Service & Maintenance Question
I have a Husqvarna model 42 chainsaw. It is serial number...escalated
Service & Maintenance Question posted May 11, 2014 by Allen Glover
181 Views, 3 Comments
Question:
I have a Husqvarna model 42 chainsaw. It is serial number 9440485. It has an 18 inch bar. I inherited the saw and it needs a new bar.
Question is what bar does it take, or more specifically what chain size. I have a suspicion that the bar is incorrect. Existing bar is 18" .058" drive width .325" drive length and 72 drive teeth. Dealer sold me a bar that is the same but a .050" width. Funny thing about the saw it came with a .050, .058, and .063" chain--the .050 was in the .058 bar so it was shot.
What was it supposed to have--having a hard time finding information on this model.
Thanks,
raglover
Question is what bar does it take, or more specifically what chain size. I have a suspicion that the bar is incorrect. Existing bar is 18" .058" drive width .325" drive length and 72 drive teeth. Dealer sold me a bar that is the same but a .050" width. Funny thing about the saw it came with a .050, .058, and .063" chain--the .050 was in the .058 bar so it was shot.
What was it supposed to have--having a hard time finding information on this model.
Thanks,
raglover
Answer
1994 Model
Mixing different gauges will only cause you problems.
The .050 gauge bar is perfectly fine to use as long you run a .050 gauge chain in it. The chain and bar gauges must match or there binding or loose fitting. The bar gauge is width of the groove the the chain sits in. Also as gauge increase so the stiffness of the bar. The saw could had either one of the different gauges but not all three at once.
An existing .058 would require a .058 gauge chain and if you had a .050 in it will be loose in the .058 gauge bar and will appear worn out. If the cutters were still good condition and the chain had not worn longer than the adjustment then all you needed was the correct bar or just new .058 chain for the old bar.
Currently Oregon (after supplier) only makes the .050 and .058 gauge bars with the K095 mount.
One extra thing this saw came with either .325 spur drum or a .325 rim drive system and either one is fine to use.
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Thank you for correcting the year. I will go back with the .050 and matching chain. The saw has the sprocket drive. Thank you for the.325 pitch confirmation. Is there a way to measure that on the sprocket? Just trying to educate myself a little more
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In your case the year is the first digits of the serial. Newer saws have have the full four number year as part of the serial.
There is a way to measure but I haven't actually got down to doing so as most times knowing the following is all the is needed. The .325 sprocket should be a 7 tooth and 3/8 (.375) sprocket a 6 tooth. These are what I normally run into but their are exceptions to this on the older saws of different manufactures. One the reason it is always best to least look at the IPL's and sometimes it even takes actually looking at the sprocket clutch drum.
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