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how to install a spring clutch on a murray mower
The idler pulley is located just in front of and to the left of the right-side mower pulley. It's mounted on a bracket which has a long spring attached from it to the front of the mower deck. You can see a good diagram of this at www.partsandservice.com/html/Murray/lt/lt42910x92a.html and click on "mower housing". The belt is Murray part # 37X75 which translates to 1/2" wide by 91.25" around. Any larger mower shop would have this or an aftermarket equivilant.
How do I replace starter cord on lawn mower? Remove the engine starter cover or blower housing which contains the starter rope. Check to see if the spring is still good then just rewind the starter rope pulley to re-tension the spring. Insert the replacement rope into pulley as originally routed and let the spring wind the rope back into pulley. Then replace the starter handle. Make sure you keep tension on the starter pulley while the rope is winding.
Hard to explain.. youtube has instructional videos.... daividsfarm has mower repair vids along with other users
HOW TO CHANGE THE CUTTING HEIGHT To change the cutting height, raise or lower the lift lever as follows. 1. Move the lift lever forward to lower the mower housing and back to raise the mower housing. 2. When you ride on a sidewalk or road, move the lift lever to the highest position and move the blade rotation control to the DISENGAGE position.
instructional vids on youtube... remove air filter & you should see a spring
from the factory the speed is set and cannot be changed, unless you disconnect the coil spring. You can latch the spring somewhere on the housing at your desired speed. this speed is determined by the distance away from the idle stop. example, you can reverse the spring to move stiff lower spring up against the idle stop screw. then using a screwdriver turn the idle screw in to achieve your desired speed.
there is a lever associated with the choke. when the engine needs more power the choke moves to the closed position. There is a governor spring attached to the lever. If this spring is shortened the choke will not be able to move back to full open. This is not recommended though. I did it last fall for the last cut of the year. Sparks were flying from the starter housing flywheel and I used two tanks of gas for a very small yard, normally I get by with about 3/4 of a tank. The mower sure was screaming though. This lever can usually be located by looking down between the starter housing and the air filter.
weak spring, dirt, and the gears are plastic and they get chewed up and jam.
One thing I have done is check the spring on the throttle. I had this happen and the spring that holds the throttle in a specific location had come unhooked. I simply held the throttle open, had another person sstart the mower and then reattached the spring to hold the throttle open in the desired position.
The governor spring adjustments
sounds like either a broken recoil spring or a bad clutch