njm
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Everything posted by njm
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Crank bearing cage failed ? this is a fault i have seen many times , flywheel strikes coil , engine will feel ok turning by hand but the bearings all bunch up when running causing play in the crank and and flywheel will hit the coil
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You could stick a 20" bar on a 50cc and trim twigs all day long . chain speed in a log is what i need ,
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15" bar on 550xp, saw is used for cutting , 15" is its limit even with a modified autotune
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I tend to use the brake if i am walking but i put it on at idle , seen too many young lads slam it on with revs , the day they need the brake might be the day it fails due to abuse .
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1987 model Husky 254 purchased new 1988 , saw was used in the woods 1988/1989 and now has 25 years of firewood duty on it , the saw has never had the barrel off , new parts fitted are oil pump, clutch and a carb , i doubt if my 550xp will be around that long
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Guess the have run out of copper hammers at the Husky factory ?
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Bearings can only be fitted one way , extension on one side for the crank seal
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Yes you can when you have a bearing with no cage ! bearings are all still intact minus the plastic cage ,
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Just a strip of flattened plastic , no heat damage and still flex in the remains of the cage , old school operators chain break is not abused .
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Always flywheel side i have seen fail , saw stops when the flywheel hits the coil most have scores on transfer ports and exhaust due to running lean , the operators i deal with dont wind the chain up solid which i find is the fashion with training these days , this may explain failed bearings on the clutch side ?
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But the autotune will mask an air leak in the crank case ect ect , this is why most failed motors are scrap , on a carb saw you would pick up the change in the motor at the start of any problem , autotune adjusts the mixture until it can no more and the saw will run to destruction ,
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Read that when it landed on my desk at work ! its 2014 models that i am seeing now with bearing failure
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Have to agree with you about the training these days , so do you think there is a problem in the factory with the way they fit the bearings ?
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Yes its the saws used in the woods that are suffering , cutters are finding it a bit galling as most ran 357 huskys and were used to getting a good year out of the saw before a rebuild
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I was planning to run my next new saw on Aspen , all i do is my own firewood these days , mind you my 1987 254 still runs very well and does not want to retire just yet
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2 of the saws have been run on xp oil by pro cutters with 40 plus years between them so i doubt they made a mistake mixing the fuel , one was run on god knows what oil !! but in saying that i know a guy with a 2012 560xp that runs his saw with pound shop oil and has filled the saw with fuel full of water several times , it still runs like a dream
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A few of the boys i know are now using the 555 after having problems with the 560xp , so far they are happy with them
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3 x 2014 560xp sitting here , one has a failed crank bearing 180 hours, barrel is scrap , second saw crank case is destroyed due to bolts coming loose, again barrel is scrap 162 hours , last one has 124 hours and has had piston damage and scrap barrel, ring retaining pin failed and crank bearings destroyed
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I have a few to rebuild that have been scrapped , i was planning to build a stronger bottom end if possible , my last saw i used as a pro was a 254 in 1989 LOL
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Not that cost effective if you have to do this every 180 hours or so ?
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I have to fit Husky parts as all the saws have been warranty so far , i was just wondering if anyone had done there own saw that was out of warranty , average life span of a 560xp in the forest is about 6 months so i dont see any old ones !!
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Nope they have a plastic cage
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No not the clutch bearing , crankshaft bearing ,they use a plastic cage to support the bearings , i am starting to see these failing on saws with around 200 hours on them , one had 180 hours 12 week old saw
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Starting to get crank bearing failure on these saws , plastic cage giving up causing flywheel to jam on the coil , anyone tried a steel cage bearing in these saws ?
