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370  Drive Chain Tension


Bri
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Hey guys, the chain tensioner arm is jumping on my 370. the gear is metal and shows no sign of wear. I'm thinking that the chain just needs to be tightened but I can not find the adjustment. Usualy there is a gear that has a slotted mount or in some cases the drive moter assymbly is mounted slotted so that it can be moved and retightened but I can find no such adjustment or referance in the manual. Can anyone please help. How can such a simple thing be so complicated.

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A lot of times the main drive sprocket near the drive motor gets worn down pretty bad and is even missing teeth. This may need replacement. The chain also tends to "stretch" over time becoming sloppy. Stretch in the fact that the pin holes get larger from wear. The chain may need to be replaced.

There is no way to tighten the chain with out actually altering something in the drive system. You can however shorten the the tension spring by cutting it and bending another hook.

Good luck!

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Thanks for thye reply. How crazy is the drive system not haveing a tension adjustment knowing that it is inhearent that the chain stretches. I Tried putting pressure on the tensioner arm to replicate a tighter spring with no luck, so I will take a look a the gear mentioned. Many thanks for your help.

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Yeah, I hear you. The spring is supposed to provide the right amount of tension. That doesn't seem to be the case all the time. How did those sprockets look.

Also, There is a sprocket that you have to split the machine to get to. That one wears down really bad sometimes as well. You can kind of see it if you shine a flash light in the upper right hand slot that the chain is protruding from.

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incredible...such a wounder machine and advancement in techknowledge leaps and bounds from the old analog beast and NO chain tension adjustment, and a  gear mount that you have to SPLIT the machine to replace....WOW. Need to take a closer look at all of the gears that I can access....Thanks for the info. I appreciatet it and it has saved me some time and aggravitation.

Thanks NooB

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