How to Fix a Bar Oiler on a Stihl Chainsaw
The bar and chain on a Stihl chainsaw are lubricated by an automatic oiler, which is regulated by the oil pump. Through normal wear and tear the oiler, delivery hose and pump can get clogged with old oil if not cleaned regularly. The oiler hole on the chainsaw's bar can also get clogged with compacted sawdust and oil, which will block lubrication After every couple of uses it is recommended to check this hole. To fix or replace the bar oiler you need to remove the oil pump. Does this Spark an idea?
Other People Are Reading
Things You'll Need
- Screwdriver
- Wrench
- Small knife
- Leather working gloves
- Engine lubrication
- Lubrication gun
- Brush
- Rag
- Metal wire
- Needle nosed pliers
- Piston stop tool
- Clutch Removal tool
- Star Allen wrench
Instructions
-
Before Removing the Pump
-
1
Loosen the bar tensioner screw. Take off the bar nuts with the wrench. Remove the bar cover, bar and chain.
-
2
Unscrew the oiler's cover plate that's located beside the two metal bar posts. Remove the cover plate and insert the sharp edge into the bar's guide slots. Scrape the thin cracks clean of any compacted sawdust and old oil.
-
-
3
Check the oiler hole on the bar. This pea-sized hole is on the rear of the bar, near where it connects to the guide posts. Clean this out.
-
4
Check the bar's nose sprocket. Spin it with a gloved hand. If it doesn't spin freely lubricate the nose sprocket with engine lubrication. Insert the lubrication gun into the hole near the sprocket's tip. Pump the gun one to two times.
-
5
Drain the oil tank and clean it with a rag and toothbrush. Bend the metal wire until one end is hooked. Pull out the pickup body with the needle nosed pliers. Replace the pickup body, filter and suction hose.
Removing the Oil Pump
-
6
Remove the spark plug wire and spark plug. Insert the piston stop tool into the spark plug hole. Take off the starter cover and turn the flywheel until the piston contacts the stop tool.
-
7
Pop off the clutch cover's retaining C-clip. Remove the washer, sprocket and clutch drum from the crankcase. Unscrew and remove the brake band with the star Allen wrench.
-
8
Turn the worm drive and spring one-quarter turn clockwise and pull off the crankshaft. Remove the oil pump's two mounting screws. Slide the oil pump off its seat and out of the engine. Remove the ring and washer and the oil delivery hose from the bar mounting flange.
-
9
Reinstall the new oil delivery hose. Push the oil delivery hose through the hole in the bar mounting flange. Connect the hose to the oil pump's nipple with the flat-tipped pliers. Set oil pump into place in the engine.
-
10
Tighten screws until they are fully secure. Reinstall clutch assembly, bar, chain and bar cover in reverse order.
-
1
Tips & Warnings
You must replace the oil delivery hose every time you remove the oil pump.
Reinstalling the oil pump improperly can result in serious engine damage.
References
Resources
- Photo Credit cutting with chainsaw image by KtD from Fotolia.com
