The Forestry Forum
General Forestry => Chainsaws => Topic started by: jjmk98k on April 14, 2007, 08:39:44 PM
This morning, I was cutting up a few oak and ash boards when i noticed the saw was trying harder than usual.. the saw had a freshly sharpened chain.... and it looked kinda dry....I did the "oil spatter check" and saw NO oil was coming out....
So I disassembled that side of the saw and found the the oil pump worm gear had stripped ( its plastic)...Hum..... I degreased the oil pump and saw that it turns smoothly....
Cheap enought to get a new part, its only $5, but I want to know why it failed?
ideas?
I repaired an oil pump for a guy once who had been using Husqvarna summer oil in very cold weather.
I was thinking something like that! One day when it was bitter cold I stated it up and cut a few boards... it was about 25 deg F and I still had the thick Husky oil in the tank, not my winter "blend"
Was it the thread on the worm that had stripped or was it the leg that engages the clutch drum?
The legs can wear off either due to a wrongly installed clutch drum or due to constant blipping of the throttle.
The thread can get stripped off due to a mometarily stuck pump pinion, usually from some grit in the oil.
It was the threaded portion that actually turns the pump....
worm gear "pinion" replaced and saw runs fine, $4.58 cost for part...