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Re: Mowcart 66 break/clutch dosnt work properly and chain...
Loosen adjuster plates where rear axle mounts to frame,they should be elongated slots to allow chain to be adjusted and alig ned,you can also adjust belt under body for clutch/brake function..
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Properly tensioned new chains will require readjustment after a short 'break-in' period as they stretch. Some, improperly tensioned chains have long spots in them and they are difficult to properly adjust. All chains have a difficult life - even properly adjusted - properly lubricated - properly used (not abused). With a proper load (your weight) you should have about 3/4 inch play midway between the front and rear sprocket if your chain is properly adjusted. When properly adjusted and properly tightened, your chain should be checked weekly until you see no difference in the 3/4 inch. After that you should check the adjustment monthly throughout the life of the chain.
Drive and idler pulleys likely are worn and need to be replaced.
You may contact the manufacturer, download manuals, check fuel/oil ratios, order parts, find your local service center, and view other resources using these links:
I recommend contacting your local authorized service center for assistance.
You may contact the manufacturer, download manuals, check fuel/oil ratios, order parts, find your local service center, and view other resources using these links:
Absolutely. The timing chain is kind of like your spinal cord. It keeps everything running in perfect time. It lines up the the cams, valves, and pistons so that each cylinder is in position to recieve spark and create combustion to keep the engine running. It is very possible for for the chain or belt to break or jump a tooth if not properly maintained. Hopefully this did not occur while your engine was running, as this could result in extensive system damage, such as bent valves. You need to have this checked out by a trusted mechanic. If you don't know one, ask around with your friends and co-workers. If your timing chain did indeed break or skip, this needs to be handled by a pro, as this is a very intricate process.
Tools you will need: 1/2 Socket (to remove bar nuts) T25(torq) or you can use a Flathead screw driver but is a little harder.
Remove 2 bar nuts,Clutch cover,bar,chain, 2 screws on black bar handle right behind clutch cover(this is needed because there is a hidden screw there for the chain break) You will need a new chain brake (my guess is that it is part # 530071893 aprox $15) but you will want to verify that with your model number.
You should see the chain break assembly, 3 - T25 screws are visible after the clutch cover is removed(note sometimes you have to clean saw dust to make screw head visible) the other T25 screw is hidden under the black bar handle. Once you remove all 4 screws on the chain brake you will be able to pull it off.
Installing the new one is the tricky part because if it is set(or break is on) you will have a hard time putting it on.One of the easiest ways is to focus on it near the muffler you will see that a metal 3 pronged gear fits into the plastic part of the chain break handle.and if the band is too tight to fit over the clutch drum you will have to carefully reset it by applying pressure onto the area that has the 3 pronged gear and chain break handle make sure that the handle is pushed forward all the way while you apply pressure then slowly pull chain break handle back till you hear a "snap" this resets the chain brake spring and the band should now fit over the clutch drum.Now, proceed with putting back together 4 chain brake assembly screws,2 handle screws,and bar,chain,clutch cover,and 2 bar nuts.
Please note it is important that you apply quite a bit of pressure onto chain break area where metal (3 pronged) gear fits into handle while resetting or when you reset it the metal part can cut into and damage the plastic piece in the chain break handle.
You can see a breakdown here: http://www.searspartsdirect.com/partsdirect/part-model/Poulan-Parts/Chainsaw-Parts/Model-P4018WT/1324/1503220/P0506041/00002?blt=06&prst=0&shdMod=P4018WT
Your chain should not be tight ... only snug. If it keeps throwing the chain, your bar is not on correctly and/or the clutch needs replaced. Do not use old chain with a new clutch.
the flywheel does not have a brake,the clutch side has the break.if you have the chain side cover off the brake is no longer on the clutch drum.the fly wheel is on the oppiset side (starter rewind).take the starter rewind off and see if the motor will turn.if hte motor turns the problem is in the clutch side.if it doesn't the problem is in the flywheel side.the ignition coil has been known to loosen up.the screws streitch out from heat.check the air gap between the flywheel magnets and the ignition coil.should be .10 to .12 inches.if problem is on clutch side check to make sure that the springs are on between the clutch discs.they have been known to break and that does not let the chain spin on bar.any questions get me an e mail
The clutch is a centrifugal mecanism.When you pull the starter cord the chain gear is engajed by the clutch.The clutch has to work properly.Change the 3 clutch with new ones(the old ones are tighten) Hope this helps.
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