Converting lawn mower to manual throttle?
I have a cheap MTD mower with a 5hp B&S engine. The "automatic"
throttle lost a spring and the plastic piece that appears to control the engine speed (the vertical piece in this pic: http://www.kichline.com/chuck/fixit/...s4hpspring.jpg) is broken so I converted it to a manual throttle cable. I connected the cable to the piece that is connected to the plastic piece in the above pic via a rod with a loop in it. (Hopefully the pic and description make sense). The thing is that if I'm sitting still the cable controls the RPMs as expected but as I move the mower around RPMs fluctuate even if I'm not cutting anything. I except the RPMs to drop when there's a load from cutting but it seems random and will surge and drop. Any thoughts? Is there something else that controls engine speed that I haven't found on this engine? thanks in advance! |
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I hope I explained this ok. |
Converting lawn mower to manual throttle?
stoneattic wrote:
I have a cheap MTD mower with a 5hp B&S engine. The "automatic" throttle lost a spring and the plastic piece that appears to control the engine speed (the vertical piece in this pic: http://www.kichline.com/chuck/fixit/...s4hpspring.jpg) is broken so I converted it to a manual throttle cable. I connected the cable to the piece that is connected to the plastic piece in the above pic via a rod with a loop in it. (Hopefully the pic and description make sense). The thing is that if I'm sitting still the cable controls the RPMs as expected but as I move the mower around RPMs fluctuate even if I'm not cutting anything. I except the RPMs to drop when there's a load from cutting but it seems random and will surge and drop. Any thoughts? Is there something else that controls engine speed that I haven't found on this engine? thanks in advance! It looks to me like the vertical piece is the govenor, that adjusts the throttle according to load. Missing that, the speed will be very unstable. |
Converting lawn mower to manual throttle?
On Tue, 09 Jun 2009 23:06:17 -0400, stoneattic
wrote: I have a cheap MTD mower with a 5hp B&S engine. The "automatic" throttle lost a spring and the plastic piece that appears to control the engine speed (the vertical piece in this pic: http://www.kichline.com/chuck/fixit/...s4hpspring.jpg) is broken so I converted it to a manual throttle cable. I connected the cable to the piece that is connected to the plastic piece in the above pic via a rod with a loop in it. (Hopefully the pic and description make sense). The thing is that if I'm sitting still the cable controls the RPMs as expected but as I move the mower around RPMs fluctuate even if I'm not cutting anything. I except the RPMs to drop when there's a load from cutting but it seems random and will surge and drop. Any thoughts? Is there something else that controls engine speed that I haven't found on this engine? I'm late but you still need the automatic part, even with a manual throttle. They all have it. Otherwise it will stall quicker than you can ajust the throttle. thanks in advance! |
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