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Bobcat M731 Kohler 14hp engine issues
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<blockquote data-quote="chesterspal" data-source="post: 128598" data-attributes="member: 23493"><p>Bought this Bobcar M731 a few weeks ago. It has a Kohler K321 14hp engine,</p><p></p><p>Fellow said he messed with the (aftermarket) carb because it was running rich. Then, he never got it to run again, so he sold it.</p><p></p><p>The carb was rusted shut, so I replaced with another aftermarket from Amazon. I also found it running rich from the get-go.</p><p></p><p>So far I have also replaced the fuel, oil and air filter, the plug (H10C), points and condensor and added a see-through fuel filter as there was none..</p><p></p><p>There is plenty of compression. It is a bear to move the pullys on by hand and the OEM starter is having a hard time turning it over. I have a new one coming tomorrow.</p><p></p><p>I have the manual for it and I have checked the two lifter gaps (they were fine), the spack plug gap (set to .025), the new points set to .020.</p><p></p><p>To get it to even start, I set the choke to full on and the throttle fully out. Turn the key and push in the throttle and adjust the choke to about half way after it kicks over.</p><p></p><p>Adjusting the idle screw seems to do little but stop the engine at some point. I get no real speed increase to back off from. I own a half dozen bikes so I know what to listen for and I do not get that with this engine.</p><p></p><p>I have cleaned the (new) carb twice so far but it is clean every time I open it.</p><p></p><p>No matter what I have tried after three days I get a fully blackened plug avery time. I cannot seem to get this engine to run leaner no matter what I try. It chokes and stumbles when I even try to give it more fuel.</p><p></p><p>It has the OEM fuel pump on the engine. The metal version with the primer lever underneath. I have tested it and it's fine. Although a lack of gas does not seem to be my issue, here.</p><p></p><p>Suggestions?</p><p></p><p>Thanks for any help you can provide.</p></blockquote><p></p>
[QUOTE="chesterspal, post: 128598, member: 23493"] Bought this Bobcar M731 a few weeks ago. It has a Kohler K321 14hp engine, Fellow said he messed with the (aftermarket) carb because it was running rich. Then, he never got it to run again, so he sold it. The carb was rusted shut, so I replaced with another aftermarket from Amazon. I also found it running rich from the get-go. So far I have also replaced the fuel, oil and air filter, the plug (H10C), points and condensor and added a see-through fuel filter as there was none.. There is plenty of compression. It is a bear to move the pullys on by hand and the OEM starter is having a hard time turning it over. I have a new one coming tomorrow. I have the manual for it and I have checked the two lifter gaps (they were fine), the spack plug gap (set to .025), the new points set to .020. To get it to even start, I set the choke to full on and the throttle fully out. Turn the key and push in the throttle and adjust the choke to about half way after it kicks over. Adjusting the idle screw seems to do little but stop the engine at some point. I get no real speed increase to back off from. I own a half dozen bikes so I know what to listen for and I do not get that with this engine. I have cleaned the (new) carb twice so far but it is clean every time I open it. No matter what I have tried after three days I get a fully blackened plug avery time. I cannot seem to get this engine to run leaner no matter what I try. It chokes and stumbles when I even try to give it more fuel. It has the OEM fuel pump on the engine. The metal version with the primer lever underneath. I have tested it and it's fine. Although a lack of gas does not seem to be my issue, here. Suggestions? Thanks for any help you can provide. [/QUOTE]
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Bobcat M731 Kohler 14hp engine issues
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