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There is kick back when trying to start mower. Is the problem in the timing as the belt drive on the main shaft has been damaged

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1st thing it could be is yes the timming key in the flywheel
but most likly this pto has been damaged

2nd thing it could be is a loose blade or cutting disc / bent pto

3 rd thing it could be is excess carbon on piston or bad coil

but check flywheel key 1st

cheers

Posted on Sep 07, 2010

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Posted on Jan 02, 2017

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I have a old lawn keeper edger with a briggs and stratton 2 hp engine. It has always run great but the belt came off and we cant figure out how to get it back on. Can anyone help with that?


If the belt just came off, it should be fairly easy to refit back on its pulleys. Use the largest pulley to assist in pulling the belt on by turning the pulley by hand. If the belt has broken, you may have to remove 1 of the drive shafts to slide the new belt over. I had a B and S powered mower which broke a belt and I had to strip off the end of the mower and unbolt the main drive shaft to slide the belt down. took me about an hour and a half. Glad they don't break too often. Ive heard of others who unbolt the motor and disconnect the clutch drive to fit a new belt. have a good look at the unit to see whats easiest.

Mar 22, 2017 | HP Garden

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Top 10 Lawn Mower Problems and solutions (part 2)


<b><i>Top 10 Lawn Mower Problems and solutions<br /></i></b>(Continued)<br /><b>5: Drive makes a bad noise </b><br />Your mowers drive system making a bad noise rates 5 instead of 4 because more machines come in after the noise has gone and now the machine won't pull. If your machine is making noise in the drive train service it before it is too late. This can save you hundreds of dollars. Lubrication is required on most all drive systems this may be all that your mower needs but checking the belts and wheel alignment never hurts. ask a local shop how to get the service manual for your machine so you know the proper lubricant to use.<br /><br /><b>4: No drive </b><br />So your mower does not drive? Does problem 5 look familiar? If so it may be time for a drive rebuild. The standard rebuild at a shop is about $180. This may be more than half the price you would pay to replace the whole unit. Many shops, like <span>Arcolawn</span> carry used parts for just an occasion. This can help you save money and get the machine fixed up.<br />Before you go through all the work of putting in a new transmission it is a good idea to check the simple things like the belt, the cables and levers and any related components that could be an issue.<br /><img src="barterjoe_4.jpg" /><br /><b>3: Mower vibrates</b><br />Many mowers every year are sent to the repair shop because they make their owners hands go numb. The most common cause is a bent main shaft or "crankshaft". Hitting an object (with the mower) can cause the main shaft to bend and thus throw the mower out of balance. Large machines with multiple blades may be more difficult to notice (look for quality of cut issues). This needs to be addressed by a local shop to evaluate the repair and safety concerns. It is not recommended to straighten the shaft as it may cause fractures in the metal of the shaft. <br />A lesser known cause of vibration is a blade that is out of balance. Silica or dirt causes blades to wear and come out of balance. This vibration can cause parts to come loose and components to fail. Aside from that worn blades are dangerous because they can break apart as they grow thinner.<br />Both a bent/ worn blade and a bent crankshaft can be checked at a local dealer that has a dial gauge. <br /><b>2: Engine is hard to start (kicks back)</b><br />Related to number 3 the engine kicking back when trying to start means 9 times out of 10 that the key under the flywheel has sheared and is making the spark plug fire at the wrong time. This is an inexpensive fix (under $10...not counting your time) if you do it yourself. Other hard to start issues can be related to valve adjustment and fuel delivery both of which it is recommended to consult a repair manual about. (see link above for manuals from dealers) <br /><b>1: Engine is hard to start and surges up and down </b><br />The number one problem is "Surging"<br />The most common of all complaints in engines is relate to fuel. fuel has a shelf life of 60-90 days before it will not burn in a small engine properly. this does not mean that fuel is good after 1 week in the garage with the sealing caps off of the container. <br />10% of the fuel today is Ethanol a corn based alcohol. Alcohol attracts moisture and works as a solvent eating rubber components and corroding metals. Since lawnmower fuel systems are made from metal and rubber gaskets this makes for a bad combination.<br />sometimes flushing your fuel system will fix the problem but other times a rebuild of the system is required.<br />Either way it is recommended to find fuel without Ethanol. <span>Stihl</span> inc. Dealers like <a href="http://www.arcolawn.com/">www.<span>arcolawn</span>.com</a> carry a special formulated fuel that has no ethanol in it. This is one notch better than recycling gallons of fuel every month or two just to keep your lawn equipment going.<br /><br />There you have it the top 10 lawn mower problems and solutions.<br />Thank you <span>Arco</span> Lawn <br /><span>Stihl</span> Inc<br />and other referenced sites.<br /><br /><img src="barterjoe_3.png" />

