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Tool Talk Discussion Forum

chain saw fix advice needed

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bcPA

05-14-2004 06:20:26




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I have a dolmar chain saw with a bar oiler pump that is not working. I checked out a similar makita saw and it pumped oil only when the sprocket was turning. The dolmar will not pump oil at all. I am asumming that there are some teeth or spiral threads on the clutch drum that turn the pump that have broken off or stripped. Has anyone out there torn one of these apart and am I right as to how this works. The saw is a model 114 with a 51cc eng. Thank you.

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guy hansen

09-25-2004 09:49:02




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 Re: chain saw fix advice needed in reply to bcPA, 05-14-2004 06:20:26  
I ha not read the rules, no buying and selling,...and tried to cancell the message sent a moment ago. Please disregard said message. I do not wanr to loose my user rights. Thank you



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Slofr8

05-15-2004 03:07:41




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 Re: chain saw fix advice needed in reply to bcPA, 05-14-2004 06:20:26  
If you have to remove the clutch, here's how we did it. (talking Husky's but should be similar).
We would remove the spark plug and shpve the knoted end of a rope in the cyl. (spare pull cord)
Then with the bar and chain off we would put the spark plug end of the bar wrench on the bolt head holding the clutch on. Tighten it up (reverse threads here) so that the handle of the bar wrench is straight back and level. Then using the saws bar give the wrench handle a sharp rap. May need to repeat a few times.
Whole thing takes about 5 minutes. The oiler gear is behind the sprocket. At least on a husky. Good luck.
Dan.

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bob

05-14-2004 22:08:07




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 Re: chain saw fix advice needed in reply to bcPA, 05-14-2004 06:20:26  
probably the plastic gears have melted. Pulling the clutch is a real trip if you've never done it. The sprocket & drum usually come off easy enough but the clutch is a reverse thread & you will need to lock up the engine to remove it. A $4 special tool that replaces the spark plug will do that, or cram starter rope down the spark plug hole, then pull the starter cord that starts the saw, to lock it up. May take a special tool to remove the clutch also. Then unscrew the screws from the plastic cover & you can see what happened. Parts manual is a big plus.

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JP

05-14-2004 07:09:23




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 Re: chain saw fix advice needed in reply to bcPA, 05-14-2004 06:20:26  
Most new auto oiler saws do run off the clutch drum. A very common thing on saws with that kind of drive is that the gear on the pump will get worn off or the internal oiler will wear out. usually not too expensive to fix. Take off clutch and drum, remove side cover. oiler should be under that. Some do have a little wire hooked to the drum and that is what drives the oiler, look for that also.



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