate surface of the bypass actuator engages the plate in the second position. When the bypass actuator rod is in the first position the hydraulic motor is in substantial sealed engagement with the center section. When the bypass actuator rod is in the second position the hydraulic motor is lifted off of the center section and any forces applied to the actuator rod by the lifted hydraulic motor are directed substantially through the axis of the bypass actuator rod.

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A mechanism for bypassing the flow of hydraulic fluid in a hydrostatic transmission comprised of a hydraulic pump and a hydraulic motor in fluid communication through a center section. The mechanism includes a bypass actuator rod that is moved from a first position to a second position to thereby mo

A mechanism for bypassing the flow of hydraulic fluid in a hydrostatic transmission comprised of a hydraulic pump and a hydraulic motor in fluid communication through a center section. The mechanism includes a bypass actuator rod that is moved from a first position to a second position to thereby move a plate into the hydraulic motor to lift the hydraulic motor off of the center section. The bypass actuator rod may has a generally flat surface and an opposite arcuate surface wherein the generally flat surface of the bypass actuator is positioned adjacent to the plate in the first position and the arcuate surface of the bypass actuator engages the plate in the second position. When the bypass actuator rod is in the first position the hydraulic motor is in substantial sealed engagement with the center section. When the bypass actuator rod is in the second position the hydraulic motor is lifted off of the center section and any forces applied to the actuator rod by the lifted hydraulic motor are directed substantially through the axis of the bypass actuator rod. ion piece bearing at one end the guard mounting means, the opposed end of the extension piece being secured to the engagement member. 6. An attachment according to claim 5 wherein the engagement member has the form of a flat plate and the extension piece extends substantially normal to this flat plate. 7. An attachment according to claim 5 wherein the slot in the engagement member is a closed slot completely surrounded by the wall engaging surface. 8. An attachment according to claim 5 wherein the guard member further comprises a side piece attached to the engagement member adjacent the slot therein and extending rearwardly towards the saw body, adjacent a saw blade mounted on the blade attachment means, whereby the side piece acts as a guard for the saw blade. 9. An attachment according to claim 5 wherein the extension piece is provided with biasing means arranged to hold the engagement member in a central position when the engagement member is not in contact with a wall. 10. An attachment according to claim 9 wherein the biasing mean comprises at least two springs disposed on opposed sides of the extension piece. 11. An attachment according to claim 9 wherein the guard mounting means comprises a shaft mounted on the saw body, the extension piece being mounted on the shaft, at least one of the saw body and the extension piece being pivotable relative to the shaft, and where the biasing means are mounted on the shaft. 12. An attachment according to claim 11 wherein the extension piece comprises a pair of spaced flanges, each of which has an aperture extending therethrough, and the shaft passes through these apertures.