on Feb 22, 2011 | Garden

2 Answers

Belt falls off every so often. When I put it back on, now it smokes


Two possibilities. The belt is worn out and hence has no tension so you need to buy a new one. The other possibility is that the tension mechanism is jammed up with grass and is not keeping the belt tight. This is a common problem if you do not clean the mower after each time you use it. You will find the grass jams very tightly around the tensioner mechanism and stops it working. If this is the case, give it a clean and it should start working again. You will probably still need to buy a new belt as you have damaged it.

Jun 16, 2016 | Garden

1 Answer

Why won't my Lawnboy model #10604 self-propell go forward?


Its possible that the drive belt is old and stretched. You may need to replace the belt.

May 23, 2014 | Garden

1 Answer

My lawn mower will not move. I can move the gear to drive and reverse without using the clutch.


What the clutch does is take the tension of the main drive belt so that there is no rotational input to the transaxle. So the first thing to check is the main drive belt located up high unde the mower, but if you want you can start with upper pulley under the engine. You may find it easier to access with the deck removed. If the deck belt has not slipped or broken, then you should inspect the linkages from the shifter to the transaxle, including the connection to the transaxle (there is a bolt that holds the linkage engaged to the transaxle). If you still can not find the problem, have the rear wheels been off recently? If so, did you not get the key put back in? If this were the case, you could pull the center caps off and put it in gear and let the clutch out and the shaft would spin inside the wheel hub. At this point if you still have not corrected the issue, then it is time to consider that the problem is internal to the transaxle.

I hope this helps get you on the right road.

Sep 11, 2011 | Craftsman 42 in. Deck 19.5hp Lawn Tractor

2 Answers

Krone AM322 disc mower pto runs disc will not turn


sounds like a broken shaft in the gearbox!

Please rate my help++++Thanks for using FIXYA

May 12, 2010 | Krone Patch panel

1 Answer

Riding Mower Variable Speed Pulley Locked Up. How to remove belts


ya it can be freed up with some W-D40 if you pah the cluch down then try to get the belt off i can get you a new pulley let me know

Oct 15, 2009 | Mtd Garden

2 Answers

My riding mower stopped forward and reverse movement every once in a while..then it stopped completely. the engine is running fine and the throttle parts move when the pedal is pressed


Check the main drive belt. Without knowing your specific model and brand, its hard to be more detailed than that. Almost all riders have a main belt. When you look under your mower, there are usually two belts that come off of the drive shaft of the engine. One drives the mower deck and one drives the transmission for your mower. The way your mower "stopped forward and reverse movement every once in a while" tells me your belt developed a bad spot, then completely let go. Also, many mower companies host a website for their products. You can find your model's owners manuals, parts lists, and diagrams, to help you fix the mower yourself, which I highly recommend, if you are able. Shops in my area charge around $150.00 to $200.00 dollars to change a main belt.

Aug 22, 2009 | Garden

1 Answer

I was riding my wr 250cc


Check the sprockets. Got a stick or rock binding the chain? Remove the chain. Does the wheel spin freely? Brake frozen?

Since your bike is water cooled, a seized piston is not too likely. Got water in the radiator? Most likely is a broken torsion spring on the kick start shaft. The adjacent ratchet wheel and the kick shaft should be inspected. The ratchet wheel should have a smooth movement. If not then replace it. The kick shaft should not show wear or damage. The same is true for the kick gear and idler gear. Replace as needed.

The only other possibilities are a frozen main bearing, (not likely), a broken or severely bent shift fork, (more likely than a main bearing).

Please rate this solution. Thanks!

Apr 11, 2009 | 2004 Yamaha WR 250 F

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